Log in

Relevant bibliographies by topics / Diphenyl carbazone / Journal articles

To see the other types of publications on this topic, follow the link: Diphenyl carbazone.

Journal articles on the topic 'Diphenyl carbazone'

Author: Grafiati

Published: 18 May 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Diphenyl carbazone.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Maniasso, Nelson, and Elias A. G. Zagatto. "Flow-injection spectrophotometric catalytic determination of manganese in plants exploiting the aerial oxidation of diphenyl carbazone." Analytica Chimica Acta 366, no. 1-3 (June 1998): 87–92. http://dx.doi.org/10.1016/s0003-2670(97)00682-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Kalogirou, Andreas S., and Panayiotis A. Koutentis. "5,5′-Bis[9-(2-ethylhexyl)-9H-carbazol-3-yl]-4,4′-diphenyl-2,2′-bithiazole." Molbank 2024, no. 1 (January 11, 2024): M1761. http://dx.doi.org/10.3390/m1761.

Full text

Abstract:

Stille coupling between 5,5′-dibromo-4,4′-diphenyl-2,2′-bithiazole and 9-(2-ethylhexyl)-3-(tributylstannyl)-9H-carbazole in the presence of Pd(Ph3P)2Cl2 in toluene, heated at reflux for 2 h, gave 5,5′-bis[9-(2-ethylhexyl)-9H-carbazol-3-yl]-4,4′-diphenyl-2,2′-bithiazole in 85% yield.

APA, Harvard, Vancouver, ISO, and other styles

3

Zhang, Zunting, Yang Kang, Rong Hou, Xiaoyan Min, Tao Wang, and Yong Liang. "An Oxidant- and Catalyst-Free Synthesis of Dibenzo[a,c]carbazoles via UV Light Irradiation of 2,3-Diphenyl-1H-indoles." Synthesis 54, no. 06 (October 23, 2021): 1621–32. http://dx.doi.org/10.1055/a-1677-4881.

Full text

Abstract:

AbstractAn efficient methodology for the synthesis of dibenzo[a,c]carbazoles via annulation of 2,3-diphenyl-1H-indoles in EtOH under UV light irradiation (λ = 365 nm) along with hydrogen evolution is described. This method exhibits the advantages of mild reaction conditions, no requirement of any oxidants and catalysts, and release of hydrogen as the only byproduct. Notably, the mechanism investigation confirms that the trans-4b,8a-dihydro-9H-dibenzo[a,c]carbazole intermediate could convert into cis-4b,8a-dihydro-9H-dibenzo[a,c]carbazole, which relies on the nitrogen atom of the indole ring. This is followed by intramolecular dehydrogenation which yields the dibenzo[a,c]carbazoles.

APA, Harvard, Vancouver, ISO, and other styles

4

Çiçek, Baki, Merve Çağlı, Remziye Tülek, and Ali Teke. "Synthesis and optical characterization of bipod carbazole derivatives." Heterocyclic Communications 26, no. 1 (October 18, 2020): 148–56. http://dx.doi.org/10.1515/hc-2020-0111.

Full text

Abstract:

AbstractIn this study, some new biscarbazole derivatives were synthesized for the purpose of being used in OLED technologies and related areas. The following compounds: {1,2-bis(2-(3,6-diphenyl-9H-carbazole-9-yl) ethoxy)ethane (C-1), bis[2-(2-(3,6- diphenyl-9H-carbazole-9-yl) ethoxy)etyl]ether (C-2), bis[2-(2-(3,6-di(naphthalene-1-yl)-9H-carbazol-9-yl)ethoxy)etyl]ether (C-3) and bis [2-(2-(3,6-di(naphthalene-2-yl)-9H-carbazol-9-yl)ethoxy) ethyl]ether (C-4) were synthesized by Suzuki-Miyaura Cross Coupling reactions. The structural properties of the synthesized compounds were characterized by FT-IR, 1H-NMR, 13C-NMR, and LC-MS. The maximum product yields of 81.6% were obtained for C-4 biscarbazole derivatives. The optical properties were studied using UV-visible and temperature/excitation power density dependent photoluminescence (PL) techniques. The emissions were observed at green and yellow-red color spectral bands. By applying Gaussian fitting to the measured spectra, the superposition of the broad peaks was deconvoluted into two peaks. The origin of emissions was attributed to π- π* transition in aromatic compounds caused by intramolecular charge transfer from host carbazole to these compounds.

APA, Harvard, Vancouver, ISO, and other styles

5

Guo, Huixia, Xiaohua Xi, Renxiang Yan, and Xiaoquan Lu. "Theoretical study on the effect of different π-linker on the performance of sensitizer in carbazole-based dyes." Journal of Theoretical and Computational Chemistry 17, no. 02 (March 2018): 1850019. http://dx.doi.org/10.1142/s0219633618500190.

