Alkyl Chains of Surface Ligands Affect Polytypism of CdSe Nanocrystals and Play an Important Role in the Synthesis of Anisotropic Nanoheterostructures

被引：113
作者：
Huang, Jing [1 ]
Kovalenko, Maksym V. [1 ]
Talapin, Dmitri V. [1 ,2 ]
机构：
[1] Univ Chicago, Dept Chem, Chicago, IL 60637 USA
[2] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 45期
基金：
美国国家科学基金会;
关键词：
SELF-ASSEMBLED MONOLAYERS; SEEDED-GROWTH; QUANTUM DOTS; NANOPARTICLES; NANORODS; SHAPE; SEMICONDUCTORS; MONODISPERSE; NANOWIRES; BINDING;
D O I：
10.1021/ja105132u
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We show that the length of the alkyl chain of surface ligands can shift the equilibrium between the wurtzite and zinc blende polytypes of CdSe nanocrystals. In-situ wide-angle X-ray scattering measurements reveal that short-chain (e.g., propyl) phosphonic acids stabilize CdSe nanocrystals with the zinc blende phase whereas octadecylphosphonic acid stabilize nanocrystals with the wurtzite phase. We also demonstrate how this effect can be used to improve the shape selectivity in the synthesis of anisotropic CdSe/CdS and ZnSe/CdS nanoheterostructures.
引用
收藏
页码：15866 / 15868
页数：3
相关论文
共 33 条
[1]   Semiconductor clusters, nanocrystals, and quantum dots [J].
Alivisatos, AP .
SCIENCE, 1996, 271 (5251) :933-937
[2]   CHARGE DENSITY DISTRIBUTIONS AND SIGMA BOND INDUCTIVE EFFECTS IN HYDROCARBONS AND HYDROCARBON IONS [J].
BAIRD, NC ;
WHITEHEA.MA .
THEORETICA CHIMICA ACTA, 1966, 6 (02) :167-&
[3]   Entropy difference between crystal phases [J].
Bolhuis, PG ;
Frenkel, D ;
Mau, SC ;
Huse, DA .
NATURE, 1997, 388 (6639) :235-236
[4]   Synthesis and micrometer-scale assembly of colloidal CdSe/CdS nanorods prepared by a seeded growth approach [J].
Carbone, Luigi ;
Nobile, Concetta ;
De Giorgi, Milena ;
Sala, Fabio Delia ;
Morello, Giovanni ;
Pompa, Pierpaolo ;
Hytch, Martin ;
Snoeck, Etienne ;
Fiore, Angela ;
Franchini, Isabella R. ;
Nadasan, Monica ;
Silvestre, Albert F. ;
Chiodo, Letizia ;
Kudera, Stefan ;
Cingolani, Roberto ;
Krahne, Roman ;
Manna, Liberato .
NANO LETTERS, 2007, 7 (10) :2942-2950
[5]   Synthesis of Metal-Selenide Nanocrystals Using Selenium Dioxide as the Selenium Precursor [J].
Chen, Ou ;
Chen, Xian ;
Yang, Yongan ;
Lynch, Jared ;
Wu, Huimeng ;
Zhuang, Jiaqi ;
Cao, Y. Charles .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (45) :8638-8641
[6]   Designing PbSe nanowires and nanorings through oriented attachment of nanoparticles [J].
Cho, KS ;
Talapin, DV ;
Gaschler, W ;
Murray, CB .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (19) :7140-7147
[7]   Strain-Dependent Photoluminescence Behavior of CdSe/CdS Nanocrystals with Spherical, Linear, and Branched Topologies [J].
Choi, Charina L. ;
Koski, Kristie J. ;
Sivasankar, Sanjeevi ;
Alivisatos, A. Paul .
NANO LETTERS, 2009, 9 (10) :3544-3549
[8]   Shape and phase control of colloidal ZnSe nanocrystals [J].
Cozzoli, PD ;
Manna, L ;
Curri, ML ;
Kudera, S ;
Giannini, C ;
Striccoli, M ;
Agostiano, A .
CHEMISTRY OF MATERIALS, 2005, 17 (06) :1296-1306
[9]   ZnSe quantum dots within CdS nanorods: A seeded-growth type-II system [J].
Dorfs, Dirk ;
Salant, Asaf ;
Popov, Inna ;
Banin, Uri .
SMALL, 2008, 4 (09) :1319-1323
[10]   Tetrapod-Shaped Colloidal Nanocrystals of II-VI Semiconductors Prepared by Seeded Growth [J].
Fiore, Angela ;
Mastria, Rosanna ;
Lupo, Maria Grazia ;
Lanzani, Guglielmo ;
Giannini, Cinzia ;
Carlino, Elvio ;
Morello, Giovanni ;
De Giorgi, Milena ;
Li, Yanqin ;
Cingolani, Roberto ;
Manna, Liberato .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (06) :2274-2282
1234