Ultrafast time-resolved photoluminescence from novel metal-dendrimer nanocomposites

被引：122

作者：

Varnavski, O

Ispasoiu, RG

Balogh, L

Tomalia, D

Goodson, T ^{[1
]}

机构：

[1] Wayne State Univ, Dept Chem, Detroit, MI 48202 USA

[2] Univ Michigan, Sch Med, Ctr Biol Nanotechnol, Ann Arbor, MI 48109 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2001年 / 114卷 / 05期

关键词：

D O I：

10.1063/1.1344231

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：

We report the first results of ultra-fast enhanced light emission from gold- and silver-dendrimer nanocomposites. There is a fast (70 fs) fluorescence decay component associated with the metal nanocomposites. Anisotropy measurements show that this fast component is depolarized. The enhanced emission is suggestively due to local field enhancement in the elongated metal-dendrimer nanoparticles. (C) 2001 American Institute of Physics.

引用

收藏

页码：1962 / 1965

页数：4

相关论文

共 25 条

[1] Poly(amidoamine) dendrimer-templated nanocomposites. 1. Synthesis of zerovalent copper nanoclusters [J].

Balogh, L ;

Tomalia, DA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (29) :7355-7356

[2] Dendrimer-metal nanocomposites [J].

Balogh, L ;

Laverdure, KS ;

Gido, SP ;

Mott, AG ;

Miller, MJ ;

Ketchel, BP ;

Tomalia, DA .

ORGANIC/INORGANIC HYBRID MATERIALS II, 1999, 576 :69-75

[3] Formation of silver and gold dendrimer nanocomposites [J].

Balogh, Lajos ;

Valluzzi, Regina ;

Laverdure, Kenneth S. ;

Gido, Samuel P. ;

Hagnauer, Gary L. ;

Tomalia, Donald A. .

JOURNAL OF NANOPARTICLE RESEARCH, 1999, 1 (03) :353-368

[4] Electron dynamics in metallic nanoparticles [J].

Bigot, JY ;

Halté, V ;

Merle, JC ;

Daunois, A .

CHEMICAL PHYSICS, 2000, 251 (1-3) :181-203

[5] ELECTRON DYNAMICS IN COPPER METALLIC NANOPARTICLES PROBED WITH FEMTOSECOND OPTICAL PULSES [J].

BIGOT, JY ;

MERLE, JC ;

CREGUT, O ;

DAUNOIS, A .

PHYSICAL REVIEW LETTERS, 1995, 75 (25) :4702-4705

[6] ANALYSIS OF FLUORESCENCE DECAY KINETICS BY METHOD OF LEAST-SQUARES [J].

GRINVALD, A ;

STEINBER.IZ .

ANALYTICAL BIOCHEMISTRY, 1974, 59 (02) :583-598

[7] Dendrimer templates for the formation of gold nanoclusters [J].

Gröhn, F ;

Bauer, BJ ;

Akpalu, YA ;

Jackson, CL ;

Amis, EJ .

MACROMOLECULES, 2000, 33 (16) :6042-6050

[8] NONLINEAR SPECTROSCOPY AND PICOSECOND TRANSIENT GRATING STUDY OF COLLOIDAL GOLD [J].

HEILWEIL, EJ ;

HOCHSTRASSER, RM .

JOURNAL OF CHEMICAL PHYSICS, 1985, 82 (11) :4762-4770

[9] Ultrafast study of electron-phonon coupling in colloidal gold particles [J].

Hodak, J ;

Martini, I ;

Hartland, GV .

CHEMICAL PHYSICS LETTERS, 1998, 284 (1-2) :135-141

[10]

Kreibig U, 1999, PHYS STATUS SOLIDI A, V175, P351, DOI 10.1002/(SICI)1521-396X(199909)175:1<351::AID-PSSA351>3.0.CO