Full text

Abstract:

Derived from diarylamine sensitizer diphenyl-(7-pyridin-4-yl-9H-carbazol-2-yl)-amine (N13), a series of novel D[Formula: see text]A carbazole-based organic dye sensitizers with different [Formula: see text]-linkers were designed for searching more effective sensitizers in dye-sensitized solar cells (DSSCs) design. Optimized geometries, electronic structure, and other parameters, which can evaluate the performance of DSSCs effectively and intuitively, were theoretically calculated by density functional theory (DFT) and time-dependent DFT methods at the M06/6-31G(d,p) level. The results indicated that the maximum absorption wavelength of designed dye was red-shifted and the molar absorption coefficient ([Formula: see text]) became higher. This phenomenon can be explained by the modification of the [Formula: see text]-bridge. The simulated Ultraviolet–visible spectroscopy (UV-Vis) absorption spectrum showed that the designed N,N-diphenyl-7-(5-(7-(5-(pyridin-4-yl)thiophen-2-yl)benzo[c][1,2,5]thiadiazol-4-yl)thiophen-2-yl)-9H-carbazol-2-amine (N22) dye presents the largest red-shifted absorption band and the designed (E)-N,N-diphenyl-7-(2-(5[Formula: see text]-(pyridin-4-yl)-[2,2[Formula: see text]-bithiophene]-5-yl)vinyl)-9H-carbazol-2-amine (N21) dye showed the largest [Formula: see text], both of them depicted a high short-circuit photocurrent density ([Formula: see text]. Meanwhile, the charge separation hampered by long [Formula: see text]-linkers was also observed. These results are helpful for designing new sensitizers and providing effective guiding to experimental synthesis.

APA, Harvard, Vancouver, ISO, and other styles

6

Xiao, Zhanhai, Yi Di, Zhifang Tan, Xudong Cheng, Bing Chen, and Jiwen Feng. "Efficient organic dyes based on perpendicular 6,12-diphenyl substituted indolo[3,2-b]carbazole donor." Photochemical & Photobiological Sciences 15, no. 12 (2016): 1514–23. http://dx.doi.org/10.1039/c6pp00286b.

Full text

Abstract:

Three novel indolo[3,2-b]carbazole-based dyes have been designed and synthesized using a 6,12-diphenyl substituted indolo[3,2-b]carbazole as a donor, a thiophene cyanoacrylic acid moiety as electron acceptor and anchoring group, together with triphenylamine, 3,4,5-trimethoxybenzene and bromine as a second donor.

APA, Harvard, Vancouver, ISO, and other styles

7

Zhang, Zhaohang, Wei Jiang, Xinxin Ban, Min Yang, Shanghui Ye, Bin Huang, and Yueming Sun. "Solution-processed efficient deep-blue fluorescent organic light-emitting diodes based on novel 9,10-diphenyl-anthracene derivatives." RSC Advances 5, no. 38 (2015): 29708–17. http://dx.doi.org/10.1039/c5ra00627a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Mekuskiene, Giedrute, Sigitas Tumkevicius, and Povilas Vainilavicius. "5-(4,6-Diphenyl-2-pyrimidinyl)-1,3,4-oxa(thia)diazoles and 1,2,4-triazoles." Journal of Chemical Research 2002, no. 5 (May 2002): 213–15. http://dx.doi.org/10.3184/030823402103171898.

Full text

Abstract:

Synthesis of 5-(4,6-diphenyl-2-pyrimidinyl)-1,3,4-oxa(thia)diazoles and corresponding 1,2,4-triazoles from 4,6-diphenyl-2-pyrimidinecarboxylic acid hydrazide and 1-(4,6-diphenyl-2-pyrimidinylcarbonyl)-4-phenylthiosemi-carbazide is described.

APA, Harvard, Vancouver, ISO, and other styles

9

Liu, Bei, Zheng Chen, Liming Lin, Yuntao Han, Jinhui Pang, and Zhenhua Jiang. "Synthesis and characterization of poly(arylene ether ketone)s with 3,6-diphenyl-9H-carbazole pendants using C–N coupling reaction." High Performance Polymers 29, no. 5 (June 29, 2016): 575–84. http://dx.doi.org/10.1177/0954008316655592.

Full text

Abstract:

3,6-Diphenyl-9 H-carbazole pendants are grafted herein to poly(arylene ether ketone)s (PAEKs) via the Ullmann C–N coupling reaction. To the best of our knowledge, this is the first time that PAEKs containing a carbazole pendant (Cz) have been synthesized through the Ullmann C–N coupling reaction. The high molecular weights of PAEK-Cz (PAEKs with 3,6-diphenyl-9 H-carbazole pendants) are inherited from their precursors, owing to the high reactivity of their monomers. The obtained PAEK-Cz- x polymers exhibit good solubility in most common organic solvents and excellent thermal stabilities, with the 5% weight loss temperatures for all products being above 598°C under a nitrogen atmosphere. The glass transition temperatures are all above 199°C and can be controlled by adjusting the feed ratio of monomers. The polymer membranes obtained by the casting method are tough and thus have strong potential for practical applications.

APA, Harvard, Vancouver, ISO, and other styles

10

Dhar, Abhishek, Nadavala Siva Kumar, Mohammad Asif, and Rohit L. Vekariya. "Fabrication of D–π–A sensitizers based on different donors substituted with a dihydropyrrolo[3,4-c]pyrrole-1,4-dione bridge for DSSCs: influence of the CDCA co-absorbent." New Journal of Chemistry 42, no. 14 (2018): 12024–31. http://dx.doi.org/10.1039/c8nj00847g.

Full text

Abstract:

The effect of co-absorbance on the performance of DSSC devices with a new design of dimer sensitizers possessing a 2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione (DPP) bridge and various donor groups (carbazole, diphenyl amine, indole) are reported in the present work.

APA, Harvard, Vancouver, ISO, and other styles

11

Muneer, Mohammed, Prashant V. Kamat, and Manapurathu V. George. "Electron transfer reactions. Reaction of nitrogen heterocycles with potassium." Canadian Journal of Chemistry 68, no. 6 (June 1, 1990): 969–75. http://dx.doi.org/10.1139/v90-152.

