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Artículos de revistas sobre el tema "Circularly Polarized Luminescence (CPL)"

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Autor: Grafiati
Publicado: 22 de junio de 2023

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1

Imai, Yoshitane. "Generation of Circularly Polarized Luminescence by Symmetry Breaking". Symmetry 12, n.º 11 (28 de octubre de 2020): 1786. http://dx.doi.org/10.3390/sym12111786.

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Circularly polarized luminescence (CPL) has attracted significant attention in the fields of chiral photonic science and optoelectronic materials science. In a CPL-emitting system, a chiral luminophore derived from chiral molecules is usually essential. In this review, three non-classical CPL (NC-CPL) systems that do not use enantiomerically pure molecules are reported: (i) supramolecular organic luminophores composed of achiral organic molecules that can emit CPL without the use of any chiral auxiliaries, (ii) achiral or racemic luminophores that can emit magnetic CPL (MCPL) by applying an external magnetic field of 1.6 T, and (iii) circular dichroism-silent organic luminophores that can emit CPL in the photoexcited state as a cryptochiral CPL system.
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2

Song, Fengyan, Zheng Zhao, Zhiyang Liu, Jacky W. Y. Lam y Ben Zhong Tang. "Circularly polarized luminescence from AIEgens". Journal of Materials Chemistry C 8, n.º 10 (2020): 3284–301. http://dx.doi.org/10.1039/c9tc07022b.

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3

Kumar, Jatish, Tsuyoshi Kawai y Takuya Nakashima. "Circularly polarized luminescence in chiral silver nanoclusters". Chemical Communications 53, n.º 7 (2017): 1269–72. http://dx.doi.org/10.1039/c6cc09476g.

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Sets of mirror image circular dichroism (CD) and circularly polarized luminescence (CPL) spectra are for the first time demonstrated using enantiomeric dihydrolipoic acid (DHLA)-capped silver nanoclusters.
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4

Imagawa, Takuro, Shuzo Hirata, Kenro Totani, Toshiyuki Watanabe y Martin Vacha. "Thermally activated delayed fluorescence with circularly polarized luminescence characteristics". Chemical Communications 51, n.º 68 (2015): 13268–71. http://dx.doi.org/10.1039/c5cc04105h.

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A metal-free aromatic compound exhibiting thermally activated delayed fluorescence as well as circularly polarized luminescence (CPL) with dissymmetry factors of 10−3 is reported. This compound shows a sign inversion between its circular dichroism signal and CPL, which is caused by a large conformational change upon photoexcitation.
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5

Zou, Chen, Dan Qu, Haijing Jiang, Di Lu, Xiaoting Ma, Ziyi Zhao y Yan Xu. "Bacterial Cellulose: A Versatile Chiral Host for Circularly Polarized Luminescence". Molecules 24, n.º 6 (13 de marzo de 2019): 1008. http://dx.doi.org/10.3390/molecules24061008.

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Materials capable of circularly polarized luminescence (CPL) have attracted considerable attention for their promising potential applications. Bacterial cellulose (BC) was characterized as having a stable right-handed twist, which makes it a potential chiral host to endow luminophores with CPL. Then, the CPL-active BC composite film was constructed by simply impregnating bacterial cellulose pellicles with dilute aqueous solutions of luminophores (rhodamine B, carbon dots, polymer dots) and drying under ambient conditions. Simple encapsulation of luminophores renders BC with circularly polarized luminescence with a dissymmetry factor of up to 0.03. The multiple chiral centers of bacterial cellulose provide a primary asymmetric environment that can be further modulated by supramolecular chemistry, which is responsible for its circular polarization ability. We further demonstrate that commercial grade paper may endow luminophores with CPL activity, which reifies the universality of the method.
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6

Chen, Jingqi, Yingying Chen, Lijuan Zhao, Lingyan Feng, Feifei Xing, Chuanqi Zhao, Lianzhe Hu, Jinsong Ren y Xiaogang Qu. "G-quadruplex DNA regulates invertible circularly polarized luminescence". Journal of Materials Chemistry C 7, n.º 44 (2019): 13947–52. http://dx.doi.org/10.1039/c9tc04508b.

