Inclusion and Charge Transfer Interaction of a Multi-Redox Active 1,3,5-Triazine Derivative by Cucurbit[7,8]urils

2020 ◽  
Vol 86 (1) ◽  
pp. 1178-1182
Author(s):  
Arumugam Thangavel
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Interaction ◽  
Triazine Derivative ◽  
Redox Active

scholarly journals A redox-active ionic liquid manifesting charge-transfer interaction between a viologen and carbazole and its effect on the viscosity, ionic conductivity, and redox process of the viologen

2021 ◽  
Author(s):  
Hironobu Tahara ◽  
Yudai Tanaka ◽  
Shoko Yamamoto ◽  
Shigeki Yonemori ◽  
Bun Chan ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Charge Transfer ◽  
Ionic Conductivity ◽  
Physicochemical Properties ◽  
Redox Process ◽  
Charge Transfer Interaction ◽  
Redox Active ◽  
The Individual

A redox-active ionic liquid (RAIL) consisting of a carbazole and viologen shows charge transfer (CT) interaction. The physicochemical properties are modulated by the CT interaction by comparison with the individual RAILs.

Fluorescence Quenching of Aminodiphenylamines with Chloromethanes

2002 ◽  
Vol 67 (8) ◽  
pp. 1154-1164 ◽  
Author(s):  
Nachiappan Radha ◽  
Meenakshisundaram Swaminathan
Keyword(s):  
Charge Transfer ◽  
Fluorescence Quenching ◽  
Ground State ◽  
Rate Constants ◽  
Quenching Mechanism ◽  
Quenching Rate ◽  
Charge Transfer Interaction ◽  
Electronically Excited ◽  
A Charge

The fluorescence quenching of 2-aminodiphenylamine (2ADPA), 4-aminodiphenylamine (4ADPA) and 4,4'-diaminodiphenylamine (DADPA) with tetrachloromethane, chloroform and dichloromethane have been studied in hexane, dioxane, acetonitrile and methanol as solvents. The quenching rate constants for the process have also been obtained by measuring the lifetimes of the fluorophores. The quenching was found to be dynamic in all cases. For 2ADPA and 4ADPA, the quenching rate constants of CCl4 and CHCl3 depend on the viscosity, whereas in the case of CH2Cl2, kq depends on polarity. The quenching rate constants for DADPA with CCl4 are viscosity-dependent but the quenching with CHCl3 and CH2Cl2 depends on the polarity of the solvents. From the results, the quenching mechanism is explained by the formation of a non-emissive complex involving a charge-transfer interaction between the electronically excited fluorophores and ground-state chloromethanes.

Enantioselective Nucleophilic Aromatic Substitution Reaction of Azlactones to Synthesize Quaternary α-Amino Acid Derivatives

Synlett ◽  
2020 ◽  
Author(s):  
Xiaohua Liu ◽  
Yi Li ◽  
Hao Pan ◽  
Wang-Yuren Li ◽  
Xiaoming Feng
Keyword(s):  
Hydrogen Bonding ◽  
Charge Transfer ◽  
Amino Acid ◽  
Substitution Reaction ◽  
Nucleophilic Aromatic Substitution ◽  
Amino Acid Derivatives ◽  
Amino Acid Esters ◽  
Aromatic Substitution ◽  
Charge Transfer Interaction ◽  
Acid Esters

AbstractAn asymmetric organocatalytic nucleophilic aromatic substitution reaction of azlactones with electron-deficient aryls was established. A variety of α-aryl α-alkyl α-amino acid esters and peptides were obtained in decent yields and stereoselectivities. A new bifunctional catalytic mode involving charge-transfer interaction and hydrogen bonding is proposed to explain the enantioselectivity.

scholarly journals Color-tunable arylaminoanthraquinone dyes through hydrogen-bond-assisted charge transfer interaction

RSC Advances ◽  
2021 ◽  
Vol 11 (39) ◽  
pp. 24217-24231
Author(s):  
Takashi Takeda ◽  
Yotaro Kasahara ◽  
Tomoyuki Akutagawa
Keyword(s):  
Hydrogen Bond ◽  
Charge Transfer ◽  
Charge Transfer Interaction ◽  
Color Tunable

A color-tunable anthraquinone library based on arylaminoanthraquinone was prepared through hydrogen-bond-assisted charge transfer interaction.

Dendritic Metalloporphyrin-Fullerene Conjugates: Changing the Microenvironment around Redox-Active Centers and its Impact on Charge-Transfer Reactions

2012 ◽  
Vol 18 (33) ◽  
pp. 10427-10435 ◽  
Author(s):  
Evangelos Krokos ◽  
Fabian Spänig ◽  
Michaela Ruppert ◽  
Andreas Hirsch ◽  
Dirk M. Guldi
Keyword(s):  
Charge Transfer ◽  
Transfer Reactions ◽  
Active Centers ◽  
Redox Active ◽  
Charge Transfer Reactions

scholarly journals Intramolecular Charge-transfer Interaction in Substituted Diphenylmethanes

1973 ◽  
Vol 46 (11) ◽  
pp. 3614-3615 ◽  
Author(s):  
Hiroyasu Inoue ◽  
Yoichiro Mikami ◽  
Toshiji Yokotani
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Charge Transfer Interaction
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