BROWSE

Related Scientist

CSLM's photo.

CSLM
첨단연성물질 연구단
more info

ITEM VIEW & DOWNLOAD

Residence and diffusion of a dynamically prototropic hydration probe in AOT reverse micelles

Cited 0 time in webofscience Cited 0 time in scopus
17 Viewed 0 Downloaded
Title
Residence and diffusion of a dynamically prototropic hydration probe in AOT reverse micelles
Author(s)
Aniruddha Adhikari; Jae-Heon Park; Hak-Won Nho; Oh-Hoon Kwon
Subject
SOLVATION DYNAMICS, ; PROTON-TRANSFER, ; FLUORESCENCE DEPOLARIZATION, ; WATER, ; SIZE, ; SPECTRA, ; 7-HYDROXYQUINOLINE, ; COUMARIN-153, ; RELAXATION, ; ALCOHOL
Publication Date
2020-12-15
Journal
JOURNAL OF MOLECULAR LIQUIDS, v.320, pp.114346
Publisher
ELSEVIER
Abstract
We investigated the hydration dynamics in the nanosized water pool of an Aerosol-OT (AOT) reverse micelle (RM) using a prototropic (proton-donating) fluorescent dye, N-methyl-7-hydroxyquinolinium (NM7HQ(+)), as the probe. NM7HQ(+) is a photoacid, and the deprotonation of its excited-state cationic form (C*) gives rise to a neutral keto species (K*). In the present study, the residence sites of C* and K* in water pools of various sizes were determined by monitoring their time-resolved fluorescence anisotropy. Additionally, the evolutions of the C* and K* bands in the time-resolved fluorescence spectra were analyzed by fitting the spectra to the sum of two lognormal peak functions. The time-dependent spectral shifts of the species with different formal charges revealed the characteristic hydration behavior at the interface of the anionic AOT headgroups and the bound water region, as well as the rotational and translational diffusion of the probe within the RM. (C) 2020 Elsevier B.V. All rights reserved.
URI
https://pr.ibs.re.kr/handle/8788114/8439
DOI
10.1016/j.molliq.2020.114346
ISSN
0167-7322
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse