Role of the alkali-metal cation size in the self-assembly of polyoxometalate-monolayer shells on gold nanoparticles

Yifeng Wang; Offer Zeiri; Shelly Sharet; Ira A. Weinstock

doi:10.1021/ic300431a

Role of the alkali-metal cation size in the self-assembly of polyoxometalate-monolayer shells on gold nanoparticles

Yifeng Wang, Offer Zeiri, Shelly Sharet, Ira A. Weinstock

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

Polyoxometalate (POM)-monolayer stability constants, K, for three POM anions vary with the cation size, in the same order as that for increasing ion-pair formation with α-SiW₁₁O₃₉^8- (1) in the early nucleation phase of monolayer self-assembly: Li⁺ < Na⁺ < K⁺ < Cs⁺. Cryo-TEM images demonstrating the use of the cation size to rationally control monolayer formation provide definitive evidence that the POM monolayers are electrostatically stabilized (ionic) shells, analogous in that respect to the monolayer walls of "hollow" POM-macroanion vesicles.

Original language	English
Pages (from-to)	7436-7438
Number of pages	3
Journal	Inorganic Chemistry
Volume	51
Issue number	14
DOIs	https://doi.org/10.1021/ic300431a
State	Published - 16 Jul 2012

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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10.1021/ic300431a

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abstract = "Polyoxometalate (POM)-monolayer stability constants, K, for three POM anions vary with the cation size, in the same order as that for increasing ion-pair formation with α-SiW11O398- (1) in the early nucleation phase of monolayer self-assembly: Li+ < Na+ < K+ < Cs+. Cryo-TEM images demonstrating the use of the cation size to rationally control monolayer formation provide definitive evidence that the POM monolayers are electrostatically stabilized (ionic) shells, analogous in that respect to the monolayer walls of {"}hollow{"} POM-macroanion vesicles.",

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T1 - Role of the alkali-metal cation size in the self-assembly of polyoxometalate-monolayer shells on gold nanoparticles

AU - Wang, Yifeng

AU - Zeiri, Offer

AU - Sharet, Shelly

AU - Weinstock, Ira A.

PY - 2012/7/16

Y1 - 2012/7/16

N2 - Polyoxometalate (POM)-monolayer stability constants, K, for three POM anions vary with the cation size, in the same order as that for increasing ion-pair formation with α-SiW11O398- (1) in the early nucleation phase of monolayer self-assembly: Li+ < Na+ < K+ < Cs+. Cryo-TEM images demonstrating the use of the cation size to rationally control monolayer formation provide definitive evidence that the POM monolayers are electrostatically stabilized (ionic) shells, analogous in that respect to the monolayer walls of "hollow" POM-macroanion vesicles.

AB - Polyoxometalate (POM)-monolayer stability constants, K, for three POM anions vary with the cation size, in the same order as that for increasing ion-pair formation with α-SiW11O398- (1) in the early nucleation phase of monolayer self-assembly: Li+ < Na+ < K+ < Cs+. Cryo-TEM images demonstrating the use of the cation size to rationally control monolayer formation provide definitive evidence that the POM monolayers are electrostatically stabilized (ionic) shells, analogous in that respect to the monolayer walls of "hollow" POM-macroanion vesicles.

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JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 14

ER -

Role of the alkali-metal cation size in the self-assembly of polyoxometalate-monolayer shells on gold nanoparticles

Abstract

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