Role of solvation dynamics in the kinetics of solvolysis reactions in microreactors

文献情報

出版日 2009-07-15

DOI 10.1039/B905573H

インパクトファクター 3.676

著者

Pramod Kumar Verma, Abhinanadan Makhal, Rajib Kumar Mitra, Samir Kumar Pal

原文を見る

要旨

In this contribution we attempt to correlate the dynamical states of water molecules in reverse micelles with a solvolysis reaction in accordance with the activation energy barrier crossing model at the micellar interface. Precise measurement of the different dynamical states of water molecules at the reverse micellar interface with various degrees of hydration is achieved through temperature-dependent solvation dynamics of coumarin 523. The rotational anisotropy studies along with a wobbling-in-cone analysis show that the probe residing at the micellar interface pointing towards the core water experiences less microviscosity at elevated temperature. The consequences of the dynamical freedom of the water at elevated temperature in the solvolysis reaction of benzoyl chloride have also been explored. The accelerated rate of solvolysis has been correlated with the increased solvation dynamics, both of which are associated with a temperature-induced transition of bound to free type water molecules at the micellar interface.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

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