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Artículos de revistas sobre el tema "Double electron transfer (DET)"

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Publicado: 25 de mayo de 2024
Última modificación: 31 de julio de 2025

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1

Mukerjee, Sanjeev, Benjamin William Kaufold, Parisa Nematollahi, et al. "(Invited) Fundamentals of Plasmon-Induced Charge Transfer in Semiconducting Materials: Showcasing OER Catalysis." ECS Meeting Abstracts MA2024-01, no. 35 (2024): 1956. http://dx.doi.org/10.1149/ma2024-01351956mtgabs.

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Using Localized Surface Plasmon Resonance Effect for Enhancing Electrochemical reactions has been reported earlier both in terms of direct electron injection/transfer (DET) in outer-sphere reductive processes as well as charge injection into semiconductors via plasmon-induced resonant electron transfer processes (PIRE). While the former (DET) is mainly influenced by the lifetimes of the ejected hot electrons and their rapid cooling at the interface. For inner sphere reductive processes via the LSPR phenomenon, direct charge injection into the LUMO states of the adsorbed species is required. In
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2

Mukerjee, Sanjeev, Benjamin William Kaufold, Sijia Dong, Parisa Nematollahi, Bernardo Barbiellini, and Dirk Lamoen. "(Invited) Plasmonic Enhancement of Electrochemical Reactions Using LSPR Phenomenon." ECS Meeting Abstracts MA2023-01, no. 30 (2023): 1798. http://dx.doi.org/10.1149/ma2023-01301798mtgabs.

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Using Localized Surface Plasmon Resonance Effect for Enhancing Electrochemical reactions has been reported earlier both in terms of direct electron injection/transfer (DET) in outer-sphere reductive processes as well as charge injection into semiconductors via plasmon-induced resonant electron transfer processes (PIRE). While the former (DET) is mostly influenced by the lifetimes of the ejected hot electrons and their rapid cooling at the interface. For inner sphere reductive processes via the LSPR phenomenon, direct charge injection into the LUMO states of the adsorbed species is required. In
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3

Meyer, Gerald J. "(Invited) Reorganization Energies for Interfacial Electron Transfer and PCET in the Electric Double Layer." ECS Meeting Abstracts MA2025-01, no. 53 (2025): 2616. https://doi.org/10.1149/ma2025-01532616mtgabs.

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The reorganization energy (λ) for light initiated interfacial electron transfer (ET) and proton-coupled electron transfer (PCET) from a transparent conducting oxide to molecular acceptors has been quantified as a function of the thermodynamic driving force (-ΔGo ) and analyzed by Marcus-Gerischer theory [1]. The tin-doped indium oxide (ITO) utilized has a significantly high dopant concentration to raise the Fermi level, EF, into the conduction band providing metallic like properties while enabling time resolved spectroscopic characterization in a transmission mode. In this presentation molecul
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4

Xiao, Yuchen, Shanyue Wei, Xiaowei Wu, and Canzhong Lu. "Two-Dimensional Covalent Organic Frameworks with Carbazole-Embedded Frameworks Facilitate Photocatalytic and Electrocatalytic Processes." Molecules 29, no. 21 (2024): 5071. http://dx.doi.org/10.3390/molecules29215071.

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Catalytic technologies are pivotal in enhancing energy efficiency, promoting clean energy production, and reducing energy consumption in the chemical industry. The pursuit of novel catalysts for renewable energy is a long-term goal for researchers. In this work, we synthesized three two-dimensional covalent organic frameworks (COFs) featuring electron-rich carbazole-based architectures and evaluated their catalytic performance in photocatalytic organic reactions and electrocatalytic oxygen reduction reactions (ORRs). Pyrene-functionalized COF, termed as FCTD-TAPy, demonstrated excellent photoc
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5

Chen, Ling, Yue Lu, Manman Duanmu, et al. "Stably Improving the Catalytic Activity of Oxygen Evolution Reactions via Two-Dimensional Graphene Oxide-Incorporated NiFe-Layered Double Hydroxides." Catalysts 14, no. 4 (2024): 278. http://dx.doi.org/10.3390/catal14040278.

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NiFe-layered double hydroxides (NiFe-LDH) have been reported to possess exceptional oxygen evolution reaction (OER) activity. However, maintaining the stability of high activity over a long time remains a critical challenge that needs to be addressed for their practical application. Here, we report a custom-sized deep recombination of 2D graphene oxide with NiFe-LDH (NiFe-LDH/GO/NF) through a simple electrodeposition method that improves OER activity and achieves excellent stability. The excellent performance of the catalyst mainly comes from the three-phase interface and electron transport ch
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6

Wu, Hsing-Ju, and Cheng-Chung Chang. "Fabrication of Double Emission Enhancement Fluorescent Nanoparticles with Combined PET and AIEE Effects." Molecules 25, no. 23 (2020): 5732. http://dx.doi.org/10.3390/molecules25235732.

