EPR study of a place-exchange reaction on Au nanoparticles: Two branches of a disulfide molecule do not adsorb adjacent to each other

被引：83
作者：
Ionita, P
Caragheorgheopol, A
Gilbert, BC
Chechik, V
机构：
[1] Romanian Acad, Inst Chem Phys IG Murgulescu, Bucharest 77208, Romania
[2] Univ York, Dept Chem, York YO10 5DD, N Yorkshire, England
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2002年 / 124卷 / 31期
关键词：
D O I：
10.1021/ja0265456
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An EPR study of a place-exchange reaction of a diradical disulfide with butanethiol-protected Au nanoparticles showed that the two branches of the disulfide molecule do not adsorb adjacent to each other on the Au surface. The most likely mechanism includes adsorption of only one branch of the disulfide molecule in the exchange process. The exchange reaction was found to be zeroth-order with respect to the diradical, indicative of a dissociative "SN1"-type mechanism. Copyright © 2002 American Chemical Society.
引用
收藏
页码：9048 / 9049
页数：2
相关论文
共 10 条
[1]  
BRIERE R, 1965, B SOC CHIM FR, P3290
[2]   SYNTHESIS OF THIOL-DERIVATIZED GOLD NANOPARTICLES IN A 2-PHASE LIQUID-LIQUID SYSTEM [J].
BRUST, M ;
WALKER, M ;
BETHELL, D ;
SCHIFFRIN, DJ ;
WHYMAN, R .
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1994, (07) :801-802
[3]   Dynamics of place-exchange reactions on monolayer-protected gold cluster molecules [J].
Hostetler, MJ ;
Templeton, AC ;
Murray, RW .
LANGMUIR, 1999, 15 (11) :3782-3789
[4]   THEORY OF ESR LINEWIDTHS OF FREE RADICALS [J].
KIVELSON, D .
JOURNAL OF CHEMICAL PHYSICS, 1960, 33 (04) :1094-1106
[5]   Synthesis and characterization of hydrophobic, organically-soluble gold nanocrystals functionalized with primary amines [J].
Leff, DV ;
Brandt, L ;
Heath, JR .
LANGMUIR, 1996, 12 (20) :4723-4730
[6]   Formation of gold colloids using thioether derivatives as stabilizing ligands [J].
Li, XM ;
de Jong, MR ;
Inoue, K ;
Shinkai, S ;
Huskens, J ;
Reinhoudt, DN .
JOURNAL OF MATERIALS CHEMISTRY, 2001, 11 (07) :1919-1923
[7]  
Noh J, 2000, LANGMUIR, V16, P2045, DOI 10.1021/1a9914231
[8]   MECHANISM OF SPIN EXCHANGE IN LONG-CHAIN NITROXIDE BIRADICALS [J].
PARMON, VN ;
KOKORIN, AI ;
ZHIDOMIROV, GM ;
ZAMARAEV, KI .
MOLECULAR PHYSICS, 1975, 30 (03) :695-701
[9]   Gateway reactions to diverse, polyfunctional monolayer-protected gold clusters [J].
Templeton, AC ;
Hostetler, MJ ;
Warmoth, EK ;
Chen, SW ;
Hartshorn, CM ;
Krishnamurthy, VM ;
Forbes, MDE ;
Murray, RW .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (19) :4845-4849
[10]   Monolayer protected cluster molecules [J].
Templeton, AC ;
Wuelfing, MP ;
Murray, RW .
ACCOUNTS OF CHEMICAL RESEARCH, 2000, 33 (01) :27-36
1