Remarkable influence of silver islands on the enhancement of fluorescence from Eu3+ ion-doped silica gels

被引：162

作者：

Selvan, ST ^{[1
]}

Hayakawa, T ^{[1
]}

Nogami, M ^{[1
]}

机构：

[1] Nagoya Inst Technol, Dept Mat Sci & Engn, Showa Ku, Nagoya, Aichi 4668555, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1999年 / 103卷 / 34期

关键词：

D O I：

10.1021/jp9902755

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：

A simple methodology has been developed to enable a greater enhancement of fluorescence from europium (Eu3+)-doped silica gels containing adsorbed silver (Ag) islands. The procedure involves the preparation of Eu3+-doped silica gels by a sol-gel method and then immersion in a Ag sol for ca. 48 h to allow the adsorption of Ag islands on the pore surfaces of silica gels. UV-vis spectra show the characteristic surface plasmon resonance of the Ag at around 390 nm, and transmission electron microscopy (TEM) presents Ag islandlike particles on the surface of silica gels. The photoluminescence studies reveal the fact that the enhanced fluorescence originates from the local field enhancement around EU3+ ions, caused by the electronic plasmon resonance of the Ag islands.

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页码：7064 / 7067

页数：4

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共 44 条

[1] Shape-controlled synthesis of colloidal platinum nanoparticles [J].

Ahmadi, TS ;

Wang, ZL ;

Green, TC ;

Henglein, A ;

ElSayed, MA .

SCIENCE, 1996, 272 (5270) :1924-1926

[2] SURFACE-ENHANCED RAMAN-SPECTROSCOPY USING PHOTODEPOSITED GOLD PARTICLES IN POROUS SOL-GEL SILICATES [J].

AKBARIAN, F ;

DUNN, BS ;

ZINK, JI .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (12) :3892-3894

[3] Novel amphiphilic block copolymers by polymer reactions and their use for solubilization of metal salts and metal colloids [J].

Antonietti, M ;

Forster, S ;

Hartmann, J ;

Oestreich, S .

MACROMOLECULES, 1996, 29 (11) :3800-3806

[4] NEAR-SURFACE NUCLEATION AND CRYSTALLIZATION OF AN ION-IMPLANTED LITHIA-ALUMINA-SILICA GLASS [J].

ARNOLD, GW .

JOURNAL OF APPLIED PHYSICS, 1975, 46 (10) :4466-4473

[5] THE NATURE OF THE SILICA CAGE AS REFLECTED BY SPECTRAL CHANGES AND ENHANCED PHOTOSTABILITY OF TRAPPED RHODAMINE-6G [J].

AVNIR, D ;

LEVY, D ;

REISFELD, R .

JOURNAL OF PHYSICAL CHEMISTRY, 1984, 88 (24) :5956-5959

[6] Convenient preparation of stable, narrow-dispersity, gold nanocrystals by ligand exchange reactions [J].

Brown, LO ;

Hutchison, JE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (50) :12384-12385

[7] ABSORPTION-SPECTRA, ENERGY DISPERSIVE ANALYSIS OF X-RAYS AND TRANSMISSION ELECTRON-MICROSCOPY OF SILVER PARTICLES IN SOL-GEL GLASS-FILMS [J].

BRUSILOVSKY, D ;

EYAL, M ;

REISFELD, R .

CHEMICAL PHYSICS LETTERS, 1988, 153 (2-3) :203-209

[8] NOVEL GOLD-DITHIOL NANO-NETWORKS WITH NONMETALLIC ELECTRONIC-PROPERTIES [J].

BRUST, M ;

BETHELL, D ;

SCHIFFRIN, DJ ;

KIELY, CJ .

ADVANCED MATERIALS, 1995, 7 (09) :795-&

[9]

CHAN YNC, 1992, J AM CHEM SOC, V114, P7295

[10] Reversible tuning of silver quantum dot monolayers through the metal-insulator transition [J].

Collier, CP ;

Saykally, RJ ;

Shiang, JJ ;

Henrichs, SE ;

Heath, JR .

SCIENCE, 1997, 277 (5334) :1978-1981

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