Aqueous sols of oligo(ethylene glycol) surface decorated polydiacetylene vesicles for colorimetric detection of Pb2+

被引：43
作者：
Narkwiboonwong, Pat [2 ]
Turncharern, Gamolwan [3 ]
Potisatityuenyong, Anupat [1 ]
Wacharasindhu, Sumrit [1 ]
Sukwattanasinitt, Mongkol [1 ]
机构：
[1] Chulalongkorn Univ, Fac Sci, Dept Chem, Organ Synth Res Unit, Bangkok 10330, Thailand
[2] Chulalongkorn Univ, Fac Sci, Program Petrochem & Polymer Sci, Bangkok 10330, Thailand
[3] Natl Sci & Technol Dev Agcy, Natl Nanotechnol Ctr, Pathum Thani 12120, Thailand
来源：
TALANTA | 2011年 / 83卷 / 03期
关键词：
Conjugated polymer; Liposome; Self-assembly; Sensor; Lead; Polydiacetylene; Thermochromism; LEAD-ION; MOLECULAR RECOGNITION; CHROMATIC TRANSITION; GOLD NANOPARTICLES; CONJUGATED POLYMER; SENSOR; MEMBRANE; DNAZYME; ACID; THERMOCHROMISM;
D O I：
10.1016/j.talanta.2010.10.054
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A series of ethylene glycol (EG), triethylene glycol (3EG) and pentaethylene glycol (5EG) esters of 10,12-pentacosadiynoic acid (PCDA) are synthesized. The glycol ester lipids can be hydrated and well dispersed in water but they cannot form polydiacetylenes upon UV irradiation. They however can be mixed with PCDA up to 30 mol% and polymerized to form blue sols. The mixed polydiacetylene sols show blue to red thermochromic transition with two-stepped transition temperatures. The first transition temperature decreases with the increase of the glycol ester content as well as the length of their chains indicating greater fluidity of the self-assembled structure due to less collaborative hydrogen bonding among the lipid head groups. These mixed polydiacetylene sol prepared from 30 mol% of the penta(ethylene glycol) ester show linear colorimetric response selectively to Pb2+ in the range of 5-30 mu M. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：872 / 878
页数：7
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