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Acta Phys. -Chim. Sin.  2012, Vol. 28 Issue (03): 504-521    DOI: 10.3866/PKU.WHXB201201091
INVITED REVIEW     
Molecular Structures of Buried Polymer Interfaces and Biological Interfaces Detected by Sum Frequency Generation Vibrational Spectroscopy
CHEN Zhan
Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109, USA
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Abstract  Molecular structures at interfaces determine interfacial properties. In order to optimize the interfacial structures to achieve improved properties of advanced materials, it is important to characterize molecular structures of interfaces in situ in real time. Recently, a nonlinear optical spectroscopic technique, sum frequency generation (SFG) vibrational spectroscopy, has been developed into a powerful and unique tool to elucidate molecular structures of buried interfaces, including liquid/liquid, solid/liquid, and solid/solid interfaces. In this review, applications of SFG to study molecular structures of complex interfaces such as polymer interfaces and biological interfaces have been discussed. Particularly, molecular surface structural changes of various polymers in water, molecular interactions between polymers and silane model adhesion promoters at interfaces, and structures of buried polymer/polymer as well as polymer/metal interfaces have been presented. In addition, interfacial structures of peptides with varied secondary structures and several representative proteins have been introduced. Interfaces play important roles in many disciplines ranging from chemistry, biology, physics, materials science and engineering, to nanotechnology. The development of a unique technique which can probe molecular structures of complex interfaces in situ greatly impacts the research in these disciplines as well as many interdisciplinary studies.

Key wordsPolymer surface and interface      Biological interface      Peptide      Protein      Adhesion      Secondary structure      Alpha-helix      Beta-sheet     
Received: 14 November 2011      Published: 09 January 2012
MSC2000:  O647  
Fund:  

The project was supported by the National Science Foundation, USA (CHE 1111000), National Institute of Health, USA (GM081655), Army Research Office, USA (W911NF-11-1-0251), Defense Threat Reduction Agency, USA (HDTRA1-11-1-0019), Office of Naval Research, USA (N00014-08-1-1211), and Semiconductor Research Corporation, USA (P10419).

Corresponding Authors: CHEN Zhan     E-mail: zhanc@umich.edu
Cite this article:

CHEN Zhan. Molecular Structures of Buried Polymer Interfaces and Biological Interfaces Detected by Sum Frequency Generation Vibrational Spectroscopy. Acta Phys. -Chim. Sin., 2012, 28(03): 504-521.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB201201091     OR     http://www.whxb.pku.edu.cn/Y2012/V28/I03/504

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