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The major challenge in the fabrication of fluorescent silica nanoparticles (FSNs) based on dye-doped silica nanoparticles (DDSNs) is aggregation-caused fluorescence quenching. Here, we constructed an FSN based on a double emission enhancement (DEE) platform. A thio-reactive fluorescence turn-on molecule, N-butyl-4-(4-maleimidostyryl)-1,8-naphthalimide (CS), was bound to a silane coupling agent, (3-mercaptopropyl)-trimethoxysilane (MPTMS), and the product N-butyl-4-(3-(trimethoxysilyl-propylthio)styryl)-1,8-naphthalimide (CSP) was further used to fabricate a core–shell nanoparticle through the
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7

Wang, Ze, Qianyu Zhou, Yanni Zhu, et al. "NiFeMn-Layered Double Hydroxides Linked by Graphene as High-Performance Electrocatalysts for Oxygen Evolution Reaction." Nanomaterials 12, no. 13 (2022): 2200. http://dx.doi.org/10.3390/nano12132200.

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Currently, precious metal group materials are known as the efficient and widely used oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) catalysts. The exorbitant prices and scarcity of the precious metals have stimulated scale exploration of alternative non-precious metal catalysts with low-cost and high performance. Layered double hydroxides (LDHs) are a promising precursor to prepare cost-effective and high-performance catalysts because they possess abundant micropores and nitrogen self-doping after pyrolysis, which can accelerate the electron transfer and serve as active
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8

Zhang, Zhichao, Jiahao Guo, Yuhan Sun, et al. "Sulfur-Doped Nickel–Iron LDH@Cu Core–Shell Nanoarrays on Copper Mesh as High-Performance Electrocatalysts for Oxygen Evolution Reaction." Journal of Composites Science 7, no. 12 (2023): 486. http://dx.doi.org/10.3390/jcs7120486.

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The oxygen evolution reaction (OER) is a slow step in electrocatalytic water splitting. NiFe layered double hydroxides (LDH) have shown promise as affordable OER electrocatalysts, but their performance is hindered by poor charge transfer and sluggish kinetics. To address this, we doped NiFe LDH with sulfur (S) using an in situ electrodeposition method. By growing S-doped NiFe LDH on Cu nanoarrays, we created core–shell structures that improved both the thermodynamics and kinetics of OER. The resulting S-NiFe LDH@Cu core–shell nanoarrays exhibited enhanced activity in water oxidation, with a lo
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9

Chen, Zhuo, Qiang Qu, Xinsheng Li, Katam Srinivas, Yuanfu Chen, and Mingqiang Zhu. "Room-Temperature Synthesis of Carbon-Nanotube-Interconnected Amorphous NiFe-Layered Double Hydroxides for Boosting Oxygen Evolution Reaction." Molecules 28, no. 21 (2023): 7289. http://dx.doi.org/10.3390/molecules28217289.

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The oxygen evolution reaction (OER) is a key half-reaction in electrocatalytic water splitting. Large-scale water electrolysis is hampered by commercial noble-metal-based OER electrocatalysts owing to their high cost. To address these issues, we present a facile, one-pot, room-temperature co-precipitation approach to quickly synthesize carbon-nanotube-interconnected amorphous NiFe-layered double hydroxides (NiFe-LDH@CNT) as cost-effective, efficient, and stable OER electrocatalysts. The hybrid catalyst NiFe-LDH@CNT delivered outstanding OER activity with a low onset overpotential of 255 mV and
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10

Wiedemeier, Allison M. D., Jan E. Judy-March, Charles H. Hocart, Geoffrey O. Wasteneys, Richard E. Williamson, and Tobias I. Baskin. "Mutant alleles of Arabidopsis RADIALLY SWOLLEN 4 and 7 reduce growth anisotropy without altering the transverse orientation of cortical microtubules or cellulose microfibrils." Development 129, no. 20 (2002): 4821–30. http://dx.doi.org/10.1242/dev.129.20.4821.

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The anisotropic growth of plant cells depends on cell walls having anisotropic mechanical properties, which are hypothesized to arise from aligned cellulose microfibrils. To test this hypothesis and to identify genes involved in controlling plant shape, we isolated mutants in Arabidopsis thaliana in which the degree of anisotropic expansion of the root is reduced. We report here the characterization of mutants at two new loci, RADIALLY SWOLLEN 4 (RSW4) and RSW7. The radial swelling phenotype is temperature sensitive, being moderate (rsw7) or negligible (rsw4) at the permissive temperature, 19°
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11

Solangi, Muhammad Yameen, Abdul Hanan Samo, Abdul Jaleel Laghari, Umair Aftab, Muhammad Ishaque Abro, and Muhammad Imran Irfan. "MnO2@Co3O4 nanocomposite based electrocatalyst for effective oxygen evolution reaction." Sukkur IBA Journal of Emerging Technologies 5, no. 1 (2022): 32–40. http://dx.doi.org/10.30537/sjet.v5i1.958.