Full text

Abstract:

The results of our studies on potassium-induced transformations of some selected nitrogen heterocycles are presented. The substrates under investigation include 2,3-diphenylindole (1a), 2,3-diphenyl-1-methylindole (1b), 1,2,3-triphenylindole (1c), 2,3,4,5-tetraphenylpyrrole (5a), 1,2,3,5-tetraphenylpyrrole (5b), 1-benzyl-2,3,5-triphenylpyrrole (5c), 2,4,5-triphenyloxazole (15a), 4,5-diphenyl-2-methyloxazole (15b), 2,4-diphenyl-5-methyloxazole (15c), and 2,4,5-triphenylimidazole (19). Treatment of 1a with potassium in THF gave 9H-dibenzo[a,c]carbazole (3a), whereas 1c gave a mixture of 9-phenyl-9H-dibenzo-[a,c]carbazole (3c) and 2,3-diphenylindole (1a). Under identical conditions, 1b gave only the cleavage product 1a. In contrast, when the reactions of 1a,c were carried out with potassium in THF saturated with oxygen, and with potassium superoxide in benzene containing 18-crown-6, a mixture of 2-benzamidobenzophenone (4a), the carbazoles 3a,c, and 1a was formed. Although no product was isolated on treatment of 5a with potassium in THF, the reaction of 5a with potassium in THF saturated with oxygen gave a mixture of tetraphenylpyrazine (7a), the benzoylaminostilbene 8a, the lactam 12a, benzamide (11a), and benzoic acid (14). Similar results were obtained in the reaction of 5a with potassium superoxide. The reaction of N-substituted pyrroles such as 5b,c with potassium gave the NH pyrrole 9b in each case, whereas the reaction of 5b,c with potassium in THF, saturated with oxygen, gave a mixture of 9b, the butanone 10b, the 1,4-dione 13b, the lactam 12b, the amides 11a–c, and benzoic acid (14). Attempted reactions of 5b,c with potassium superoxide did not give any isolable product; most of the starting material could be recovered unchanged in each case. A mixture of N-(1,2-diphenylethyl)benzamide (18a) and benzoic acid (14) was formed in the reaction of the oxazole 15a with potassium, whereas 15b,c, under analogous conditions, gave the N-vinylamides 17b,c and benzoic acid (14). In contrast, treatment of the imidazole 19 with potassium in THF did not give any product; however, when the reaction of 19 was carried out with potassium in THF saturated with oxygen, and with potassium superoxide, dibenzamide (21) was isolated, in each case.Radical ions have been invoked as intermediates in the transformation of the different substrates to the observed products. Cyclic voltammetric studies have been carried out to measure the reduction potentials of these radical anion intermediates. These radical anions have also been generated by pulse radiolysis in methanol, and their absorption spectra recorded. Keywords: nitrogen heterocycles, radical ions, potassium-induced transformations, pulse radiolysis, cyclic voltammetry.

APA, Harvard, Vancouver, ISO, and other styles

12

LEE, SEUNG EUN, HYUN NAM CHO, SUNG HYUN JUNG, HO CHEOL PARK, CHANG JUNE LEE, and JONG WOOK PARK. "NOVEL SYNTHESIS OF HIGHLY PHENYL-SUBSTITUTED SPIROBIFLUORENE AND CARBAZOLE DERIVATIVES THROUGH DIELS–ALDER REACTION FOR LIGHT-EMITTING DIODES." Journal of Nonlinear Optical Physics & Materials 14, no. 04 (December 2005): 469–74. http://dx.doi.org/10.1142/s0218863505002906.

Full text

Abstract:

We synthesized and characterized novel highly phenyl-substituted spirobifluorene and carbazole derivatives such as 3,6-bis[(2,3,4,5-tetraphenyl)phenyl]-9-ethylcarbazole (BTPEC); 3,6-bis(7,10-diphenyl-fluoranthene)-9-ethylcarbazole (BDFEC); 2,7-Bis[(2,3,4,5-tetraphenyl)phenyl]-9,9′-spirobifluorene (BTPSF); and 3,6-bis(7,10-diphenyl-fluo-ran-thene)-9,9′-spirobifluorene (BDFSF), through Diels–Alder reaction. BDFEC showed sky blue PL spectrum at 481 nm and BTPSF showed ultra-violet PL spectrum at 374 nm in chloroform solution. Also BTPEC and BDFSF exhibited PL spectrum at around the UV region, 390 and 467 nm.

APA, Harvard, Vancouver, ISO, and other styles

13

Bezvikonnyi, Oleksandr, Ronit Sebastine Bernard, Viktorija Andruleviciene, Dmytro Volyniuk, Rasa Keruckiene, Kamile Vaiciulaityte, Linas Labanauskas, and Juozas Vidas Grazulevicius. "Derivatives of Imidazole and Carbazole as Bifunctional Materials for Organic Light-Emitting Diodes." Materials 15, no. 23 (November 29, 2022): 8495. http://dx.doi.org/10.3390/ma15238495.