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Circularly polarized luminescence (CPL) was performed for the first time in G4 research in which chirality transfer from G4 to the achiral dye. Opposite CPL signals are obtained on mirror d-/l-enantiomers and parallel/antiparallel G4 changes.
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7

Zheng, Anyi, Tonghan Zhao, Xue Jin, Wangen Miao y Pengfei Duan. "Circularly polarized luminescent porous crystalline nanomaterials". Nanoscale 14, n.º 4 (2022): 1123–35. http://dx.doi.org/10.1039/d1nr07069j.

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An overview of generation, regulation and amplification of circularly polarized luminescence (CPL) in porous crystalline nanomaterials by direct synthesis, chirality induction or adaption, and symmetry breaking pathways.
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8

Wang, Chen, Luyao Feng, Junxiao Liu, Jing Fu, Jinglin Shen y Wei Qi. "Manipulating the Assembly of Au Nanoclusters for Luminescence Enhancement and Circularly Polarized Luminescence". Nanomaterials 12, n.º 9 (25 de abril de 2022): 1453. http://dx.doi.org/10.3390/nano12091453.

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Au nanocluster (AuNCs)-based luminescent functional materials have attracted the interest of researchers owing to their small size, tractable surface modification, phosphorescence lifetime and biocompatibility. However, the poor luminescence quantum yield (QY) of AuNCs limits their practical applications. Herein, we synthesized a type of AuNCs modified by 4,6-diamino-2-mercaptopyrimidine hydrate (DPT-AuNCs). Furthermore, organic acids, i.e., citric acid (CA) and tartaric acid (TA), were chosen for co-assembly with DPT-AuNCs to produce AuNCs-based luminescent materials with enhanced emission. Firstly, it was found that CA could significantly enhance the emission of DPT−AuNCs with the formation of red emission nanofibers (QY = 17.31%), which showed a potential for usage in I− detection. The n···π/π···π interaction between the CA and the DPT ligand was proposed as crucial for the emission. Moreover, chiral TA could not only improve the emission of DPT-AuNCs, but could also transfer its chirality to DPT-AuNCs and induce the formation of circularly polarized luminescence (CPL)-active nanofibers. It was demonstrated that the CPL signal could increase 4.6-fold in a ternary CA/TA/DPT-AuNCs co-assembly system. This work provides a convenient way to build AuNCs-based luminescent materials as probes, and opens a new avenue for building CPL-active materials by achiral NCs through a co-assembly strategy.
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9

Wang, Chen, Luyao Feng, Junxiao Liu, Jing Fu, Jinglin Shen y Wei Qi. "Manipulating the Assembly of Au Nanoclusters for Luminescence Enhancement and Circularly Polarized Luminescence". Nanomaterials 12, n.º 9 (25 de abril de 2022): 1453. http://dx.doi.org/10.3390/nano12091453.

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Au nanocluster (AuNCs)-based luminescent functional materials have attracted the interest of researchers owing to their small size, tractable surface modification, phosphorescence lifetime and biocompatibility. However, the poor luminescence quantum yield (QY) of AuNCs limits their practical applications. Herein, we synthesized a type of AuNCs modified by 4,6-diamino-2-mercaptopyrimidine hydrate (DPT-AuNCs). Furthermore, organic acids, i.e., citric acid (CA) and tartaric acid (TA), were chosen for co-assembly with DPT-AuNCs to produce AuNCs-based luminescent materials with enhanced emission. Firstly, it was found that CA could significantly enhance the emission of DPT−AuNCs with the formation of red emission nanofibers (QY = 17.31%), which showed a potential for usage in I− detection. The n···π/π···π interaction between the CA and the DPT ligand was proposed as crucial for the emission. Moreover, chiral TA could not only improve the emission of DPT-AuNCs, but could also transfer its chirality to DPT-AuNCs and induce the formation of circularly polarized luminescence (CPL)-active nanofibers. It was demonstrated that the CPL signal could increase 4.6-fold in a ternary CA/TA/DPT-AuNCs co-assembly system. This work provides a convenient way to build AuNCs-based luminescent materials as probes, and opens a new avenue for building CPL-active materials by achiral NCs through a co-assembly strategy.
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10

He, Dong-Qiang, Hai-Yan Lu, Meng Li y Chuan-Feng Chen. "Intense blue circularly polarized luminescence from helical aromatic esters". Chemical Communications 53, n.º 45 (2017): 6093–96. http://dx.doi.org/10.1039/c7cc01882g.

