Photoinduced electron transfer (PET) from N,N-dimethylanilineto 7-amino Coumarin dyes in a room temperature ionic liquid (RTIL): Slowing down of electron transfer rate compared to conventional solvent

被引：30

作者：

Sarkar, Souravi ^{[1
]}

Pramanik, Rajib ^{[1
]}

Seth, Debabrata ^{[1
]}

Setua, Palash ^{[1
]}

Sarkar, Nilmoni ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Kharagpur 721302, W Bengal, India

来源：

CHEMICAL PHYSICS LETTERS | 2009年 / 477卷 / 1-3期

关键词：

WAVELENGTH-DEPENDENT FLUORESCENCE; DONOR-ACCEPTOR SYSTEMS; SOLVATION DYNAMICS; SOLUTE ROTATION; FREE-ENERGY; RELAXATION; MARCUS; POLAR; MOLECULES; DIFFUSION;

D O I：

10.1016/j.cplett.2009.06.077

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this Letter we have investigated the photoinduced electron transfer (PET) in a protic room temperature ionic liquid (PRTIL) comprised of non-aromatic cation and anion, N,N-dimethyl ethanol ammonium formate (DAF) to investigate how the dynamics of PET is affected in RTIL compared to other solvents. The photoinduced electron transfer rate in the ionic liquid DAF decreases by an order of magnitude upon going from the conventional solvent acetonitrile. We have observed saturation, i.e., a Rehm-Weller type of behaviour in the electron transfer rate. The ET rate (k(q)) vs. -Lambda G(0) plot shows saturation to a diffusion-controlled value at the higher exergonicity region. (c) 2009 Elsevier B. V. All rights reserved.

引用

页码：102 / 108

页数：7

共 5 条

[1] Photoinduced electron transfer reaction in polymer-surfactant aggregates:: Photoinduced electron transfer between N,N-dimethylaniline and 7-amino coumarin dyes
Chakraborty, Anjan
Seth, Debabrata
Setua, Palash
Sarkar, Nilmoni
JOURNAL OF CHEMICAL PHYSICS, 2008, 128 (20):
[2] Photoinduced electron transfer from N,N-dimethylaniline to 7-amino Coumarins in protein-surfactant complex:: Slowing down of electron transfer dynamics compared to micelles -: art. no. 074512
Chakraborty, A
Seth, D
Setua, P
Sarkar, N
JOURNAL OF CHEMICAL PHYSICS, 2006, 124 (07):
[3] Photoinduced intermolecular electron transfer from dimethyl aniline to 7-amino Coumarin dyes in the surface of β-cyclodextrin
Chakraborty, Anjan
Seth, Debabrata
Chakrabarty, Debdeep
Sarkar, Nilmoni
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 2006, 64 (03) : 801 - 808
[4] Photoinduced electron transfer between coumarin dyes and N,N-dimethylaniline in imidazolium based room temperature ionic liquids: Effect of the cation's alkyl chain length on the bimolecular photoinduced electron transfer process
Yuan, Shuwei
Zhang, Ying
Lu, Rong
Yu, Anchi
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2013, 260 : 39 - 49
[5] What Determines the Rate of Excited-State Intramolecular Electron-Transfer Reaction of 4-(N,N′-dimethylamino)benzonitrile in Room Temperature Ionic Liquids? A Study in [bmim][PF6]
Santhosh, Kotni
Samanta, Anunay
CHEMPHYSCHEM, 2012, 13 (07) : 1956 - 1961

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