Fluorescence turn-on chemical sensor based on water-soluble conjugated polymer/single-walled carbon nanotube composite

被引：4

作者：

Adachi, Naoya ^{[1
]}

Okada, Mari ^{[1
]}

Sugeno, Masafumi ^{[1
]}

Norioka, Takayuki ^{[1
]}

机构：

[1] Tokyo Denki Univ, Sch Sci & Engn, Div Sci, Hatoyama, Saitama 3500394, Japan

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2016年 / 133卷 / 15期

关键词：

composites; conducting polymers; graphene and fullerenes; nanotubes; optical properties; photochemistry; POLY(PHENYLENE ETHYNYLENE); HELIX FORMATION; ELECTROLUMINESCENCE; SEPARATION; COMPLEXES; CHEMISTRY; POLYMERS; MODES; FILM;

D O I：

10.1002/app.43301

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A chemical sensor for methyl viologen (MV2+), based on a water-soluble conjugated polymer/single-walled carbon-nanotube (SWNT) composite, was fabricated. Water-soluble poly(m-phenylene ethynylene) with sulfonic acid side-chain groups (mPPE-SO3) was synthesized via a Pd-catalyzed Sonogashira coupling reaction and used to prepare a highly stable mPPE-SO3/SWNT composite with strong - interactions in water. The relationship between the optical properties and sensing capability of the mPPE-SO3/SWNT composite in aqueous solution was investigated. The addition of MV2+ enhanced the fluorescence intensity of the mPPE-SO3/SWNT composite by inducing a conformational change of the polymer from a helical to a random-coil structure. The water-soluble mPPE-SO3/SWNT composite enabled highly sensitive fluorescence detection of MV2+ in aqueous solutions with no precipitation resulting from reaggregation of the SWNTs. This mPPE-SO3/SWNT composite sensor system is therefore an effective turn-on chemical sensor for MV2+. (C) 2016 Wiley Periodicals, Inc.

引用

页数：7

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