Topic
Raman spectroscopy
About: Raman spectroscopy is a research topic. Over the lifetime, 122605 publications have been published within this topic receiving 2891083 citations. The topic is also known as: Raman Spectrum Analysis & spectrum Analysis, Raman.
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TL;DR: Laser-excited Raman spectra of a simple native protein, lysozyme, in aqueous solution are reported and partially interpreted with the help of the specta of its constituent amino acids and appear to be potentially useful in assessment of conformational changes caused by denaturation.
339 citations
TL;DR: A novel Raman spectroscopy technique capable of detecting molecular vibrations at sub-nanometer scale is proposed, which is based on density-functional theory calculations at the 6-311++G(d,p) level.
Abstract: The tip-enhanced near-field Raman (TERS) bands of Rhodamine 6G (R6G), that we reported earlier [Chem. Phys. Lett. 2001, 335, 369.], are assigned on the basis of density-functional theory (DFT) calculations at the 6-311++G(d,p) level. The Raman and infrared intensities as well as frequencies of the vibrational modes are used for band assignments. These vibrational modes, in combination with characterization of resonant electronic transitions using time-dependent DFT calculations, predict spectral changes in resonant Raman and surface-enhanced resonant Raman scatterings of R6G. Moreover, the TERS spectra of R6G are analyzed in detail, where interactions between the tip and R6G molecules and their enhancement mechanisms are discussed. Finally, we propose a novel Raman spectroscopy technique capable of detecting molecular vibrations at sub-nanometer scale.
338 citations
338 citations
TL;DR: This paper presents a collection of Raman spectra of 18 kinds of amino acids and their aqueous solutions that can serve as references for the interpretation of RamaSpectra of proteins and biological materials.
338 citations
TL;DR: In this paper, the size of the crystallites was found to increase from 2 nm for as-prepared samples to 30 nm for samples annealed for 3.5 hr at 920°C.
338 citations