Amino Acid-Functionalized Polyfluorene as a Water-Soluble Hg2+ Chemosensor with High Solubility and High Photoluminescence Quantum Yield

被引：61

作者：

Qin, Chuanjiang ^{[1
,2
]}

Wu, Xiaofu ^{[1
,2
]}

Gao, Baoxiang ^{[3
]}

Tong, Hui ^{[1
]}

Wang, Lixiang ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

[3] Hebei Univ, Coll Chem & Environm Sci, Baoding 071002, Peoples R China

来源：

MACROMOLECULES | 2009年 / 42卷 / 15期

基金：

中国国家自然科学基金;

关键词：

SINGLE-STRANDED-DNA; CONJUGATED POLYMERS; OPTICAL-DETECTION; ENERGY-TRANSFER; MERCURY IONS; FLUORESCENT; POLYELECTROLYTES; PROTEINS; SENSOR; POLYTHIOPHENE;

D O I：

10.1021/ma9009998

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 novel water soluble polyfluorene (PFA) with two anionic L-aspartic acids in its side chains of every repeat fluorene units has been reported. Water soluble conjugated polyelectrolytes (CPE) are conjugated polymers fictionalized with multiple ionic groups. CPE's are used to detect opposite ionic species in water solutions as fluorescence sensors. the chelating behavior of DFA H NMR titration of DFA with Hg2+ was carrier out in D2O solution. PFA is also a highly sensitive, selective, and reversible sensory material for Hg2+ in buffer aqueous solution. PFA is a conjugated polyelectrolyte with an extremely high solubility in water and high PL quantum yield are comparable to those of typical polyfluorenes in organic solvents at the same time. Low cost and easy synthesis of this water-soluble fluorescence polymer and the robust aqueous detection condition make this system good candidate for the development of applicable mercury sensors.

引用

页码：5427 / 5429

页数：3

共 45 条

[1] Highly sensitive biological and chemical sensors based on reversible fluorescence quenching in a conjugated polymer [J].

Chen, LH ;

McBranch, DW ;

Wang, HL ;

Helgeson, R ;

Wudl, F ;

Whitten, DG .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1999, 96 (22) :12287-12292

[2] Signal ratio amplification via modulation of resonance energy transfer: Proof of principle in an emission ratiometric Hg(II) sensor [J].

Coskun, Ali ;

Akkaya, Engin U. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (45) :14474-14475

[3]

Ego C., 2006, J AM CHEM SOC, V128, P14422

[4] High-efficiency fluorescence quenching of conjugated polymers by proteins [J].

Fan, CH ;

Plaxco, KW ;

Heeger, AJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (20) :5642-5643

[5] DNA hybridization detection with water-soluble conjugated polymers and chromophore-labeled single-stranded DNA [J].

Gaylord, BS ;

Heeger, AJ ;

Bazan, GC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (04) :896-900

[6] Synthesis and properties of a novel water-soluble anionic polyfluorenes for highly sensitive biosensors [J].

Huang, F ;

Wang, XH ;

Wang, DL ;

Yang, W ;

Cao, Y .

POLYMER, 2005, 46 (25) :12010-12015

[7] Modulating the sensory response of a conjugated polymer by proteins: An agglutination assay for mercury ions in water [J].

Kim, IB ;

Bunz, UHF .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (09) :2818-2819

[8] Sensing of lead ions by a carboxylate-substituted PPE: Multivalency effects [J].

Kim, IB ;

Dunkhorst, A ;

Gilbert, J ;

Bunz, UHF .

MACROMOLECULES, 2005, 38 (11) :4560-4562

[9] A fluorescent self-amplifying wavelength-responsive sensory polymer for fluoride ions [J].

Kim, TH ;

Swager, TM .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2003, 42 (39) :4803-4806

[10] Blue-light-emitting cationic water-soluble polyfluorene derivatives with tunable quaternization degree [J].

Liu, B ;

Yu, WL ;

Lai, YH ;

Huang, W .

MACROMOLECULES, 2002, 35 (13) :4975-4982

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