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11

Chen, Wenjie, Kai Ma, Pengfei Duan, Guanghui Ouyang, Xuefeng Zhu, Li Zhang y Minghua Liu. "Circularly polarized luminescence of nanoassemblies via multi-dimensional chiral architecture control". Nanoscale 12, n.º 38 (2020): 19497–515. http://dx.doi.org/10.1039/d0nr04239k.

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Circularly polarized luminescence (CPL) is currently an important chiroptical properties among chiral systems. By tuning the dimensional architectures of nanoassemblies, the CPL properties could be effectively tuned and boosted.
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12

Fan, Huahua, Hejin Jiang, Xuefeng Zhu, Zongxia Guo, Li Zhang y Minghua Liu. "Switchable circularly polarized luminescence from a photoacid co-assembled organic nanotube". Nanoscale 11, n.º 21 (2019): 10504–10. http://dx.doi.org/10.1039/c9nr01959f.

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13

Shang, Hongxing, Zeyang Ding, Yue Shen, Bing Yang, Minghua Liu y Shimei Jiang. "Multi-color tunable circularly polarized luminescence in one single AIE system". Chemical Science 11, n.º 8 (2020): 2169–74. http://dx.doi.org/10.1039/c9sc05643b.

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14

Orsini, Sibilla, Francesco Zinna, Tarita Biver, Lorenzo Di Bari y Ilaria Bonaduce. "Circularly polarized luminescence reveals interaction between commercial stains and protein matrices used in paintings". RSC Advances 6, n.º 98 (2016): 96176–81. http://dx.doi.org/10.1039/c6ra14795j.

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Here we show that circularly polarized luminescence (CPL) can give unique insight into interactions between fluorescent commercial stains and protein-based materials used in painting. CPL can complement information from ECD and fluorescence.
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15

Wang, Yuxiang, Xiaojing Li, Lan Yang, Wei-Yin Sun, Chengjian Zhu y Yixiang Cheng. "Amplification effect of circularly polarized luminescence induced from binaphthyl-based zinc(ii) chiral coordination polymers". Materials Chemistry Frontiers 2, n.º 3 (2018): 554–58. http://dx.doi.org/10.1039/c7qm00560a.

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16

Yu, Huli, Biao Zhao, Jinbao Guo, Kai Pan y Jianping Deng. "Stimuli-responsive circularly polarized luminescent films with tunable emission". Journal of Materials Chemistry C 8, n.º 4 (2020): 1459–65. http://dx.doi.org/10.1039/c9tc06105c.

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17

Wang, Yuxiang, Xiaojing Li, Fei Li, Wei-Yin Sun, Chengjian Zhu y Yixiang Cheng. "Strong circularly polarized luminescence induced from chiral supramolecular assembly of helical nanorods". Chemical Communications 53, n.º 54 (2017): 7505–8. http://dx.doi.org/10.1039/c7cc04363e.

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18

Zhao, Tonghan, Jianlei Han, Xue Jin, Minghao Zhou, Yan Liu, Pengfei Duan y Minghua Liu. "Dual-Mode Induction of Tunable Circularly Polarized Luminescence from Chiral Metal-Organic Frameworks". Research 2020 (23 de enero de 2020): 1–12. http://dx.doi.org/10.34133/2020/6452123.

