Das, Atanu Kumar ; Mondal, Tridib ; Sen Mojumdar, Supratik ; Bhattacharyya, Kankan (2011) Marcus-like inversion in electron transfer in neat ionic liquid and ionic liquid-mixed micelles Journal of Physical Chemistry B, 115 (16). pp. 4680-4688. ISSN 1520-6106
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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp200941c
Related URL: http://dx.doi.org/10.1021/jp200941c
Abstract
Ultrafast photoinduced electron transfer (PET) from N,N-dimethylaniline (DMA) to coumarin dyes in a room-temperature ionic liquid (RTIL, [pmim][BF4]) and in a mixed micelle containing the RTIL and a triblock copolymer, (PEO)20-(PPO)70-(PEO)20, (Pluronic P123) is studied using femtosecond upconversion. A Marcus-like inversion in the rate of PET is observed in neat RTIL. This is attributed to high viscosity and nanostructuring of the RTIL. Diffusion and the rate of PET in the neat RTIL are slower than those in the RTIL-P123 mixed micelle. The coumarin dyes exhibit faster electron transfer and translational diffusion (anisotropy decay) in the RTIL-P123 mixed micelle compared to that in the P123 micelle.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 88960 |
| Deposited On: | 30 Mar 2012 07:07 |
| Last Modified: | 30 Mar 2012 07:07 |
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