Full text

Abstract:

New derivatives of carbazole and diphenyl imidazole for potential multiple applications were synthesized and investigated. Their properties were studied by thermal, optical, photophysical, electrochemical, and photoelectrical measurements. The compounds exhibited relatively narrow blue light-emission bands, which is favorable for deep-blue electroluminescent devices. The synthesized derivatives of imidazole and carbazole were tested as fluorescent emitters for OLEDs. The device showed deep-blue emissions with CIE color coordinates of (0.16, 0.08) and maximum quantum efficiency of 1.1%. The compounds demonstrated high triplet energy values above 3.0 eV and hole drift mobility exceeding 10−4 cm2/V·s at high electric fields. One of the compounds having two diphenyl imidazole moieties and tert-butyl-substituted carbazolyl groups showed bipolar charge transport with electron drift mobility reaching 10−4 cm2/V·s at electric field of 8 × 105 V/cm. The synthesized compounds were investigated as hosts for green, red and sky-blue phosphorescent OLEDs. The green-, red- and sky-blue-emitting devices demonstrated maximum quantum efficiencies of 8.3%, 6.4% and 7.6%, respectively.

APA, Harvard, Vancouver, ISO, and other styles

14

El-Kabbany, F., S. Talia, A. Shehap, and M. M. El-Naggar. "THERMOPLASTIC PHENOMENON IN REHEATED DIPHENYL CARBAZIDE C13H14N4O." Journal of Physics and Chemistry of Solids 59, no. 9 (September 1998): 1619–25. http://dx.doi.org/10.1016/s0022-3697(98)00060-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

El-Kabbany, F., S. Taha, A. Shehap, and M. M. El-Naggar. "Infrared spectroscopic characterization of aluminized diphenyl carbazide." Infrared Physics & Technology 40, no. 4 (August 1999): 295–303. http://dx.doi.org/10.1016/s1350-4495(99)00002-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Lim, Eunhee. "Synthesis and Characterization of Carbazole-Benzothiadiazole-Based Conjugated Polymers for Organic Photovoltaic Cells with Triazole in the Main Chain." International Journal of Photoenergy 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/607826.

Full text

Abstract:

We have synthesized a series of carbazole-benzothiadiazole-triazole based copolymers, poly[(N-9′-heptadecanyl-2,7-carbazole)-co-(5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole))-co-((4-(4-butylphenyl)-3,5-diphenyl-4H-1,2,4]triazole))] (PCz3TBTz) by Suzuki coupling polymerization. The optical and electrochemical properties of the copolymers could be tuned by changing the comonomer unit of triazole from 0% to 80%. Organic photovoltaic (OPV) cells were fabricated by blending the synthesized polymers as a donor and PCBM as an acceptor. The material solubility and film morphology were improved by introducing the triazole unit in the main chain. Improved OPV device performance of 1.74% was achieved in the presence of an optimal amount of triazole moieties.

APA, Harvard, Vancouver, ISO, and other styles

17

Aminah, Nanik S., Tin M. Thant, Alfinda N. Kristanti, Rico Ramadhan, Hnin T. Aung, and Yoshiaki Takaya. "Carbazomarin: A New Potential of α-Glucosidase Inhibitor From Clausena excavata Roots." Natural Product Communications 14, no. 12 (December 2019): 1934578X1989407. http://dx.doi.org/10.1177/1934578x19894076.

Full text

Abstract:

Continuing our exploration for dual functions antidiabetic and antioxidant agents from Myanmar medicinal plant , a new carbazole-pyranocoumarin conjugate, carbazomarin-C (1) along with a known carbazole alkaloid, mukonine (2) and a pyranocoumarin, xanthoxyletin (3), was isolated from the roots of Clausena excavata. The chemical structures of these compounds were identified using a combination of spectroscopic methods. Among isolates, there was a strong inhibition of compounds (1) and (3) on yeast α-glucosidase in a dose-dependent manner. It was shown when p-nitrophenyl-α-d-glucopyranoside was used as a substrate in vitro with IC50 values 0.22 and 4.81 mM, respectively. However, all isolated compounds displayed no inhibition against DPPH (2,2-diphenyl-1-picrylhydrazyl) radicals.

APA, Harvard, Vancouver, ISO, and other styles

18

Jo, Seunghyeon, Sangwook Park, Hyukmin Kwon, Hayoon Lee, Kiho Lee, and Jongwook Park. "Synthesis and Electrical Properties of a New Bipolar Material Using Spacer Moiety." Applied Sciences 14, no. 9 (April 24, 2024): 3593. http://dx.doi.org/10.3390/app14093593.

Full text

Abstract:

To develop a deep-blue emitter, a molecule with bipolar characteristics was designed as a donor-spacer-acceptor type, in which 9-(4-(4,6-diphenyl-1),3,5-triazin-2-yl)-2,5-dimethylphenyl)-9H-carbazole (DTPCZ)—with carbazole as an electron donating group and a diphenyl triazine moiety as an electron accepting group—was successfully synthesized. The photoluminescence (PL) maxima of DTPCZ were 421 nm in the solution state and 425 nm in the film state, indicating emission in the deep-blue region. DTPCZ also exhibited high thermal stability, with a degradation temperature of 349 °C. To confirm the electroluminescence (EL) characteristics, DTPCZ was applied as a dopant at 10, 20, and 30 wt% in a blue-fluorescent organic light-emitting diode (OLED) device. The highest efficiency was achieved using the 20 wt% doped device, with a current efficiency of 1.2 cd/A, an external quantum efficiency of 2.3%, and a Commission Internationale de l’Eclairage proceedings y-value of 0.06. Thus, deep-blue emission could be realized in the film state. These molecular design strategies can be applied to various fields, such as organic semiconductors.

APA, Harvard, Vancouver, ISO, and other styles

19

Shao, Pin, Zhen Li, Jingui Qin, Hongmei Gong, Sha Ding, and Ququan Wang. "New Heterocycle-Based Organic Molecule with Two-Photon Induced Blue Fluorescent Emission." Australian Journal of Chemistry 59, no. 1 (2006): 49. http://dx.doi.org/10.1071/ch05179.

