A calorimetric investigation of the assembly of gold nanorods to form necklaces

被引：29

作者：

Varghese, Neenu ^{[1
,2
]}

Vivekchand, S. R. C. ^{[1
,2
]}

Govindaraj, A. ^{[1
,2
]}

Rao, C. N. R. ^{[1
,2
]}

机构：

[1] Jawaharlal Nehru Ctr Adv Sci Res, Chem & Phys Mat Unit, DST Unit Nanosci, Bangalore 560064, Karnataka, India

[2] Jawaharlal Nehru Ctr Adv Sci Res, CSIR, Ctr Excellence Chem, Bangalore 560064, Karnataka, India

来源：

CHEMICAL PHYSICS LETTERS | 2008年 / 450卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2007.11.022

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：

Interaction of gold nanorods with cysteine as well as 3-mercaptopropionic acid (MPA) has been investigated by isothermal titration calorimetry (ITC), in combination with electronic absorption spectroscopy and electron microscopy. The assembly process with MPA shows two steps, the first due to the binding of MPA to gold nanorods through the sulfur atom, and the second due to assembly of the MPA capped gold nanorods through the formation of cyclic hydrogen bonded dimers between the MPA molecules. In the case of cysteine only a single step is observed in ITC, due to the binding of the molecules to gold nanorods. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：340 / 344

页数：5

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