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For large-scale energy applications, conceiving low-cost and simple earth-abundant electrocatalysts are more difficult. By using an aqueous chemical technique, MnO2 was added into Co3O4 with varying concentrations to prepare MnO2@Co3O4 nanocomposite (CM). In an aqueous solution of 1 M KOH, the electrocatalyst with a greater concentration of MnO2 outperforms in terms of OER. To confirm the composition, crystalline structure, and morphology of the electrocatalyst, analytical methods such as X-ray diffraction (XRD) techniques, Fourier transformed infrared spectroscopy (FTIR) and scanning electron
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12

Adachi, Taiki, Yuki Kitazumi, Osamu Shirai, and Kenji Kano. "Direct Electron Transfer-Type Bioelectrocatalysis of Redox Enzymes at Nanostructured Electrodes." Catalysts 10, no. 2 (2020): 236. http://dx.doi.org/10.3390/catal10020236.

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Direct electron transfer (DET)-type bioelectrocatalysis, which couples the electrode reactions and catalytic functions of redox enzymes without any redox mediator, is one of the most intriguing subjects that has been studied over the past few decades in the field of bioelectrochemistry. In order to realize the DET-type bioelectrocatalysis and improve the performance, nanostructures of the electrode surface have to be carefully tuned for each enzyme. In addition, enzymes can also be tuned by the protein engineering approach for the DET-type reaction. This review summarizes the recent progresses
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13

Ratautas, Dalius, and Marius Dagys. "Nanocatalysts Containing Direct Electron Transfer-Capable Oxidoreductases: Recent Advances and Applications." Catalysts 10, no. 1 (2019): 9. http://dx.doi.org/10.3390/catal10010009.

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Direct electron transfer (DET)-capable oxidoreductases are enzymes that have the ability to transfer/receive electrons directly to/from solid surfaces or nanomaterials, bypassing the need for an additional electron mediator. More than 100 enzymes are known to be capable of working in DET conditions; however, to this day, DET-capable enzymes have been mainly used in designing biofuel cells and biosensors. The rapid advance in (semi) conductive nanomaterial development provided new possibilities to create enzyme-nanoparticle catalysts utilizing properties of DET-capable enzymes and demonstrating
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14

Schachinger, Franziska, Hucheng Chang, Stefan Scheiblbrandner, and Roland Ludwig. "Amperometric Biosensors Based on Direct Electron Transfer Enzymes." Molecules 26, no. 15 (2021): 4525. http://dx.doi.org/10.3390/molecules26154525.

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The accurate determination of analyte concentrations with selective, fast, and robust methods is the key for process control, product analysis, environmental compliance, and medical applications. Enzyme-based biosensors meet these requirements to a high degree and can be operated with simple, cost efficient, and easy to use devices. This review focuses on enzymes capable of direct electron transfer (DET) to electrodes and also the electrode materials which can enable or enhance the DET type bioelectrocatalysis. It presents amperometric biosensors for the quantification of important medical, te
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15

Kwek, Lee Koon, Seyed Ehsan Saffari, Heng Hao Tan, Jerry KY Chan, and Sadhana Nadarajah. "Comparison between Single and Double Cleavage-Stage Embryo Transfers, Single and Double Blastocyst Transfers in a South East Asian In Vitro Fertilisation Centre." Annals of the Academy of Medicine, Singapore 47, no. 11 (2018): 451–54. http://dx.doi.org/10.47102/annals-acadmedsg.v47n11p451.

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Introduction: This study investigated the differences in clinical pregnancy rate (CPR), live birth rate (LBR) and multiple pregnancy rate (MPR) between double cleavage-stage embryo transfers compared to single and double blastocysts stage embryo transfers in a single academic medical centre. Materials and Methods: This was a retrospective cohort study performed at the KK Women’s and Children’s Hospital In Vitro Fertilisation (KKIVF) Centre of all women who underwent fresh-cycle in vitro fertilisation/intracytoplasmic sperm injection (IVF/ICSI) cycles over a 5-year period. The outcome measures
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16

Yanase, Takumi, Junko Okuda-Shimazaki, Ryutaro Asano, Kazunori Ikebukuro, Koji Sode, and Wakako Tsugawa. "Development of a Versatile Method to Construct Direct Electron Transfer-Type Enzyme Complexes Employing SpyCatcher/SpyTag System." International Journal of Molecular Sciences 24, no. 3 (2023): 1837. http://dx.doi.org/10.3390/ijms24031837.

