Ionic-like behavior of oppositely charged nanoparticles

被引：103

作者：

Kalsin, Alexander M. ^{[1
]}

Kowalczyk, Bartlomiej ^{[1
]}

Smoukov, Stoyan K. ^{[1
]}

Klajn, Rafal ^{[1
]}

Grzybowski, Bartosz A. ^{[1
]}

机构：

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

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2006年 / 128卷 / 47期

关键词：

D O I：

10.1021/ja0642966

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Mixtures of oppositely charged nanoparticles of various sizes and charge ratios precipitate only at the point of electroneutrality. This phenomenonspecific to the nanoscale and reminiscent of threshold precipitation of ionsis a consequence of the formation of core-and-shell nanoparticle aggregates, in which the shells are composed of like-charged particles and are stabilized by efficient electrostatic screening. Copyright © 2006 American Chemical Society.

引用

页码：15046 / 15047

页数：2

共 9 条

[1] UNDERSTANDING COLLOIDAL CHARGE RENORMALIZATION FROM SURFACE-CHEMISTRY - EXPERIMENT AND THEORY
GISLER, T
SCHULZ, SF
BORKOVEC, M
STICHER, H
SCHURTENBERGER, P
DAGUANNO, B
KLEIN, R
[J]. JOURNAL OF CHEMICAL PHYSICS, 1994, 101 (11) : 9924 - 9936
[2] Electrostatic aggregation and formation of core-shell suprastructures in binary mixtures of charged metal nanoparticles
Kalsin, Alexander M.
Pinchuk, Anatoliy O.
Smoukov, Stoyan K.
Paszewski, Maciej
Schatz, George C.
Grzybowski, Bartosz A.
[J]. NANO LETTERS, 2006, 6 (09) : 1896 - 1903
[3] Electrostatic self-assembly of binary nanoparticle crystals with a diamond-like lattice
Kalsin, AM
Fialkowski, M
Paszewski, M
Smoukov, SK
Bishop, KJM
Grzybowski, BA
[J]. SCIENCE, 2006, 312 (5772) : 420 - 424
[4] Influence of gold topography on carboxylic acid terminated self-assembled monolayers
Leopold, MC
Black, JA
Bowden, EF
[J]. LANGMUIR, 2002, 18 (04) : 978 - 980
[5] Heteroaggregation, repeptization and stability in mixtures of oppositely charged colloids
Rasa, M
Philipse, AP
Meeldijk, JD
[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2004, 278 (01) : 115 - 125
[6] Tomioka N, 1998, ANGEW CHEM INT EDIT, V37, P1531, DOI 10.1002/(SICI)1521-3773(19980619)37:11<1531::AID-ANIE1531>3.0.CO
[7] 2-T
[8] Applications properties and synthesis of ω-functionalized n-alkanethiols and disulfides -: the building blocks of self-assembled monolayers
Witt, D
Klajn, R
Barski, P
Grzybowski, BA
[J]. CURRENT ORGANIC CHEMISTRY, 2004, 8 (18) : 1763 - 1797
[9] Heteroaggregation with nanoparticles: effect of particle size ratio on optimum particle dose
Yates, PD
Franks, GV
Biggs, S
Jameson, GJ
[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2005, 255 (1-3) : 85 - 90

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