Amplified fluorescence quenching of self-assembled polyelectrolyte-dye nanoparticles in aqueous solution

被引：20

作者：

Chen, Jiangshan ^{[1
]}

Dong, Wen-Fei ^{[2
,3
]}

Mohwald, Helmuth ^{[1
]}

Krastev, Rumen ^{[1
]}

机构：

[1] Max Planck Inst Colloids & Interfaces, Dept Interfaces, D-14424 Potsdam, Germany

[2] Univ Tokyo, Dept Mat Engn, Grad Sch Engn, Tokyo 1138656, Japan

[3] Univ Tokyo, Ctr NanoBio Integrat, Tokyo 1138656, Japan

来源：

CHEMISTRY OF MATERIALS | 2008年 / 20卷 / 05期

关键词：

D O I：

10.1021/cm071678h

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Amplified fluorescence quenching of self-assembled polyelectrolyte-dye nanoparticles in aqueous solutions was demonstrated. Atomic force microscopy, transmission electron microscopy, and confocal laser scanning microscope (CLSM) were used to confirm the morphology of the polyelectrolyte-dye aggregates. The self aggregation of the PAH:PSA complex was then investigated by light scattering measurement and the complexes demonstrated increased scattering intensity. It was found that the ionic complexes of PAH:PSA can self-aggregate to nanoparticles in dilute aqueous solution, driven by the electrostatic interaction of ion pairs and during the spontaneous self-assembly, the confinement of pyrene molecules results in the fluorescence of excimer that can be efficiently and selectively quenched by anionic quencher AQS2-.

引用

页码：1664 / 1666

页数：3

共 45 条

[1] Fluorescence superquenching of conjugated polyelectrolytes: applications for biosensing and drug discovery [J].

Achyuthan, KE ;

Bergstedt, TS ;

Chen, L ;

Jones, RM ;

Kumaraswamy, S ;

Kushon, SA ;

Ley, KD ;

Lu, L ;

McBranch, D ;

Mukundan, H ;

Rininsland, F ;

Shi, X ;

Xia, W ;

Whitten, DG .

JOURNAL OF MATERIALS CHEMISTRY, 2005, 15 (27-28) :2648-2656

[2] Fluorescence studies of the binding of anionic derivatives of pyrene and fluorescein to cationic polyelectrolytes in aqueous solution [J].

Caruso, F ;

Donath, E ;

Mohwald, H ;

Georgieva, R .

MACROMOLECULES, 1998, 31 (21) :7365-7377

[3] 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

[4] Tuning the properties of conjugated polyelectrolytes through surfactant complexation [J].

Chen, LH ;

Xu, S ;

McBranch, D ;

Whitten, D .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (38) :9302-9303

[5] NEW NANOCOMPOSITE FILMS FOR BIOSENSORS - LAYER-BY-LAYER ADSORBED FILMS OF POLYELECTROLYTES, PROTEINS OR DNA [J].

DECHER, G ;

LEHR, B ;

LOWACK, K ;

LVOV, Y ;

SCHMITT, J .

BIOSENSORS & BIOELECTRONICS, 1994, 9 (9-10) :677-684

[6] Molecular materials by self-assembly of porphyrins, phthalocyanines, and perylenes [J].

Elemans, Johannes A. A. W. ;

Van Hameren, Richard ;

Nolte, Roeland J. M. ;

Rowan, Alan E. .

ADVANCED MATERIALS, 2006, 18 (10) :1251-1266

[7] 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

[8] Beyond superquenching: Hyper-efficient energy transfer from conjugated polymers to gold nanoparticles [J].

Fan, CH ;

Wang, S ;

Hong, JW ;

Bazan, GC ;

Plaxco, KW ;

Heeger, AJ .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2003, 100 (11) :6297-6301

[9] Synthesis, characterization, and fluorescence quenching of novel cationic phenyl-substituted poly(p-phenylenevinylene)s [J].

Fan, QL ;

Lu, S ;

Lai, YH ;

Hou, XY ;

Huang, W .

MACROMOLECULES, 2003, 36 (19) :6976-6984

[10] Ionic self-assembly: Facile synthesis of supramolecular materials [J].

Faul, CFJ ;

Antonietti, M .

ADVANCED MATERIALS, 2003, 15 (09) :673-683

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