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The electrochemical enzyme sensors based on direct electron transfer (DET)-type oxidoreductase-based enzymes are ideal for continuous and in vivo monitoring. However, the number and types of DET-type oxidoreductases are limited. The aim of this research is the development of a versatile method to create a DET-type oxidoreductase complex based on the SpyCatcher/SpyTag technique by preparing SpyCatcher-fused heme c and SpyTag-fused non-DET-type oxidoreductases, and by the in vitro formation of DET-type oxidoreductase complexes. A heme c containing an electron transfer protein derived from Rhizob
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17

Sitler, Collin, Michael Lustik, Gary Levy, and Bruce Pier. "Single Embryo Transfer Versus Double Embryo Transfer: A Cost-Effectiveness Analysis in a Non-IVF Insurance Mandated System." Military Medicine 185, no. 9-10 (2020): e1700-e1705. http://dx.doi.org/10.1093/milmed/usaa119.

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ABSTRACT Introduction Because of increased morbidity seen in multiple gestations, the American Society of Reproductive Medicine recommends transfer of blastocysts one at a time for most patients. While cost-effectiveness models have compared single embryo transfer (SET) versus double embryo transfer (DET), few incorporate maternal and neonatal morbidity, and none have been performed in U.S. Military facilities. The purpose of this study was to determine the cost effectiveness of sequential SET versus DET in a U.S. Military treatment facility. Materials and Methods A cost-effectiveness model wa
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18

Poimenidis, Ioannis, Nikandra Papakosta, Panagiotis A. Loukakos, George E. Marnellos, and Michalis Konsolakis. "Highly Efficient Cobalt Sulfide Heterostructures Fabricated on Nickel Foam Electrodes for Oxygen Evolution Reaction in Alkaline Water Electrolysis Cells." Surfaces 6, no. 4 (2023): 493–508. http://dx.doi.org/10.3390/surfaces6040033.

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Non-noble metal electrocatalysts for the oxygen evolution reaction (OER) have recently gained particular attention. In the present work, a facile one-step electrodeposition method is applied in situ to synthesize cobalt sulfide nanostructures on nickel foam (NF) electrodes. For the first time, a systematic study is carried out on the impact of the Co/S molar ratio on the structural, morphological, and electrochemical characteristics of Ni-based OER electrodes by employing Co(NO3)2·6 H2O and CH4N2S as Co and S precursors, respectively. The optimum performance was obtained for an equimolar Co:S
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19

Thanh, Tran Ha Lan, Pham Hoang Huy, Do Thi Linh, et al. "Effectiveness of elective single versus double frozen embryo transfer in good prognosis IVF patients." Biomedical Research and Therapy 8, no. 1 (2021): 4203–13. http://dx.doi.org/10.15419/bmrat.v8i1.658.

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Objective: This study aimed to evaluate the effectiveness of elective single embryo transfer (eSET) versus double embryo transfer (DET) in frozen embryo transfer cycles following in vitro fertilization (IVF) treatment in good prognosis patients. The outcome would provide medical data for the multiple pregnancy rate reduction in IVF treatment.
 Methods: This multicenter retrospective cohort study was performed in patients undergoing the first frozen embryo transfer (FET) cycles at IVF centers which belonged to the IVFMD Group, Vietnam, from January 2018 to May 2020. Patients were divided i
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20

Inukai, Niina, Eiichiro Takamura, Hiroaki Sakamoto, Takenori Satomura, and Shinichiro Suye. "Construction of a Novel Stable Electron Transfer Protein for the Creation of Artificial Direct Electron Transfer Enzymes." ECS Meeting Abstracts MA2024-02, no. 67 (2024): 4723. https://doi.org/10.1149/ma2024-02674723mtgabs.

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Abstract In recent years, wearable sensors aiming to enable continuous measurement for disease prevention and diagnosis have been the focus of much research. Wearable sensors are often used inside the user's body or on biological surfaces. To reduce the burden on the user, these devices must be safe and compact. Lithium has been used as the conventional power source, but lithium batteries are not biocompatible and are not safe. Therefore, biofuel cells (BFCs) that use enzymes as electrodes are expected as a power source. In conventional BFCs, mediated electron transfer (MET) -type enzymes, in
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21

Xia, Hongqi, and Jiwu Zeng. "Rational Surface Modification of Carbon Nanomaterials for Improved Direct Electron Transfer-Type Bioelectrocatalysis of Redox Enzymes." Catalysts 10, no. 12 (2020): 1447. http://dx.doi.org/10.3390/catal10121447.