Full text

Abstract:

A new heterocycle-based quadrupolar molecule containing 2,5-diphenyl-1,3,4-oxadiazole as the π-centre and two carbazoles as end units has been synthesized. It exhibits two-photon induced blue emission, and its two-photon absorption cross section in the femtosecond region is measured to be 239 × 10−50 cm4 s photon−1 at a wavelength of 788 nm.

APA, Harvard, Vancouver, ISO, and other styles

20

Huang, Bin, Wei Jiang, Yuan Yuan Liu, Ya An Zhang, Ya Ping Yang, Yu Dai, Xin Xin Ban, Huan Ge Xu, and Yue Ming Sun. "Thermally Activated Delayed Fluorescence Materials Based on Carbazole/Sulfone." Advanced Materials Research 1044-1045 (October 2014): 158–63. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.158.

Full text

Abstract:

A series of bipolar materials for thermally activated delayed fluorescence (TADF) based on carbazole and diphenylsulfone, is synthesized by Ulmann and Suzuki coupling reactions. In these materials, the 3,6-di-tert-butylcarbazole and N-phenylcarbazole group as donors are linked at the 3-, 4-position of diphenyl sulfone. The electronic, photophysical and electrochemical properties of these materials are studied by extensive UV-vis, fluorescence spectroscopic measurements, cyclic voltammetry as well as theoretical calculations. The energy gap between singlet and triplet (△EST) in these materials is tuned from 0.99 eV to 0.24 eV by changing the donor units and the positions of substitution.

APA, Harvard, Vancouver, ISO, and other styles

21

Hafez, Marwa, S. El-Sayed, and S. A. Sayed. "Spectroscopic Properties and Micro-Structure for Promising Solar Cell Application of Ruthenium-Diphenyl Carbazide (RuDPC) Complex." Key Engineering Materials 921 (May 30, 2022): 129–44. http://dx.doi.org/10.4028/p-xuf3fq.

Full text

Abstract:

The variation in the modes of a new ruthenium diphenyl carbazide complex (RuDPC) during changing of ruthenium (Ru) concentration within 0.01 ≤ X ≤ 0.09 in diphenyl carbazide (DPC) are investigated using IR analysis. Variation in some IR spectroscopic parameters during the increase of Ru content in pure DPC has been recorded. The variation in both the relaxation time and the rotational energy barrier for RuDPC samples at the mode 505 cm-1 supports a change that occurs at X ≈ 0.05. Micro-structure of RuDPC samples was studied by X-ray analysis and scanning electron microscopy. Moreover, SEM pictures and EDAX measurements were made revealing the strong Ru-signals indicating the presence of Ru and their distributions in the DPC matrix. Also results indicated that Ru inclusion in DPC matrix changes its morphology with a uniform distribution of Ru. Besides, X-ray diffraction patterns revealed RuDPC samples are represented by a mixture of amorphous and crystalline structure, wherever the phase-nature crystallization of RuDPC samples reinforced when the concentration of Ru is augmented. The crystal structure is changed to tetragonal structure after addition of ruthenium metal to pure orthorhombic DPC matrix. The spectroscopic properties of RuDPC complex is seemed to be dependent on its characteristics to the effect of radiation (FTIR), as a solar material in the application of this field; due to DPC is a photosensitive material, so that there are a number of optical applications which depend upon optically induced structure transition energy states for the complex.

APA, Harvard, Vancouver, ISO, and other styles

22

Bhasikuttan, A. C., D. K. Palit, A. V. Sapre, and J. P. Mittal. "Photophysical characteristics of diphenyl carbazide-laser flash photolysis and fluorescence studies." Chemical Physics Letters 316, no. 1-2 (January 2000): 67–74. http://dx.doi.org/10.1016/s0009-2614(99)01204-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

A. Hamdoon, Enam. "Indirect Spectrophotometric Determination of Mesalazine via Chromate-1,5-Diphenyl carbazide Complex." Rafidain Journal of Science 27, no. 2 (June 1, 2018): 69–78. http://dx.doi.org/10.33899/rjs.2018.145392.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Yamazoe, Atsushi, Osami Yagi, and Hiroshi Oyaizu. "Biotransformation of fluorene, diphenyl ether, dibenzo-p-dioxin and carbazole by Janibacter sp." Biotechnology Letters 26, no. 6 (March 2004): 479–86. http://dx.doi.org/10.1023/b:bile.0000019554.49484.40.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Silva Wakabayashi, Priscila Sayoko, Rodrigo da Costa Duarte, Luís Gustavo Teixeira Alves Duarte, Fabiano da Silveira Santos, Rodrigo Cercená, Eduardo Zapp, Fabiano Severo Rodembusch, and Alexandre Gonçalves Dal-Bó. "Synthesis and thermal, electrochemical, and photophysical investigation of carbazole/diphenyl benzothiadiazole-based fluorophores." Dyes and Pigments 182 (November 2020): 108668. http://dx.doi.org/10.1016/j.dyepig.2020.108668.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