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The general approach for fabricating solid-state materials showing circularly polarized luminescence (CPL) is still in its challenge. In this work, chiral metal-organic frameworks (MOFs) with full-color and white-color circularly polarized light emission are firstly achieved through a host-guest emitter-loading strategy. Chiral zeolitic imidazolate frameworks (ZIFs, a class of MOFs) are fabricated by a facile and simple mixed-ligand coassembly pathway. Meantime, achiral dyes, quantum dots (QDs), and upconversion nanoparticles (UCNPs) are easily loaded into the chiral ZIFs during the synthetic process. Size-matched dyes can be solely encapsulated into the chiral cages of ZIF, resulting in induced CPL and enhanced luminescence efficiency in solid-state ZIF⊃dye composites. Large-sized QDs, after embedding into the gap of the ZIF particles, also exhibited intense CPL activity. Furthermore, through modulating the blending ratio of colored dyes or QDs in chiral ZIFs, white light-emitting ZIFs with circular polarization could be constructed in a solid state. In addition, through loading rare earth element-based upconversion nanoparticles (UCNPs) into chiral ZIFs, upconverted CPL (UC-CPL) could be achieved with a high dissymmetry factor (glum). Thus, various achiral luminophores were endowed with CPL upon coupling with chiral ZIFs, which significantly deepened and enlarged the research scope of the chiroptical materials in a solid state.
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19

Wu, Tao y Petr Bouř. "Specific circularly polarized luminescence of Eu(iii), Sm(iii), and Er(iii) induced by N-acetylneuraminic acid". Chemical Communications 54, n.º 14 (2018): 1790–92. http://dx.doi.org/10.1039/c7cc09463a.

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Sialic acid chelated with the Eu, Sm and Er ions provides distinct circularly polarized luminescence (CPL) patterns that can be used for its detection. The CPL spectra were measured using the Raman optical activity (ROA) technique.
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20

Adewuyi, Joseph A., Nathan D. Schley y Gaël Ung. "Synthesis of bright water-soluble circularly polarized luminescence emitters as potential sensors". Inorganic Chemistry Frontiers 9, n.º 7 (2022): 1474–80. http://dx.doi.org/10.1039/d1qi01398j.

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21

Salerno, Francesco, José Augusto Berrocal, Andreas T. Haedler, Francesco Zinna, E. W. Meijer y Lorenzo Di Bari. "Highly circularly polarized broad-band emission from chiral naphthalene diimide-based supramolecular aggregates". Journal of Materials Chemistry C 5, n.º 14 (2017): 3609–15. http://dx.doi.org/10.1039/c7tc00281e.

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22

Gon, Masayuki, Yasuhiro Morisaki y Yoshiki Chujo. "Optically active cyclic compounds based on planar chiral [2.2]paracyclophane: extension of the conjugated systems and chiroptical properties". Journal of Materials Chemistry C 3, n.º 3 (2015): 521–29. http://dx.doi.org/10.1039/c4tc02339k.

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23

Morisue, Mitsuhiko, Takashi Yumura, Risa Sawada, Masanobu Naito, Yasuhisa Kuroda y Yoshiki Chujo. "Oligoamylose-entwined porphyrin: excited-state induced-fit for chirality induction". Chemical Communications 52, n.º 12 (2016): 2481–84. http://dx.doi.org/10.1039/c5cc08488a.

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An oligoamylose-strapped porphyrin displayed circularly polarized luminescence (CPL) in the S1 state despite being silent in circular dichroism (CD) in the ground state, suggesting chirality induction in the photoexcited porphyrin moiety from the oligoamylose-strap in the photoexcited state.
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24

Yin, Yueru, Ze Chen, Yifei Han, Rui Liao y Feng Wang. "Chiral supramolecular polymerization of dicyanostilbenes with emergent circularly polarized luminescence behavior". Organic Chemistry Frontiers 8, n.º 18 (2021): 4986–93. http://dx.doi.org/10.1039/d1qo00756d.

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25

Li, Pengyu, Baozhong Lü, Dongxue Han, Pengfei Duan, Minghua Liu y Meizhen Yin. "Stoichiometry-controlled inversion of circularly polarized luminescence in co-assembly of chiral gelators with an achiral tetraphenylethylene derivative". Chemical Communications 55, n.º 15 (2019): 2194–97. http://dx.doi.org/10.1039/c8cc08924h.