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Interfacial electron transfer between redox enzymes and electrodes is a key step for enzymatic bioelectrocatalysis in various bioelectrochemical devices. Although the use of carbon nanomaterials enables an increasing number of redox enzymes to carry out bioelectrocatalysis involving direct electron transfer (DET), the role of carbon nanomaterials in interfacial electron transfer remains unclear. Based on the recent progress reported in the literature, in this mini review, the significance of carbon nanomaterials on DET-type bioelectrocatalysis is discussed. Strategies for the oriented immobili
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22

Rao, Jinpeng, Feng Qiu, Shen Tian, et al. "Clinical outcomes for Day 3 double cleavage-stage embryo transfers versus Day 5 or 6 single blastocyst transfer in frozen–thawed cycles: a retrospective comparative analysis." Journal of International Medical Research 49, no. 12 (2021): 030006052110624. http://dx.doi.org/10.1177/03000605211062461.

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Objective This study aimed to compare the clinical outcomes for transfer of Day 3 (D3) double cleavage-stage embryos and Day 5/6 (D5/6) single blastocysts in the frozen embryo transfer (FET) cycle to formulate a more appropriate embryo transplantation strategy. Methods We retrospectively analyzed 609 FET cycles from 518 women from April 2017 to March 2021. All FETs were assigned to the D3-DET group (transfer of a Day 3 double cleavage-stage embryo), D5-SBT group (transfer of a Day 5 single blastocyst), or D6-SBT group (transfer of a Day 6 single blastocyst). Clinical outcomes were comparativel
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23

Alves, Daniele, Eithne Dempsey, and Carmel B. Breslin. "Factorial optimisation of CoCuFe- LDH/graphene composites for water splitting." ECS Meeting Abstracts MA2024-02, no. 42 (2024): 2805. https://doi.org/10.1149/ma2024-02422805mtgabs.

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The increasing energy demand, driven by industrialization and global population growth, has increased the focus on developing clean and sustainable energy sources [1]. Hydrogen (H2) has emerged as a promising alternative to carbon-based fuels due to its low cost, higher calorific value, and absence of pollution emissions [2]. Electrochemical water splitting has recently gained prominence as a highly attractive technique for efficient hydrogen production [3]. Therefore, the development of efficient and cost-effective catalysts for the hydrogen evolution reaction (HER) is crucial for advancing e
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24

Aldemir, Oya, Runa Ozelci, Emre Baser, et al. "Impact of Transferring a Poor Quality Embryo Along with a Good Quality Embryo on Pregnancy Outcomes in IVF/ICSI Cycles: a Retrospective Study." Geburtshilfe und Frauenheilkunde 80, no. 08 (2020): 844–50. http://dx.doi.org/10.1055/a-1213-9164.

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Abstract Background The number and the quality of embryos transferred are important predictors of success in in vitro fertilization (IVF) cycles. In the presence of more than one good quality embryo on the transfer day, double-embryo transfer (DET) can be performed with these embryos, but generally, different quality embryos are present in the available transfer cohort. We aimed to investigate the effect of transferring a poor quality embryo along with a good quality embryo on IVF outcomes. Methods In this study, 2298 fresh IVF/intracytoplasmic sperm injection (ICSI) cycles with two good quali
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25

Mohanty, J., H. Pal, S. K. Nayak, S. Chattopadhyay, and A. V. Sapre. "Photoinduced dissociative electron transfer (DET) interactions in methoxycalixarene–chloroalkane systems." Chemical Physics Letters 370, no. 5-6 (2003): 641–46. http://dx.doi.org/10.1016/s0009-2614(03)00179-9.

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26

Henao-Pabon, Gilberto, Ning Gao, K. Sudhakara Prasad, and XiuJun Li. "Direct Electron Transfer of Glucose Oxidase on Pre-Anodized Paper/Carbon Electrodes Modified through Zero-Length Cross-Linkers for Glucose Biosensors." Biosensors 13, no. 5 (2023): 566. http://dx.doi.org/10.3390/bios13050566.

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A disposable paper-based glucose biosensor with direct electron transfer (DET) of glucose oxidase (GOX) was developed through simple covalent immobilization of GOX on a carbon electrode surface using zero-length cross-linkers. This glucose biosensor exhibited a high electron transfer rate (ks, 3.363 s−1) as well as good affinity (km, 0.03 mM) for GOX while keeping innate enzymatic activities. Furthermore, the DET-based glucose detection was accomplished by employing both square wave voltammetry and chronoamperometric techniques, and it achieved a glucose detection range from 5.4 mg/dL to 900 m
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27

Yan, Xiaomei, Jing Tang, David Tanner, Jens Ulstrup, and Xinxin Xiao. "Direct Electrochemical Enzyme Electron Transfer on Electrodes Modified by Self-Assembled Molecular Monolayers." Catalysts 10, no. 12 (2020): 1458. http://dx.doi.org/10.3390/catal10121458.

