Tuning of solid phase in supracrystals made of silver nanocrystals

被引：42

作者：

Henry, A. -I. ^{[1
]}

Courty, A. ^{[1
]}

Pileni, M. -P. ^{[1
]}

Albouy, P. -A. ^{[2
]}

Israelachvili, J. ^{[3
,4
]}

机构：

[1] Univ Paris 06, CNRS, Lab Mat Mesoscop & Nanometr, UMR 7070, F-75252 Paris 05, France

[2] Univ Paris 11, CNRS, Phys Solides Lab, UMR 8502, F-91405 Orsay, France

[3] Univ Calif Santa Barbara, Dept Chem Engn, Santa Barbara, CA 93106 USA

[4] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

来源：

NANO LETTERS | 2008年 / 8卷 / 07期

关键词：

D O I：

10.1021/nl8010947

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Decanethiol-passivated silver nanocrystals are shown, by small-angle X-ray diffraction, to organize into hexagonal close packed or face centered cubic (fcc) structures depending on the substrate temperature. When the nanocrystals are passivated by dodecanethiols, fcc and body centered cubic lattices as well as disordered arrangements are observed. The different crystalline phases correspond to thermodynamic equilibrium states. The passivant chain length is shown to control the interactions between the nanocrystals and consequently the superlattice structure.

引用

页码：2000 / 2005

页数：6

共 25 条

[1] Rational design of the first spherical supramolecular dendrimers self-organized in a novel thermotropic cubic liquid-crystalline phase and the determination of their shape by X-ray analysis [J].

Balagurusamy, VSK ;

Ungar, G ;

Percec, V ;

Johansson, G .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (07) :1539-1555

[2] Entropy difference between crystal phases [J].

Bolhuis, PG ;

Frenkel, D ;

Mau, SC ;

Huse, DA .

NATURE, 1997, 388 (6639) :235-236

[3] Nanocrystal superlattices [J].

Collier, CP ;

Vossmeyer, T ;

Heath, JR .

ANNUAL REVIEW OF PHYSICAL CHEMISTRY, 1998, 49 :371-404

[4] Large triangular single crystals formed by mild annealing of self-organized silver nanocrystals [J].

Courty, A. ;

Henry, A.-I. ;

Goubet, N. ;

Pileni, M.-P. .

NATURE MATERIALS, 2007, 6 (11) :900-907

[5] Vibrational coherence of self-organized silver nanocrystals in f.c.c. supra-crystals [J].

Courty, A ;

Mermet, A ;

Albouy, PA ;

Duval, E ;

Pileni, MP .

NATURE MATERIALS, 2005, 4 (05) :395-398

[6] Vibration of self-organized silver nanocrystals [J].

Courty, A ;

Lisiecki, I ;

Pileni, MP .

JOURNAL OF CHEMICAL PHYSICS, 2002, 116 (18) :8074-8078

[7] From hard spheres to soft spheres: The effect of copolymer composition on the structure of micellar cubic phases formed by diblock copolymers in aqueous solution [J].

Hamley, IW ;

Daniel, C ;

Mingvanish, W ;

Mai, SM ;

Booth, C ;

Messe, L ;

Ryan, AJ .

LANGMUIR, 2000, 16 (06) :2508-2514

[8] Three-dimensional hexagonal close-packed superlattice of passivated Ag nanocrystals [J].

Harfenist, SA ;

Wang, ZL ;

Whetten, RL ;

Vezmar, I ;

Alvarez, MM .

ADVANCED MATERIALS, 1997, 9 (10) :817-&

[9] Most stable structure for hard spheres [J].

Koch, H ;

Radin, C ;

Sadun, L .

PHYSICAL REVIEW E, 2005, 72 (01)

[10] Assembly and self-organization of silver nanocrystal superlattices: Ordered "soft spheres" [J].

Korgel, BA ;

Fullam, S ;

Connolly, S ;

Fitzmaurice, D .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (43) :8379-8388

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