El-Kabbany, F., S. Taha, F. M. Mansey, and A. Shehap. "Infrared study for the phase transition of re-heated diphenyl carbazide C13H14N4O." Infrared Physics & Technology 38, no. 3 (April 1997): 169–75. http://dx.doi.org/10.1016/s1350-4495(97)00004-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Shahroosvand, Hashem, Leyla Heydari, Sara Tarighi, Mohammadreza Riahi, Babak Nemati Bideh, and Babak Pashaei. "Aqueous dye-sensitized solar cell based on new ruthenium diphenyl carbazide complexes." International Journal of Hydrogen Energy 42, no. 26 (June 2017): 16421–27. http://dx.doi.org/10.1016/j.ijhydene.2017.04.222.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Tang, Huaijun, Zhiguo Zhang, Changjie Cong, and Keli Zhang. "Synthesis of a novel β-diketone containing carbazole and 2,5-diphenyl-1,3,4-oxadiazole fragments." Russian Journal of Organic Chemistry 45, no. 4 (April 2009): 559–63. http://dx.doi.org/10.1134/s1070428009040150.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Krupashankar, D. S., and M. Shakthi Rathna. "Absence of Chromates in Detergents in India Confirmed by Diphenyl Carbazide Spot Test." Dermatitis 20, no. 6 (November 2009): 351–52. http://dx.doi.org/10.2310/6620.2009.09033.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

El-Kabbany, F., S. Taha, and M. Hafez. "A kinetic investigation and X-ray analysis of thermal shrinkage of diphenyl carbazide." Thermochimica Acta 510, no. 1-2 (October 2010): 122–25. http://dx.doi.org/10.1016/j.tca.2010.07.005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

El-Kabbany, F., S. Taha, M. Hafez, and N. R. Abdel Aziz. "Infrared study and phase transformation of the new lithium–diphenyl carbazide complex (LiDPC)." Journal of Molecular Structure 1092 (July 2015): 113–21. http://dx.doi.org/10.1016/j.molstruc.2015.03.015.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Borse, Tushar H., Vijay L. Maheshwari, and Manisha P. Baviskar. "Effect of Diphenyl Carbazide on the Metribuzin Induced Inhibition of Photosystem-II Photochemistry." Journal of Plant Biochemistry and Biotechnology 9, no. 2 (July 2000): 119–21. http://dx.doi.org/10.1007/bf03263097.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Liu, Gang, Der-Jang Liaw, Wei-Yi Lee, Qi-Dan Ling, Chun-Xiang Zhu, D. Siu-Hung Chan, En-Tang Kang, and Koon-Gee Neoh. "Tristable electrical conductivity switching in a polyfluorene–diphenylpyridine copolymer with pendant carbazole groups." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 367, no. 1905 (October 28, 2009): 4203–14. http://dx.doi.org/10.1098/rsta.2008.0262.

Full text

Abstract:

Tristable electrical conductivity switching and non-volatile memory effects are demonstrated in a conjugated copolymer of poly(2,6-diphenyl-4-((9-ethyl)-9 H -carbazole)-pyridinyl- alt -2,7-(9,9-didodecyl)-9 H -fluorenyl) (PPCzPF). The indium–tin oxide (ITO)/PPCzPF/Al device can be switched from the low-conductivity (off) state to the first high-conductivity (on-1) state at 1.8 V, with an on/off current ratio of approximately 100. The device can be further switched from the on-1 state to the next higher conductivity (on-2) state at 2.4 V, with an on-2/on-1 current ratio of approximately 20. All the three conductivity states are accessible, stable and non-erasable. The tri-level conductance switching can be explained in terms of field-induced conformational ordering of the polymer chains and enhanced charge-transfer interaction at the PPCzPF/ITO interface.

APA, Harvard, Vancouver, ISO, and other styles

34

Rassi, Salwa Fares. "Preparation and Charactreization Selective Electrode for Determination of CopperIon(II)." Journal of Electrochemical Science and Engineering 5, no. 4 (February 16, 2016): 237. http://dx.doi.org/10.5599/jese.236.

Full text

Abstract:

<span>Achemically modified carbon paste electrode with diphenyl carbazide the potentiometric determination of Cu(II) is demonstrated. The electrode exhibits linear response to Cu(II) over a wide concentration range (9.2×10−7-5.0×10−1) with Nernstian slope of 30±0.15 mV per decade. It has a response time of about 40 s and can be used for a period of two months with good reproducibility. The detection limit of this electrode was 7.0×10−7 M. The proposed electrode shows a very good selectivity for Cu(II) over a wide variety of metal ions. This chemically modified carbon paste electrode was successfully used for the determination of Cu(II) in various water samples solution and pharmaceutical formulation</span>

APA, Harvard, Vancouver, ISO, and other styles

35

Kremser, Gabriele, Oliver T. Hofmann, Stefan Sax, Stefan Kappaun, Emil J. W. List, Egbert Zojer, and Christian Slugovc. "Synthesis and Photophysical Properties of 3,6-Diphenyl-9-hexyl-9H-carbazole Derivatives Bearing Electron Withdrawing Groups." Monatshefte für Chemie - Chemical Monthly 139, no. 3 (February 12, 2008): 223–31. http://dx.doi.org/10.1007/s00706-007-0774-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Brendle, James J., Abram Outlaw, Arvind Kumar, David W. Boykin, Donald A. Patrick, Richard R. Tidwell, and Karl A. Werbovetz. "Antileishmanial Activities of Several Classes of Aromatic Dications." Antimicrobial Agents and Chemotherapy 46, no. 3 (March 2002): 797–807. http://dx.doi.org/10.1128/aac.46.3.797-807.2002.