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Self-assembled molecular monolayers (SAMs) have long been recognized as crucial “bridges” between redox enzymes and solid electrode surfaces, on which the enzymes undergo direct electron transfer (DET)—for example, in enzymatic biofuel cells (EBFCs) and biosensors. SAMs possess a wide range of terminal groups that enable productive enzyme adsorption and fine-tuning in favorable orientations on the electrode. The tunneling distance and SAM chain length, and the contacting terminal SAM groups, are the most significant controlling factors in DET-type bioelectrocatalysis. In particular, SAM-modifi
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28

Wang, Ruijie, Xiaoshuai Wu, Chang Liu, et al. "Hierarchical Porous Carbon Fibers for Enhanced Interfacial Electron Transfer of Electroactive Biofilm Electrode." Catalysts 12, no. 10 (2022): 1187. http://dx.doi.org/10.3390/catal12101187.

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The nanoporous carbon fiber materials derived from electrospun polyacrylonitrile (PAN) fibers doped with zeolitic imidazolate framework are developed here and applied in the microbe fuel cell anode for enhanced interfacial electron transfer. Zeolitic imidazolate fram-8 (ZIF-8) could introduce a large number of mesopores into fibers, which significantly promote indirect electron transfer mediated by flavins (IET). Moreover, it is noted that thinner fibers are more suitable for cytochromes-based direct electron transfer (DET). Furthermore, the enlarged fiber interspace strengthens the amount of
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29

Suzuki, Nanami, Jinhee Lee, Noya Loew, et al. "Engineered Glucose Oxidase Capable of Quasi-Direct Electron Transfer after a Quick-and-Easy Modification with a Mediator." International Journal of Molecular Sciences 21, no. 3 (2020): 1137. http://dx.doi.org/10.3390/ijms21031137.

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Glucose oxidase (GOx) has been widely utilized for monitoring glycemic levels due to its availability, high activity, and specificity toward glucose. Among the three generations of electrochemical glucose sensor principles, direct electron transfer (DET)-based third-generation sensors are considered the ideal principle since the measurements can be carried out in the absence of a free redox mediator in the solution without the impact of oxygen and at a low enough potential for amperometric measurement to avoid the effect of electrochemically active interferences. However, natural GOx is not ca
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30

Takeda, Kota, Makoto Yoshida, Kiyohiko Igarashi, and Nobuhumi Nakamura. "Direct Bioelectrocatalysis of Fungal Pyrroloquinoline Quinone-Dependent Pyranose Dehydrogenase Depending on the Alkyl Chain Lengths of Self-Assembled Monolayers." ECS Meeting Abstracts MA2024-02, no. 54 (2024): 3671. https://doi.org/10.1149/ma2024-02543671mtgabs.

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Redox enzyme catalysis coupled with electrode reaction is called bioelectrocatalysis and has become a key technology applicable to bioelectrochemical devices such as biosensors, biofuel cells and bioreactors. Since electron transfer between the enzyme and the electrode is the most important phenomenon, discussion of it has dominated the study of bioelectrocatalysis. Direct electron transfer (DET) between oxidoreductases and electrodes is important not only for understanding the fundamental properties of redox proteins, but also for developing mediator-free bioelectronic devices. Among enzymes
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31

Kim, Gyeongho, and Haesik Yang. "(Invited) Electrochemical Biosensor Using Direct Electron Transfer and an Antibody–Aptamer Hybrid Sandwich." ECS Meeting Abstracts MA2024-02, no. 54 (2024): 3704. https://doi.org/10.1149/ma2024-02543704mtgabs.

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Direct electron transfer (DET) between an electrode and redox labels is feasible in electrochemical biosensors using small aptamer–aptamer sandwiches; however, its application is limited in biosensors that rely on larger antibody–antibody sandwiches. The development of sandwich-type biosensors utilizing DET is challenged by the scarcity of aptamer–aptamer sandwich pairs with high affinity in complex biological samples. In this presentation, we introduce an electrochemical biosensor using an antibody–aptamer hybrid sandwich for detecting thrombin in human serum. The biosensor enables rapid DET
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32

Suzuki, Yohei, Keisei Sowa, Kenji Kano, Yuki Kitazumi, and Osamu Shirai. "Structural and Electrochemical Discussion on Direct Electron Transfer-Type Bioelectrocatalysis By Membrane-Bound Fructose Dehydrogenase from Gluconobacter Japonicus." ECS Meeting Abstracts MA2024-02, no. 67 (2024): 4728. https://doi.org/10.1149/ma2024-02674728mtgabs.

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Oxidoreductases have been utilized as bioelectrocatalysts to realize a variety of biotechnologies, such as biosensors, biofuel cells, solar fuel production, carbon dioxide capture and utilization, and cofactor-regeneration systems. These systems are based on bioelectrocatalysis which couples electrode and enzymatic reactions. Several metalloenzymes can communicate electronically with suitable electrodes without redox mediators. This phenomenon has been termed “direct electron transfer (DET)-type bioelectrocatalysis”. Owing to the mediator-less configuration, the reaction can offer the followin
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Mancuso, A. C., A. E. Sparks, H. E. Duran, B. J. Van Voorhis, and J. Kapfhamer. "Elective single embryo transfer (ESET) versus double embryo transfer (DET) following failed mandatory single embryo transfer (MSET)." Fertility and Sterility 110, no. 4 (2018): e192. http://dx.doi.org/10.1016/j.fertnstert.2018.07.562.