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A supramolecular circularly polarized luminescence (CPL) system was constructed based on the co-gelation of an achiral tetraphenylethylene derivative and chiral organic gelators of glutamic acid in chloroform. And the handedness of CPL can be inverted by stoichiometric ratio.
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26

Jiang, Pan, Wei Liu, Yi Li, Baozong Li y Yonggang Yang. "pH-influenced handedness inversion of circularly polarized luminescence". New Journal of Chemistry 45, n.º 46 (2021): 21941–46. http://dx.doi.org/10.1039/d1nj04824d.

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27

Li, Junfeng, Chenglong Yang, Xuelei Peng, Qi Qi, Yonghua Li, Wen-Yong Lai y Wei Huang. "Stimuli-responsive circularly polarized luminescence from an achiral perylenyl dyad". Org. Biomol. Chem. 15, n.º 39 (2017): 8463–70. http://dx.doi.org/10.1039/c7ob01959a.

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28

Nagata, Yuuya, Tsuyoshi Nishikawa y Michinori Suginome. "Chirality-switchable circularly polarized luminescence in solution based on the solvent-dependent helix inversion of poly(quinoxaline-2,3-diyl)s". Chem. Commun. 50, n.º 69 (2014): 9951–53. http://dx.doi.org/10.1039/c4cc03944k.

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29

Sakai, Hayato, Takako Kubota, Junpei Yuasa, Yasuyuki Araki, Tomo Sakanoue, Taishi Takenobu, Takehiko Wada, Tsuyoshi Kawai y Taku Hasobe. "Protonation-induced red-coloured circularly polarized luminescence of [5]carbohelicene fused by benzimidazole". Organic & Biomolecular Chemistry 14, n.º 28 (2016): 6738–43. http://dx.doi.org/10.1039/c6ob00937a.

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30

Mukhina, Maria V., Vladimir G. Maslov, Ivan V. Korsakov, Finn Purcell Milton, Alexander Loudon, Alexander V. Baranov, Anatoly V. Fedorov y Yurii K. Gun’ko. "Optically active II-VI semiconductor nanocrystals via chiral phase transfer". MRS Proceedings 1793 (2015): 27–33. http://dx.doi.org/10.1557/opl.2015.652.

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ABSTRACTWe report optically active ensembles of II-VI semiconductor nanocrystals prepared via chiral phase transfer, which is initiated by exchange of the original achiral ligands capping the nanocrystals surfaces for chiral L- and D-cysteine. We used this method to obtain ensembles of CdSe, CdS, ZnS:Mn, and CdSe/ZnS quantum dots and CdSe/CdS quantum rods exhibited Circular Dichroism (CD) and Circularly Polarized Luminescence (CPL) signals. The optically active nanocrystals revealed the CD and CPL bands strongly correlated with absorption and luminescence bands with unique band “pattern” for each material and the nanocrystal shape.
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31

Hasegawa, Yasuchika, Yui Miura, Yuichi Kitagawa, Satoshi Wada, Takayuki Nakanishi, Koji Fushimi, Tomohiro Seki et al. "Spiral Eu(iii) coordination polymers with circularly polarized luminescence". Chemical Communications 54, n.º 76 (2018): 10695–97. http://dx.doi.org/10.1039/c8cc05147j.

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32

Li, Junfeng, Chenxi Hou, Chao Huang, Shanqi Xu, Xuelei Peng, Qi Qi, Wen-Yong Lai y Wei Huang. "Boosting Circularly Polarized Luminescence of Organic Conjugated Systems via Twisted Intramolecular Charge Transfer". Research 2020 (22 de abril de 2020): 1–10. http://dx.doi.org/10.34133/2020/3839160.

