標題: A fully-aqueous red-fluorescent probe for selective optical sensing of Hg2+ and its application in living cells
作者: Pola, Murali Krishna
Raju, Mandapati V. Ramakrishnam
Lin, Chein-Ming
Putikam, Raghunath
Lin, Ming-Chang
Epperla, Chandra Prakash
Chang, Huan-Cheng
Chen, San-Yuan
Lin, Hong-Cheu
材料科學與工程學系
應用化學系
Department of Materials Science and Engineering
Department of Applied Chemistry
關鍵字: Aqueous medium;Push-pull chromophore;ICT;Living cell
公開日期: 七月-2016
摘要: A new red-fluorescent mercury ion sensor material is designed and synthesized, which is composed of at weezer-shaped hydrophilic probe containing bifurcated soft-base atoms N and S coupled with 2-dicyanomethylene-3-cyano-4,5,5-trimethyl-2,5-dihydrofuran (TCF) unit. By virtue of the strong electron-accepting nature of TCF unit (as a push pull chromophore), this designed sensor material can selectively detect Hg2+ over various tested metal ions in a 100% aqueous medium via naked-eye and photoluminescence (PL) observations. Theoretical and time-resolved photoluminescence measurements further confirmed the selectivity and reversibility of the probe towards Hg2+ via intramolocular charge transfer mechanism in this sensor material. Moreover, the living cell tests by confocal fluorescence images of this sensor material towards Hg2+ were also investigated. Finally, distinguished absorption changes and fluorescence quenching spectral appearances allowed us to present the selective optical indicator of Hg2+ via TCF moiety for the first time. (C) 2016 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.dyepig.2016.03.028
http://hdl.handle.net/11536/133909
ISSN: 0143-7208
DOI: 10.1016/j.dyepig.2016.03.028
期刊: DYES AND PIGMENTS
Volume: 130
起始頁: 256
結束頁: 265
顯示於類別:期刊論文