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Jacquet, Margot, Małgorzata Kiliszek, Silvio Osella, et al. "Molecular mechanism of direct electron transfer in the robust cytochrome-functionalised graphene nanosystem." RSC Advances 11, no. 31 (2021): 18860–69. http://dx.doi.org/10.1039/d1ra02419a.

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Molecular mechanism of DET between graphene and cytochrome c depends on the metal in the bio-organic interface: Co enhances the cathodic current via electron hopping from graphene to haem, whereas Ni exerts the opposite effect via tunnelling.
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35

Yaegashi, Yuki, Tong Sheng, Takumi Yanase, et al. "Development of a Direct Electron Transfer-Type Enzymatic Sensor for the Spermine in Saliva, a Marker of Pancreatic Cancer." ECS Meeting Abstracts MA2024-02, no. 54 (2024): 3702. https://doi.org/10.1149/ma2024-02543702mtgabs.

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Introduction Pancreatic cancer (PC) has one of the worst prognoses among cancers because of the scarcity of early symptoms and the delay of early diagnosis. Current most available and advanced diagnosis methods of PC are based on imaging technologies such as computed tomography, positron emission tomography, magnetic resonance imaging, and endoscopic ultrasonography. However, such imaging methods cannot diagnose PC at an early stage. Patients diagnosed with PC often have metastasized, and only less than 30% of PC patients can undergo surgical resection. Therefore, there is an urgent need for m
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36

Bräuning, H., H. Helm, J. S. Briggs,, and E. Salzborn. "Double electron transfer in H-+ H+collisions." Journal of Physics: Conference Series 88 (November 1, 2007): 012033. http://dx.doi.org/10.1088/1742-6596/88/1/012033.

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37

Bollella, Paolo, and Evgeny Katz. "Enzyme-Based Biosensors: Tackling Electron Transfer Issues." Sensors 20, no. 12 (2020): 3517. http://dx.doi.org/10.3390/s20123517.

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This review summarizes the fundamentals of the phenomenon of electron transfer (ET) reactions occurring in redox enzymes that were widely employed for the development of electroanalytical devices, like biosensors, and enzymatic fuel cells (EFCs). A brief introduction on the ET observed in proteins/enzymes and its paradigms (e.g., classification of ET mechanisms, maximal distance at which is observed direct electron transfer, etc.) are given. Moreover, the theoretical aspects related to direct electron transfer (DET) are resumed as a guideline for newcomers to the field. Snapshots on the ET the
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Kelly, Amelia G., Andria G. Besser, Emily Michelle Weidenbaum, Jamie A. Grifo, and Jennifer K. Blakemore. "DOUBLE EMBRYO TRANSFER (DET) WITH MOSAIC EMBRYOS HAVE EQUIVALENT LIVE BIRTH AND MULTIPLE PREGNANCY RATES AS EUPLOID DET." Fertility and Sterility 120, no. 4 (2023): e185. http://dx.doi.org/10.1016/j.fertnstert.2023.08.541.

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39

Ramanavicius, Simonas, and Arunas Ramanavicius. "Charge Transfer and Biocompatibility Aspects in Conducting Polymer-Based Enzymatic Biosensors and Biofuel Cells." Nanomaterials 11, no. 2 (2021): 371. http://dx.doi.org/10.3390/nano11020371.

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Charge transfer (CT) is a very important issue in the design of biosensors and biofuel cells. Some nanomaterials can be applied to facilitate the CT in these bioelectronics-based devices. In this review, we overview some CT mechanisms and/or pathways that are the most frequently established between redox enzymes and electrodes. Facilitation of indirect CT by the application of some nanomaterials is frequently applied in electrochemical enzymatic biosensors and biofuel cells. More sophisticated and still rather rarely observed is direct charge transfer (DCT), which is often addressed as direct
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40

Wang, Shixin, Xiaoming Zhang, and Enrico Marsili. "Electrochemical Characteristics of Shewanella loihica PV-4 on Reticulated Vitreous Carbon (RVC) with Different Potentials Applied." Molecules 27, no. 16 (2022): 5330. http://dx.doi.org/10.3390/molecules27165330.