Full text

Abstract:

ABSTRACT Aromatic dicationic molecules possess impressive activity against a broad spectrum of microbial pathogens, including Pneumocystis carinii, Cryptosporidium parvum, and Candida albicans. In this work, 58 aromatic cations were examined for inhibitory activity against axenic amastigote-like Leishmania donovani parasites. In general, the most potent of the compounds were substituted diphenyl furan and thiophene dications. 2,5-Bis-(4-amidinophenyl)thiophene was the most active compound. This agent displayed a 50% inhibitory concentration (IC50) of 0.42 ± 0.08 μM against L. donovani and an in vitro antileishmanial potency 6.2-fold greater than that of the clinical antileishmanial dication pentamidine and was 155-fold more toxic to the parasites than to a mouse macrophage cell line. 2,4-Bis-(4-amidinopheny)furan was twice as active as pentamidine (IC50, 1.30 ± 0.21 μM), while 2,5-bis-(4-amidinopheny)furan and pentamidine were essentially equipotent in our in vitro antileishmanial assay. Carbazoles, dibenzofurans, dibenzothiophenes, and benzimidazoles containing amidine or substituted amidine groups were generally less active than the diphenyl furans and thiophenes. In all cases, aromatic dications possessing strong antileishmanial activity were severalfold more toxic to the parasites than to a cultured mouse macrophage cell line. These structure-activity relationships demonstrate the potent antileishmanial activity of several aromatic dications and provide valuable information for the future design and synthesis of more potent antiparasitic agents.

APA, Harvard, Vancouver, ISO, and other styles

37

Zheng, Yanan, Jinnan Huo, Shu Xiao, Heping Shi, Dongge Ma, and Ben Zhong Tang. "Synthesis, photoluminescence and electroluminescence properties of a new blue emitter containing carbazole, acridine and diphenyl sulfone units." Organic Electronics 101 (February 2022): 106411. http://dx.doi.org/10.1016/j.orgel.2021.106411.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Chang, Yufei, Yuliang Wu, Kaiyuan Zhang, Shumeng Wang, Xingdong Wang, Shiyang Shao, and Lixiang Wang. "1,8-diphenyl-carbazole-based boron, sulfur-containing multi-resonance emitters with suppressed aggregation emission for narrowband OLEDs." Dyes and Pigments 220 (December 2023): 111678. http://dx.doi.org/10.1016/j.dyepig.2023.111678.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

El-Kabbany, F., S. Taha, and M. Hafez. "A study of the phase transition of reheated diphenyl carbazide (DPC) by using UV spectroscopy." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 128 (July 2014): 481–88. http://dx.doi.org/10.1016/j.saa.2014.02.143.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Sivakumar, K., T. Stalin, and N. Rajendiran. "Dual fluorescence of diphenyl carbazide and benzanilide: Effect of solvents and pH on electronic spectra." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 62, no. 4-5 (December 2005): 991–99. http://dx.doi.org/10.1016/j.saa.2005.04.033.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Studzinsky, S. L. "Photoconductive, photovoltaic and information properties of new carbazole-based oligomeric film compositions doped with 2,2-diphenyl-1-picrylhydrazyl." Molecular Crystals and Liquid Crystals 639, no. 1 (November 2016): 126–36. http://dx.doi.org/10.1080/15421406.2016.1255043.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

SUN Jun, 孙军, 张玉祥 ZHANG Yu-xiang, 赵卫华 ZHAO Wei-hua, 张宏科 ZHANG Hong-ke, 何海晓 HE Hai-xiao, and 田密 TIAN Mi. "Highly Efficient Red Electrophosphorescent Devices Based on 7-(9H-carbazol-9-yl)-N,N-diphenyl-9,9′-spirobi［fluoren］-2-amine Host Material." Chinese Journal of Luminescence 35, no. 3 (2014): 327–31. http://dx.doi.org/10.3788/fgxb20143503.0327.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Gajghate, D. G., E. R. Saxena, and A. L. Aggarwal. "Removal of chromium (VI) as chromium diphenyl carbazide (CDC) complex from aqueous solution by activated carbon." Water, Air, & Soil Pollution 65, no. 3-4 (November 1992): 329–37. http://dx.doi.org/10.1007/bf00479896.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Mei, Xiaofei, Kexi Wei, Guixiu Wen, Zhengde Liu, Zhenghuan Lin, Zhonggao Zhou, Limei Huang, E. Yang, and Qidan Ling. "Carbazole-based diphenyl maleimides: Multi-functional smart fluorescent materials for data process and sensing for pressure, explosive and pH." Dyes and Pigments 133 (October 2016): 345–53. http://dx.doi.org/10.1016/j.dyepig.2016.06.015.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Al-Abachi, Mouayed Q., and E. S. Salih. "Indirect spectrophotometric method for the microdetermination of chlorine or bromine in organic compounds using 1,5-diphenyl carbazide." Analyst 112, no. 4 (1987): 485. http://dx.doi.org/10.1039/an9871200485.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Meng, Ze-Da, Lei Zhu, Kefayat Ullah, Shu Ye, and Won-Chun Oh. "Detection of oxygen species generated by WO3 modification fullerene/TiO2 in the degradation of 1,5-diphenyl carbazide." Materials Research Bulletin 56 (August 2014): 45–53. http://dx.doi.org/10.1016/j.materresbull.2014.04.033.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Kulkarni, Preeti S., Pinak G. Deshmukh, Alok P. Jakhade, Sunil D. Kulkarni, and Rajeev C. Chikate. "1,5 diphenyl carbazide immobilized cross-linked chitosan films: An integrated approach towards enhanced removal of Cr(VI)." Journal of Molecular Liquids 247 (December 2017): 254–61. http://dx.doi.org/10.1016/j.molliq.2017.09.122.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Woo, Jeongkyu, Soo Kyung Kang, Ju Hee Han, Ki Ju Kim, Yu Ji Moon, Young Kwan Kim, and Seung Soo Yoon. "Red Phosphorescent Platinum(II) Complexes with Tetradentate Pyridine-Containing Ligands for Organic Light Emitting Diodes." Journal of Nanoscience and Nanotechnology 20, no. 11 (November 1, 2020): 6669–74. http://dx.doi.org/10.1166/jnn.2020.18758.

