Dendron-like growth of silver nanoparticles using a water-soluble oligopeptide

被引：12

作者：

Bhattacharya, Santanu

Das, Apurba K.

Banerjee, Arindam ^{[1
]}

Chakravorty, Dipankar

机构：

[1] Indian Assoc Cultivat Sci, Dept Biol Chem, Kolkata 700032, W Bengal, India

[2] Indian Assoc Cultivat Sci, Unit Nano Sci & Technol, Kolkata 700032, W Bengal, India

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 22期

关键词：

D O I：

10.1021/jp0604847

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：

A dendron-like nanostructure of silver was grown in solution using a water-soluble tetrapeptide Tyr-Aib-Tyr- Val( Aib, alpha-amino isobutyric acid), silver nitrate, and methanol. These structures are composed of silver nanoparticles having a bimodal size distribution with the median diameters around 2.0 and 19.5 nm, respectively. The dendron-like growth is ascribed to the effect of the local electric field generated by the dipoles associated with the peptide molecules. The optical absorption spectra have been analyzed by Mie scattering theory, which shows that there is a metal-nonmetal transition in silver particles having diameters less than similar to 2.0 nm.

引用

页码：10757 / 10761

页数：5

共 43 条

[1] Self-assembly of a two-dimensional superlattice of molecularly linked metal clusters [J].