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The current output of an anodic bioelectrochemical system (BES) depends upon the extracellular electron transfer (EET) rate from electricigens to the electrodes. Thus, investigation of EET mechanisms between electricigens and solid electrodes is essential. Here, reticulated vitreous carbon (RVC) electrodes are used to increase the surface available for biofilm formation of the known electricigen Shewanella loihica PV-4, which is limited in conventional flat electrodes. S. loihica PV-4 utilizes flavin-mediated EET at potential lower than the outer membrane cytochromes (OMC), while at higher pot
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41

SHLEEV, Sergey, Andreas CHRISTENSON, Vladimir SEREZHENKOV, et al. "Electrochemical redox transformations of T1 and T2 copper sites in native Trametes hirsuta laccase at gold electrode." Biochemical Journal 385, no. 3 (2005): 745–54. http://dx.doi.org/10.1042/bj20041015.

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Mediatorless, electrochemically driven, redox transformations of T1 (type 1) and T2 copper sites in Trametes hirsuta laccase were studied by cyclic voltammetry and spectroelectrochemical redox titrations using bare gold electrode. DET (direct electron transfer) between the electrode and the enzyme was observed under anaerobic conditions. From analysis of experimental data it is concluded that the T2 copper site is in DET contact with gold. It was found that electron transfer between the gold surface and the T1 copper site progresses through the T2 copper site. From EPR measurements and electro
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42

Hales, Natasha, Thomas J. Schmidt, and Emiliana Fabbri. "Exploring the Synergistic Ni-Fe-W Interplay in Double Perovskites to Understand the Operando Electronic Transformations Driving High Oxygen Evolution Reaction Activity and Stability." ECS Meeting Abstracts MA2024-02, no. 42 (2024): 2795. https://doi.org/10.1149/ma2024-02422795mtgabs.

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Novel flame-spray synthesized perovskite oxides of the composition BaSrNixFeyWzO6 exhibit excellent oxygen evolution reaction (OER) activity under alkaline conditions. In particular, BaSrNi0.9Fe0.1WO6, with a catalytic turn over frequency (TOF) six-times that of NiO, displays a competitive Tafel slope of 41 mV/dec in 0.1 M KOH electrolyte. The double perovskite structure, with its tunable AA’BB’O6 formula, provides a unique opportunity to enhance the intrinsic activity of Ni sites by co-doping with Fe and W. Comparing the transformations of BaSrNi0.9Fe0.1WO6 (BSNFW) and BaSrNiWO6 (BSNW) using
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43

Yamashita, Yuki, Inyoung Lee, Noya Loew, and Koji Sode. "Direct electron transfer (DET) mechanism of FAD dependent dehydrogenase complexes ∼from the elucidation of intra- and inter-molecular electron transfer pathway to the construction of engineered DET enzyme complexes∼." Current Opinion in Electrochemistry 12 (December 2018): 92–100. http://dx.doi.org/10.1016/j.coelec.2018.07.013.

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Martinez, A. E., R. Gayet, J. Hanssen, and R. D. Rivarola. "Thomas two-step mechanisms for double electron transfer." Journal of Physics B: Atomic, Molecular and Optical Physics 27, no. 14 (1994): L375—L382. http://dx.doi.org/10.1088/0953-4075/27/14/012.

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45

Kelley, S. O. "Electron Transfer Between Bases in Double Helical DNA." Science 283, no. 5400 (1999): 375–81. http://dx.doi.org/10.1126/science.283.5400.375.

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46

Dorenbos, P., A. J. J. Bos, and N. R. J. Poolton. "Electron transfer processes in double lanthanide activated YPO4." Optical Materials 33, no. 7 (2011): 1019–23. http://dx.doi.org/10.1016/j.optmat.2010.08.016.

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Maie, Kenji, Kazuyuki Miyagi, Tadao Takada, Mitsunobu Nakamura, and Kazushige Yamana. "RNA-Mediated Electron Transfer: Double Exponential Distance Dependence." Journal of the American Chemical Society 131, no. 37 (2009): 13188–89. http://dx.doi.org/10.1021/ja902647j.

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Tergiman, Y. S., and M. C. Bacchus-Montabonel. "Double-electron capture processes in charge transfer reactions." International Journal of Quantum Chemistry 99, no. 5 (2004): 628–33. http://dx.doi.org/10.1002/qua.10843.

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Priyadarshy, Satyam, David N. Beratan, and Steven M. Risser. "DNA double-helix-mediated long-range electron transfer." International Journal of Quantum Chemistry 60, no. 8 (1996): 1789–95. http://dx.doi.org/10.1002/(sici)1097-461x(1996)60:8<1789::aid-qua6>3.0.co;2-u.

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50

Pyun, Su-Il. "Thermodynamic and electro-kinetic analyses of direct electron transfer (DET) and mediator-involved electron transfer (MET) with the help of a redox electron mediator." Journal of Solid State Electrochemistry 24, no. 11-12 (2020): 2685–93. http://dx.doi.org/10.1007/s10008-020-04780-2.

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