Substituent Effect on Intramolecular Charge Transfer of Symmetric Methoxy-Substituted Bi-1,3,4-oxadiazole Derivatives

2017 ◽  
Vol 121 (44) ◽  
pp. 8399-8407 ◽  
Author(s):  
Fangyi Chen ◽  
Wanxi Zhang ◽  
Taiji Tian ◽  
Binglian Bai ◽  
Haitao Wang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Substituent Effect ◽  
Intramolecular Charge Transfer ◽  
Oxadiazole Derivatives

Solvatochromic and quantum chemical investigations of newly synthesized succinimides: substituent effect on intramolecular charge transfer

2013 ◽  
Vol 144 (10) ◽  
pp. 1525-1535 ◽  
Author(s):  
Nebojša Banjac ◽  
Nemanja Trišović ◽  
Željko Vitnik ◽  
Vesna Vitnik ◽  
Nataša Valentić ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Quantum Chemical ◽  
Substituent Effect ◽  
Intramolecular Charge Transfer

Synthesis and Optical Properties of Asymmetric Naphthylmethylene 1,3,4-Oxadiazole Derivatives

2014 ◽  
Vol 1033-1034 ◽  
pp. 1109-1113
Author(s):  
Ting Feng Tan ◽  
Bian Peng Wu ◽  
Li Gang Bai ◽  
Yan Xia Li ◽  
Ming Jie Zhang
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Fluorescence Spectroscopy ◽  
Fluorescence Intensity ◽  
Absorption Maximum ◽  
Intramolecular Charge Transfer ◽  
Bathochromic Shift ◽  
Transfer Effect ◽  
Uv Absorption ◽  
Oxadiazole Derivatives

Asymmetric 2-p-nitrophenyl-5-naphthylmethylene-1,3,4-oxadiazole and 2-p-aminophenyl-5-naphthylmethylene-1,3,4-oxadiazole were synthesized and characterized by IR、1HNMR and MS analysis, and their optical properties were detected using UV-vis absorption spectroscopy and fluorescence spectroscopy. The existence of electron-withdrawing oxadiazole units causes a significant bathochromic shift of the UV absorption maximum. The largest UV-absorption peak of target compounds is in the range of 298-317 nm, and a new emission band at 402 nm is formed. The fluorescence intensity is gradually enhanced, which strengthens the intramolecular charge transfer effect between the electron-withdrawing oxadiazole and electron-donating aniline.

Analysis of solvent and substituent effects on uv and visible spectra of N-(α-methylarylidene)-p-(N′,N′-dimethylamino)-anilines

1985 ◽  
Vol 63 (11) ◽  
pp. 3256-3257
Author(s):  
Piotr Milart ◽  
Tadeusz M. Krygowski
Keyword(s):  
Charge Transfer ◽  
Solvent Effect ◽  
Substituent Effect ◽  
Intramolecular Charge Transfer ◽  
Substituent Effects ◽  
Wave Band ◽  
Hammett Equation ◽  
Long Wave ◽  
Visible Spectra

Substituent effect on the long wave band in uv/vis spectra of p-substituted N-(α-methylarylidene)-p-(N′,N′-dimethylamino)-anilines (X = CH3O, CH3, H, Cl, and NO2) measured in eight solvents follows well the Hammett equation. Solvent effect on this band depends well on ET only for Cl- and NO2-substituted species. Both these findings support the conclusion that the long-wave band is in fact intramolecular charge transfer form the basicity center [Formula: see text] towards substituents.

scholarly journals Enhancement of intramolecular charge transfer strength in diphenylamine substituted symmetric 1,3,4-oxadiazole derivatives

RSC Advances ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Fangyi Chen ◽  
Wanxi Zhang ◽  
Zijian Liu ◽  
Lingyan Meng ◽  
Binglian Bai ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Benzene Ring ◽  
Intramolecular Charge Transfer ◽  
Oxadiazole Derivatives

Introduction of a central benzene ring could increase the charge transferred distance, and further contribute to the enhancement of the intramolecular charge transfer strength.

The effect of molecular structure on intramolecular charge-transfer in 1,3,4-oxadiazole derivatives

2019 ◽  
Vol 377 ◽  
pp. 309-317 ◽  
Author(s):  
Lingyan Meng ◽  
Fangyi Chen ◽  
Fu-Quan Bai ◽  
Binglian Bai ◽  
Haitao Wang ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Oxadiazole Derivatives

scholarly journals Solvent and substituent effect on intramolecular charge transfer in 5-arylidene-3-substituted-2,4-thiazolidinediones: Experimental and theoretical study

2019 ◽  
Vol 12 (8) ◽  
pp. 5142-5161 ◽  
Author(s):  
Milica P. Rančić ◽  
Ivana Stojiljković ◽  
Milena Milošević ◽  
Nevena Prlainović ◽  
Maja Jovanović ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Substituent Effect ◽  
Theoretical Study ◽  
Intramolecular Charge Transfer

Dynamic adjustment of emission from both singlets and triplets: the role of excited state conformation relaxation and charge transfer in phenothiazine derivates

2021 ◽  
Author(s):  
Weidong Qiu ◽  
Xinyi Cai ◽  
Mengke Li ◽  
Liangying Wang ◽  
Yanmei He ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Dynamic Adjustment ◽  
Twisted Intramolecular Charge Transfer

Dynamic adjustment of emission behaviours by controlling the extent of twisted intramolecular charge transfer character in excited state.

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