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Realizing a high luminescence dissymmetry factor (glum) is a paramount yet challenging issue in the research field of circularly polarized luminescence (CPL). Here, we reported a novel set of organic conjugated systems with twisted intramolecular charge transfer (TICT) characteristics based on conjugated o-carborane-binaphthyl dyads composing of binaphthyl units as chiral electron donors and o-carborane units as achiral electron acceptors, demonstrating intense CPL with large glum values. Interestingly, single-crystalline o-1 exhibited a high-level brightness and a large glum factor as high as +0.13, whereas single-crystalline o-2 processed a relatively low brightness with a decreased glum value to -0.04. The significant diversity of CPL-active properties was triggered by the selective introduction of o-carborane units onto the binaphthyl units. Benefiting from the large magnetic dipole transition moments in TICT states, the CPL activity of TICT o-carborane-based materials exhibited amplified circular polarization. This study provides an efficient molecular engineering strategy for the rational design and development of highly efficient CPL-active materials.
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33

Xu, Mingcong, Chunhui Ma, Jin Zhou, Yushan Liu, Xueyun Wu, Sha Luo, Wei Li et al. "Assembling semiconductor quantum dots in hierarchical photonic cellulose nanocrystal films: circularly polarized luminescent nanomaterials as optical coding labels". Journal of Materials Chemistry C 7, n.º 44 (2019): 13794–802. http://dx.doi.org/10.1039/c9tc04144c.

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Exploring semiconductor quantum dots (QDs) with circularly polarized luminescence (CPL) is desirable to design optoelectronic devices owing to the easily tunable emission wavelengths and photophysical stability.
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34

Saleh, Nidal, Monika Srebro, Thibault Reynaldo, Nicolas Vanthuyne, Loïc Toupet, Victoria Y. Chang, Gilles Muller et al. "enantio-Enriched CPL-active helicene–bipyridine–rhenium complexes". Chemical Communications 51, n.º 18 (2015): 3754–57. http://dx.doi.org/10.1039/c5cc00453e.

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35

Yang, Li, Fang Wang, Dang-i. Y. Auphedeous y Chuanliang Feng. "Achiral isomers controlled circularly polarized luminescence in supramolecular hydrogels". Nanoscale 11, n.º 30 (2019): 14210–15. http://dx.doi.org/10.1039/c9nr05033g.

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36

He, Chen-Lu, Zeyu Feng, Yan Li, Manman Zhou, Liyang Zhao, Sizhen Shan, Mengqiao Wang, Xin Chen, Xi-Sheng Wang y Gang Zou. "Improved enantioselectivity in thiol–ene photopolymerization of sulphur-containing polymers with circularly polarized luminescence". Polymer Chemistry 12, n.º 16 (2021): 2433–38. http://dx.doi.org/10.1039/d1py00082a.

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Optically active poly(thioether) are obtained based on CPL-triggered thiol–ene photopolymerization assisted with achiral HAD. The poly(thioether) exhibits clusterization-triggered emission and circularly polarized luminescence behavior.
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37

Taniguchi, Ayano, Daiki Kaji, Nobuyuki Hara, Ryosuke Murata, Shogo Akiyama, Takunori Harada, Atsushi Sudo, Hiroyuki Nishikawa y Yoshitane Imai. "Solid-state AIEnh-circularly polarised luminescence of chiral perylene diimide fluorophores". RSC Advances 9, n.º 4 (2019): 1976–81. http://dx.doi.org/10.1039/c8ra09785b.

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Chiral N,N′-bis(1-phenylethyl)perylene-3,4,9,10-tetracarboxylic acid diimide (BPP) exhibits solid-state aggregation-induced enhanced circularly polarized luminescence (AIEnh-CPL) in KBr, PMMA, and myo-IPU matrices..
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38

Zinna, Francesco, Lorenzo Arrico y Lorenzo Di Bari. "Near-infrared circularly polarized luminescence from chiral Yb(iii)-diketonates". Chemical Communications 55, n.º 46 (2019): 6607–9. http://dx.doi.org/10.1039/c9cc03032h.

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We report a rare example of near infrared circularly polarized luminescence (NIR-CPL) in the 920–1050 nm region associated with the f–f transitions of Yb diketonate complexes bearing chiral ancillary ligands.
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39

Hirano, Kyohei, Toshiaki Ikeda, Naoka Fujii, Takehiro Hirao, Masashi Nakamura, Yohei Adachi, Joji Ohshita y Takeharu Haino. "Helical assembly of a dithienogermole exhibiting switchable circularly polarized luminescence". Chemical Communications 55, n.º 71 (2019): 10607–10. http://dx.doi.org/10.1039/c9cc05253d.

