Screening and enrichment of metal nanoparticles with novel optical properties

被引：204

作者：

Emory, SR ^{[1
]}

Nie, S ^{[1
]}

机构：

[1] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1998年 / 102卷 / 03期

关键词：

D O I：

10.1021/jp9734033

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 rapid screening and enrichment method is reported for exploring the size and shape diversities (libraries) of nanometer-scale colloidal particles. With the use of surface-enhanced Raman scattering, a new class of metal nanoparticles has been identified from heterogeneous silver colloids. These particles are relatively large, faceted nanocrystals that are able to enhance the efficiencies of surface optical processes by as much as 14-15 orders of magnitude. The population of these novel nanoparticles is only about 0.1-1% in standard colloid preparations but can be enriched to about 10-15% by size-selective fractionation. This new class of nanoparticles could find potential uses in optoelectronic devices, ultrasensitive chemical sensors, and single-molecule detection.

引用

收藏

页码：493 / 497

页数：5

相关论文

共 32 条

[11] Photoluminescence spectroscopy of single CdSe nanocrystallite quantum dots [J].

Empedocles, SA ;

Norris, DJ ;

Bawendi, MG .

PHYSICAL REVIEW LETTERS, 1996, 77 (18) :3873-3876

[12] PHOTOCHEMISTRY OF COLLOIDAL SEMICONDUCTORS .30. HPLC INVESTIGATION OF SMALL CDS PARTICLES [J].

FISCHER, CH ;

WELLER, H ;

KATSIKAS, L ;

HENGLEIN, A .

LANGMUIR, 1989, 5 (02) :429-432

[13]

FISCHER CH, 1989, BER BUNSEN PHYS CHEM, V93, P64

[14] Ag-clad Au nanoparticles: Novel aggregation, optical, and surface-enhanced Raman scattering properties [J].

Freeman, RG ;

Hommer, MB ;

Grabar, KC ;

Jackson, MA ;

Natan, MJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (02) :718-724

[15] SELF-ASSEMBLED METAL COLLOID MONOLAYERS - AN APPROACH TO SERS SUBSTRATES [J].

FREEMAN, RG ;

GRABAR, KC ;

ALLISON, KJ ;

BRIGHT, RM ;

DAVIS, JA ;

GUTHRIE, AP ;

HOMMER, MB ;

JACKSON, MA ;

SMITH, PC ;

WALTER, DG ;

NATAN, MJ .

SCIENCE, 1995, 267 (5204) :1629-1632

[16] Nuclear spectroscopy in single quantum dots: Nanoscopic Raman scattering and nuclear magnetic resonance [J].

Gammon, D ;

Brown, SW ;

Snow, ES ;

Kennedy, TA ;

Katzer, DS ;

Park, D .

SCIENCE, 1997, 277 (5322) :85-88

[17] Excited states of individual quantum dots studied by photoluminescence spectroscopy [J].

Hessman, D ;

Castrillo, P ;

Pistol, ME ;

Pryor, C ;

Samuelson, L .

APPLIED PHYSICS LETTERS, 1996, 69 (06) :749-751

[18] SURFACE-ENHANCED RESONANCE RAMAN-SPECTROSCOPY OF RHODAMINE-6G ADSORBED ON COLLOIDAL SILVER [J].

HILDEBRANDT, P ;

STOCKBURGER, M .

JOURNAL OF PHYSICAL CHEMISTRY, 1984, 88 (24) :5935-5944

[19] An approach to electrical studies of single nanocrystals [J].

Klein, DL ;

McEuen, PL ;

Katari, JEB ;

Roth, R ;

Alivisatos, AP .

APPLIED PHYSICS LETTERS, 1996, 68 (18) :2574-2576

[20] Single molecule detection using surface-enhanced Raman scattering (SERS) [J].

Kneipp, K ;

Wang, Y ;

Kneipp, H ;

Perelman, LT ;

Itzkan, I ;

Dasari, R ;

Feld, MS .

PHYSICAL REVIEW LETTERS, 1997, 78 (09) :1667-1670

← 1 2 3 4 →