Full text

Abstract:

Here, red phosphorescent platinum(II) complexes based on tetradentate pyridine-containing lig-ands are studied. To investigate their electroluminescent properties, multilayer devices were fabricated in the following sequence; ITO (180 nm)/4,4′,4″-Tris[2-naphthyl(phenyl)amino]triphenylamine (2-TNATA) (30 nm)/N, N′-di(1-naphthyl)-N,N′-diphenyl-1,1′-biphenyl)4,4′-diamine (NPB) (20 nm)/ Tris(4-carbazoyl-9-ylphenyl)amine (TCTA) (10 nm)/4,4′-Bis(N-carbazolyl)-1,1′-biphenyl (CBP) (20 nm)/Platinum(II) complex (20 nm)/1,3,5-Tris(1-Phenyl-1H-benzimidazol-2-yl)benzene) (TPBi) (40 nm)/Liq (2 nm)/Al (100 nm). In particularly, a device using platinum(II) complex based on N-(3,5-di-tert-butylphenyl)-3-(pyridin-2-yl)-N-(3-(pyridin-2-yl)phenyl)benzenamineligand showed the efficient red emission, with a luminous efficiency, power efficiency, and external quantum efficiency of, and the Commission International de LEclairge (CIE) coordinates of 27.26 cd/A, 10.54 lm/W, 8.50% at 20 mA/cm2, and (0.65, 0.33) at 11.0 V, respectively.

APA, Harvard, Vancouver, ISO, and other styles

49

Kang, Soo Kyung, Jeongkyu Woo, Ju Hee Han, Ki Ju Kim, Hakjun Lee, Young Kwan Kim, and Seung Soo Yoon. "Platinum (II) Complexes Based on Tetradentate Pyridine-Containing Ligands for Phosphorescent Organic Light-Emitting Diodes." Journal of Nanoscience and Nanotechnology 20, no. 11 (November 1, 2020): 6683–87. http://dx.doi.org/10.1166/jnn.2020.18774.

Full text

Abstract:

In this study, we designed and synthesized two phosphorescent emitting materials based on tetradentate pyridine-containing ligands. Their photophysical properties were examined for OLEDs and multilayer devices using these materials were fabricated in the following sequence; ITO (180 nm)/4,4′,4″-Tris[2-naphthyl(phenyl)amino]triphenylamine (2-TNATA) (30 nm)/N,N′-di(1-naphthyl)-N,N′-diphenyl-1,1′-biphenyl)4,4′-diamine (NPB) (20 nm)/Tris(4-carbazoyl-9-ylphenyl)amine (TCTA) (10 nm)/4,4′-Bis(N-carbazolyl)-1,1′-biphenyl(CBP): 5, 8, 15% Platinum (II) complexes (20 nm)/1,3,5-Tris(1-Phenyl-1H-benzimidazol-2-yl)benzene) (TPBi) (40 nm)/Liq (2 nm)/Al (100 nm). In particularly, a device using Platinum (II) complex based on A/-(3,5-di-tert-butylphenyl)-6-phenyl-N-(6-phenylpyridin-2-yl)pyridin-2-amine ligand showed the efficient emission, with luminous efficiency, power efficiency, and external quantum efficiency, and the Commission International de LEclairge (CIE) coordinates of 29.29 cd/A, 9.37 lm/W, 8.66% at 20 mA/cm2, and (0.32, 0.62) at 8.0 V, respectively.

APA, Harvard, Vancouver, ISO, and other styles

50

Rahnama, Reyhaneh, Elaheh Shafiei, and Mohammad Reza Jamali. "Preconcentration of Copper Using 1,5-Diphenyl Carbazide as the Complexing Agent via Dispersive Liquid-Liquid Microextraction and Determination by Flame Atomic Absorption Spectrometry." Journal of Chemistry 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/962365.

Full text

Abstract:

We report a simple and sensitive microextraction system for the preconcentration and determination of Cu (II) by flame atomic absorption spectrometry (FAAS). Dispersive liquid-liquid microextraction is a modified solvent extraction method and its acceptor-to-donor phase ratio is greatly reduced compared with other methods. In the proposed approach, 1,5-diphenyl carbazide (DPC) was used as a copper ion selective complexing agent. Several variables such as the extraction and dispersive solvent type and volume, pH of sample solution, DPC concentration, extraction time, and ionic strength were studied and optimized for a quantitative preconcentration and determination of copper (II) and at the optimized conditions: 60 μL, 0.5 mL, and 5 mL of extraction solvent (chloroform), disperser solvent (ethanol), and sample volume, respectively, a linear calibration graph was obtained over the concentration range of 10–200 μg L−1for Cu (II) withR2= 0.9966. The limit of detection (3Sb/m), and preconcentration factor are 2 μg L−1and 25, respectively. The relative standard deviation (n=10) at 100 μg L−1of Cu (II) is 2.5%. The applicability of the developed technique was evaluated by application to spiked environmental water samples.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!