Evidence for spinodal phase separation in two-dimensional nanocrystal self-assembly

被引：152

作者：

Ge, GL ^{[1
]}

Brus, L ^{[1
]}

机构：

[1] Columbia Univ, Dept Chem, New York, NY 10027 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2000年 / 104卷 / 41期

关键词：

D O I：

10.1021/jp002280a

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：

The drying of thin nanocrystal solution films creates a varied range of structured aggregate spatial patterns as a function of surface coverage. These images can be understood as predicted kinetic stages in the fluid-fluid spinodal phase separation of a 2D van der Waals particle system. It is suggested that phase separation occurs due to increased van der Waals nanocrystal-nanocrystal interaction in the presence of air, as compared with the shielded interaction in organic solvents.

引用

收藏

页码：9573 / 9575

页数：3

相关论文

共 18 条

[1] PHASE-DIAGRAM OF THE TWO-DIMENSIONAL LENNARD-JONES SYSTEM - EVIDENCE FOR 1ST-ORDER TRANSITIONS [J].

BARKER, JA ;

HENDERSON, D ;

ABRAHAM, FF .

PHYSICA A, 1981, 106 (1-2) :226-238

[2] Nanocrystal superlattices [J].

Collier, CP ;

Vossmeyer, T ;

Heath, JR .

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

[3] Time-resolved small-angle X-ray scattering studies of nanocrystal superlattice self-assembly [J].

Connolly, S ;

Fullam, S ;

Korgel, B ;

Fitzmaurice, D .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (12) :2969-2970

[4] The equation of state of an energy landscape [J].

Debenedetti, PG ;

Stillinger, FH ;

Truskett, TM ;

Roberts, CJ .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (35) :7390-7397

[5] Pressure/temperature phase diagrams and superlattices of organically functionalized metal nanocrystal monolayers: The influence of particle size, size distribution, and surface passivant [J].

Heath, JR ;

Knobler, CM ;

Leff, DV .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (02) :189-197

[6] PHASE-BEHAVIOR OF A MODEL COLLOID-POLYMER MIXTURE [J].

ILETT, SM ;

ORROCK, A ;

POON, WCK ;

PUSEY, PN .

PHYSICAL REVIEW E, 1995, 51 (02) :1344-1352

[7]

Israelachvili J. J., 1992, INTERMOLECULAR SURFA

[8] DYNAMICS OF PHASE-SEPARATION IN TWO-DIMENSIONAL FLUIDS - SPINODAL DECOMPOSITION [J].

KOCH, SW ;

DESAI, RC ;

ABRAHAM, FF .

PHYSICAL REVIEW A, 1983, 27 (04) :2152-2167

[9] Condensation of ordered nanocrystal thin films [J].

Korgel, BA ;

Fitzmaurice, D .

PHYSICAL REVIEW LETTERS, 1998, 80 (16) :3531-3534

[10] Small-angle x-ray-scattering study of silver-nanocrystal disorder-order phase transitions [J].

Korgel, BA ;

Fitzmaurice, D .

PHYSICAL REVIEW B, 1999, 59 (22) :14191-14201