Synthesis and optical properties of "branched" gold nanocrystals

被引：509

作者：

Hao, E ^{[1
]}

Bailey, RC ^{[1
]}

Schatz, GC ^{[1
]}

Hupp, JT ^{[1
]}

Li, SY ^{[1
]}

机构：

[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

来源：

NANO LETTERS | 2004年 / 4卷 / 02期

关键词：

D O I：

10.1021/nl0351542

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the synthesis of new "branched" gold nanocrystals in high yield (over 90%) via a wet-chemical route. The branched nanocrystals exhibit a shape-dependent plasmon resonance that is red-shifted by 130-180 nm from the spherical particle wavelength. Discrete dipole approximation (DDA) calculations qualitatively replicate the observed optical extinction spectra of the nanocrystals, indicating that the surface plasmon resonance is mainly determined by in-plane dipole excitation associated with the sharp tips.

引用

页码：327 / 330

页数：4

共 28 条

[1] Photochemically grown silver nanoparticles with wavelength-controlled size and shape
Callegari, A
Tonti, D
Chergui, M
[J]. NANO LETTERS, 2003, 3 (11) : 1565 - 1568
[2] Monopod, bipod, tripod, and tetrapod gold nanocrystals
Chen, SH
Wang, ZL
Ballato, J
Foulger, SH
Carroll, DL
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (52) : 16186 - 16187
[3] Synthesis of silver nanodisks using polystyrene mesospheres as templates
Hao, EC
Kelly, KL
Hupp, JT
Schatz, GC
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (51) : 15182 - 15183
[4] Hybrid nanorod-polymer solar cells
Huynh, WU
Dittmer, JJ
Alivisatos, AP
[J]. SCIENCE, 2002, 295 (5564) : 2425 - 2427
[5] Wet chemical synthesis of high aspect ratio cylindrical gold nanorods
Jana, NR
Gearheart, L
Murphy, CJ
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (19): : 4065 - 4067
[6] Electrodynamics of noble metal nanoparticles and nanoparticle clusters
Jensen, T
Kelly, L
Lazarides, A
Schatz, GC
[J]. JOURNAL OF CLUSTER SCIENCE, 1999, 10 (02) : 295 - 317
[7] Photoinduced conversion of silver nanospheres to nanoprisms
Jin, RC
Cao, YW
Mirkin, CA
Kelly, KL
Schatz, GC
Zheng, JG
[J]. SCIENCE, 2001, 294 (5548) : 1901 - 1903
[8] The optical properties of metal nanoparticles: The influence of size, shape, and dielectric environment
Kelly, KL
Coronado, E
Zhao, LL
Schatz, GC
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (03) : 668 - 677
[9] Photochemical synthesis of gold nanorods
Kim, F
Song, JH
Yang, PD
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (48) : 14316 - 14317
[10] Single-crystalline star-shaped nanocrystals and their evolution: Programming the geometry of nano-building blocks
Lee, SM
Jun, YW
Cho, SN
Cheon, J
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (38) : 11244 - 11245

← 1 2 3 →