Constrained photophysics of partially and fully encapsulated charge transfer probe (E)-3-(4-Methylaminophenyl) acrylic acid methyl ester inside cyclodextrin nano-cavities: Evidence of cyclodextrins cavity dependent complex stoichiometry

被引：7

作者：

Ghosh, Shalini ^{[1
]}

Jana, Sankar ^{[1
]}

Guchhait, Nikhil ^{[1
]}

机构：

[1] Univ Calcutta, Dept Chem, Kolkata 700009, India

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2011年 / 84卷 / 01期

关键词：

MAPAME; Cyclodextrins; Nano-cavity; Fluorescence; Benesi-Hildebrand plot; Fluorescence anisotropy; BETA-CYCLODEXTRIN; FLUORESCENCE; NANOCAVITY;

D O I：

10.1016/j.saa.2011.09.038

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The polarity sensitive intra-molecular charge transfer (ICT) emission from (E)-3-(4-Methylaminophenyl) acrylic acid methyl ester (MAPAME) is found to show distinct changes once introduced into the nano-cavities of cyclodextrins in aqueous environment. Movement of the molecule from the more polar aqueous environment to the less polar, hydrophobic cyclodextrin interior is marked by the blue shift of the CT emission band with simultaneous fluorescence intensity enhancement. The emission spectral changes on complexation with the alpha- and beta-CD show different stoichiometries as observed from the Benesi-Hildebrand plots. Fluorescence anisotropy and lifetime measurements were performed to probe the different behaviors of MAPAME in aqueous a- and beta-CD solutions. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：249 / 255

页数：7

共 20 条

[1]

Bender M.L., 1978, Cyclodextrin chemistry

[2]

Benesi M. L., 1949, J AM CHEM SOC, V71, P2703, DOI DOI 10.1021/JA01176A030

[3] Inclusion complex of charge transfer probe 4-amino-3-methyl benzoic acid methyl ester (AMBME) with β-CD in aqueous and non-aqueous medium:: medium dependent stoichiometry of the complex and orientation of probe molecule inside β-CD nanocavity [J].