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Chiral dithienogermoles possessing phenylisoxazoles were self-assembled to form the helical assemblies, exhibiting circularly polarized luminescence. The CPL signals were inverted in the elongation regime with respect to those in the nucleation regime.
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40

Chen, Jingqi, Xiaowei Liu, Zhiguang Suo, Chenqi Gao, Feifei Xing, Lingyan Feng, Chuanqi Zhao, Lianzhe Hu, Jinsong Ren y Xiaogang Qu. "Right-/left-handed helical G-quartet nanostructures with full-color and energy transfer circularly polarized luminescence". Chemical Communications 56, n.º 56 (2020): 7706–9. http://dx.doi.org/10.1039/d0cc02449j.

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Right- and left-handed helical G-quartet nanostructures are synthesized for the first time simultaneously via 5′-guanosine monophosphate (GMP) self-assembly, and further applied as circularly polarized luminescence (CPL) templates.
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41

Niu, Dian, Lukang Ji, Guanghui Ouyang y Minghua Liu. "Achiral non-fluorescent molecule assisted enhancement of circularly polarized luminescence in naphthalene substituted histidine organogels". Chemical Communications 54, n.º 9 (2018): 1137–40. http://dx.doi.org/10.1039/c7cc09049h.

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A naphthalene substituted histidine derivative was found to form an organogel showing circularly polarized luminescence (CPL) and the addition of non-fluorescent achiral benzoic acids could efficiently enhance the CPLvianon-covalent interactions.
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42

Wang, Ling-Yun, Zheng-Fei Liu, Kun-Xu Teng, Li-Ya Niu y Qing-Zheng Yang. "Circularly polarized luminescence from helical N,O-boron-chelated dipyrromethene (BODIPY) derivatives". Chemical Communications 58, n.º 23 (2022): 3807–10. http://dx.doi.org/10.1039/d1cc06051a.

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We report N,O-boron-chelated dipyrromethene derivatives exhibiting circularly polarized luminescence (CPL) in the red/near-infrared region, with enhanced |glum| values from 10−4 in solutions to 10−2 in aggregate states.
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43

Maeda, Hiromitsu y Yuya Bando. "Recent progress in research on stimuli-responsive circularly polarized luminescence based on π-conjugated molecules". Pure and Applied Chemistry 85, n.º 10 (1 de octubre de 2013): 1967–78. http://dx.doi.org/10.1351/pac-con-12-11-09.

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This short review article summarizes recent progress in research on various stimuli-responsive circularly polarized luminescence (CPL) properties derived from π-conjugated molecules and related materials. As representative examples, assembled structures of chiral π-conjugated polymers and molecules showed tunable CPL resulting from the enhancement of chirality induction by aggregation. Fascinating CPL-active species, pyrrole-based anion-responsive π-conjugated molecules exhibiting CPL induced by anion binding and ion pairing, are also discussed.
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44

Mimura, Yuki, Yuki Motomura, Mizuki Kitamatsu y Yoshitane Imai. "Development of Circularly Polarized Luminescence (CPL) Peptides Containing Pyrenylalanines and 2-Aminoisobutyric Acid". Processes 8, n.º 12 (27 de noviembre de 2020): 1550. http://dx.doi.org/10.3390/pr8121550.

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Chiral organic and organometallic luminophores that possess circularly polarized luminescence (CPL) properties in the near-ultraviolet to near-infrared region have several useful applications. However, the CPL properties are subject to inherent factors of the compounds; to date, studies on the CPL properties influenced by amino acids and peptides are scarce. Consequently, we developed peptide-pyrene organic luminophores exhibiting various CPL properties. It is conceivable that the peptide-pyrene organic luminophores can be obtained as aggregates when dissolved in a solution. It is also possible that the formation of aggregates makes it difficult to accurately examine the CPL of the peptide in the solution. This study showed that the introduction of sterically hindered 2-aminoisobutyric acid (Aib) units into the peptide backbone inhibits aggregate formation. The resulting luminophores exhibit CPL properties owing to the presence of pyrene units. The results of this study can form a basis for the design of future materials that use peptide-pyrene organic luminophores.
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45

El Rez, Bahjat, Jiawen Liu, Virginie Béreau, Carine Duhayon, Yuki Horino, Takayoshi Suzuki, Laurent Coolen y Jean-Pascal Sutter. "Concomitant emergence of circularly polarized luminescence and single-molecule magnet behavior in chiral-at-metal Dy complex". Inorganic Chemistry Frontiers 7, n.º 22 (2020): 4527–34. http://dx.doi.org/10.1039/d0qi00919a.

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Circularly polarized luminescence was evidence in solid state for a chiral-at-metal Dy(iii) single-molecule magnet. This CPL is opposite for the enantiomers and develops when the relaxation of the magnetization for the Dy becomes slower.
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46

Chen, Naibo y Bo Yan. "Recent Theoretical and Experimental Progress in Circularly Polarized Luminescence of Small Organic Molecules". Molecules 23, n.º 12 (19 de diciembre de 2018): 3376. http://dx.doi.org/10.3390/molecules23123376.

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Small organic molecules (SOMs) with fascinating chiroptical properties have received much attention for their potential applications in photoelectric and biological devices. As an important research tool, circularly polarized luminescence (CPL) provides information about the chiral structures of these molecules in their excited state, and has been an active area of research. With the development of the commercially available CPL instrumentation, currently, more and more research groups have attempted to enhance the CPL parameters (i.e., quantum yield and dissymmetry factor) of the chiral SOMs from all aspects. This review summarizes the latest five years progresses in research on the experimental techniques and theoretical calculations of CPL emitted from SOMs, as well as forecasting its trend of development.
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47

Puneet, Puhup, Sajan Singh, Michiya Fujiki y Bhanu Nandan. "Handed Mirror Symmetry Breaking at the Photo-Excited State of π-Conjugated Rotamers in Solutions". Symmetry 13, n.º 2 (5 de febrero de 2021): 272. http://dx.doi.org/10.3390/sym13020272.

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The quest to decode the evolution of homochirality of life on earth has stimulated research at the molecular level. In this study, handed mirror symmetry breaking, and molecular parity violation hypotheses of systematically designed π-conjugated rotamers possessing anthracene and bianthracene core were evinced via circularly polarized luminescence (CPL) and circular dichroism (CD). The CPL signals were found to exhibit a (−)-sign, and a handed dissymmetry ratio, which increased with viscosity of achiral solvents depending on the rotation barrier of rotamers. The time-resolved photoluminescence spectroscopy and quantum efficiency measurement of these luminophores in selected solvents reinforced the hypothesis of a viscosity-induced consistent increase of the (−)-sign handed CPL signals.
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48

Dee, Carolin, Francesco Zinna, Winald R. Kitzmann, Gennaro Pescitelli, Katja Heinze, Lorenzo Di Bari y Michael Seitz. "Strong circularly polarized luminescence of an octahedral chromium(iii) complex". Chemical Communications 55, n.º 87 (2019): 13078–81. http://dx.doi.org/10.1039/c9cc06909g.

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The chiral spin–flip luminophore [Cr(ddpd)2]3+ can be resolved into enantiopure material by chiral HPLC. The pure enantiomers display strong CPL activity for the corresponding near-IR phosphorescence.
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49

Ye, Qiang, Dandan Zhu, Hongxing Zhang, Xuemin Lu y Qinghua Lu. "Thermally tunable circular dichroism and circularly polarized luminescence of tetraphenylethene with two cholesterol pendants". Journal of Materials Chemistry C 3, n.º 27 (2015): 6997–7003. http://dx.doi.org/10.1039/c5tc00987a.

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50

Li, Meng, Hai-Yan Lu, Chao Zhang, Lin Shi, Zhiyong Tang y Chuan-Feng Chen. "Helical aromatic imide based enantiomers with full-color circularly polarized luminescence". Chemical Communications 52, n.º 64 (2016): 9921–24. http://dx.doi.org/10.1039/c6cc04674f.

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