Thinner, Smaller, Faster: IR Techniques To Probe the Functionality of Biological and Biomimetic Systems

被引:94
作者
Ataka, Kenichi [1 ]
Kottke, Tilman [2 ]
Heberle, Joachim [1 ]
机构
[1] Free Univ Berlin, Fachbereich Phys Expt Mol Biophys, D-14195 Berlin, Germany
[2] Univ Bielefeld, Fak Chem Biophys Chem, D-33615 Bielefeld, Germany
基金
日本科学技术振兴机构;
关键词
IR spectroscopy; monolayers; reaction mechanisms; single-molecule studies; time-resolved spectroscopy; 2-DIMENSIONAL INFRARED-SPECTROSCOPY; SUM-FREQUENCY GENERATION; SELF-ASSEMBLED MONOLAYERS; CYTOCHROME-C-OXIDASE; VIBRATIONAL SPECTROSCOPY; DIFFERENCE SPECTROSCOPY; 2ND-HARMONIC GENERATION; ADSORBED MOLECULES; STRUCTURAL-CHANGES; GOLD ELECTRODE;
D O I
10.1002/anie.200907114
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
New techniques in vibrational spectroscopy are promising for the study of biological samples as they provide exquisite spatial and/or temporal resolution with the benefit of minimal perturbation of the system during observation. In this Minireview we showcase the power of modern infrared techniques when applied to biological and biomimetic systems. Examples will be presented on how conformational changes in peptides can be traced with femtosecond resolution and nanometer sensitivity by 2D IR spectroscopy, and how surfaceenhanced infrared difference absorption spectroscopy can be used to monitor the effect of the membrane potential on a single protontransfer step in an integral membrane protein. Vibrational spectra of monolayers of molecules at basically any interface can be recorded with sum-frequency generation, which is strictly surface-sensitive. Chemical images are recorded by applying scanning near-field infrared microscopy at lateral resolutions better than 50 nm. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码:5416 / 5424
页数:9
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