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Modulation of the Hydrogen Bonding Structure of Water by Renal Osmolytes
FEMTO12-2015 Summary: The mammalian kidney is known to accumulate various osmolytes to counteract the deleterious effects of urea and salt concentrations. The mode of operation of osmolytes has long been a controversial issue. One school of thought is direct interactions of osmolytes with protein backbone [1]. While the other believes indirect actio...
RegDate
2015-10-01
Hit
3399
Vibrational solvatochromism of CN and SCN probes revisited
ALTA 2015 Summary with reference: Solvatochromism of small vibrational infrared (IR) probes have been widely used to probe local molecular environments when either dissolved in bulk liquid or inserted in biomolecules and bioorganic materials. One of the most direct and easy-to-measure observables related with probe-environent interaction is the vibrat...
RegDate
2015-10-01
Hit
5426
Vibrational Solvatochromism from First-Principles:SolEFP Method
Korean Chemical Society (KCS) Meeting from 2014
RegDate
2015-10-01
Hit
3251
Spectral analysis of kinetic energies in non-equilibrium system by spectral density of kinetic energy (KESD) approach : HOD in D2O
Summary: Vibrational energy relaxation can prove the time evolution of the environment near vibrational excitation. Especially, in HOD in D2O system, OH stretching vibrations are localized on their bonds whereas vibrations of water are localized over the molecules, which can show more clear information of water H-bonding structure. We used equilibrium ...
RegDate
2015-10-01
Hit
3395
Two-dimensional electronic spectroscopy using optical pulse shaper :Origin of coherent oscillations in Zn-Naphthalycanine aggregate
Summary: We carried out two-dimensional electronic spectroscopy (2DES) for a mixture of Znnaphthalocyanine (ZnNPc) molecular aggregate and its monomer to further investigate the long-lived coherence observed in the 2DES. And we successfully measured the time-resolved 2D electronic spectra of ZnNPc using the optical pulse shaper. One eye-catching figure:
RegDate
2015-10-01
Hit
3160
Study of Stimulated Raman Spectroscopy for chiral molecules
Summary: These studies were carried out using the stimulated Raman spectroscopy such as benzene, toluene and α-pinene. Our results indicate that molecules which have Raman active modes are well matched with spontaneous Raman spectrum. We performed the stimulated Raman spectroscopy for various molecules such as benzene, toluene, (+)-a-pinene, and (-)-l...
RegDate
2015-10-01
Hit
6116
IR Pump-Probe Spectroscopy of Nanoconfined Water Structure in Reverse Micelle
Summary: Vibrational spectroscopy of solute molecules confined in the reverse micelle (RM) systems is an effective way to monitor the variation of their solvation environment and understand the nature of confined aqueous solution. Here we introduce two IR probe molecules that are N-methyl acetamide-d7(NMA-d7) and hydrazoic acid (HN3). Vibrational spec...
RegDate
2015-10-01
Hit
3380
The FT-IR Study of Hofmeister Anion Effect on the Aqueous Solution
Summary: The hydrazoic acid has been found to possess most of important characteristics of good IR probes for studying water structures. I would like to talk to Hofmeister anion any changes in the FT-IR probe of Hydrogen azide, unlike when the HOD solution. I saw about the degree of peak shift. The order of the Hofmeister ion series data for the shift...
RegDate
2015-10-01
Hit
3739
β-Isocyanoalanine as an IR probe: comparison of vibrational dynamics between isonitrile and nitrile-derivatized IR probes
Summary: A vibrational probe based on isonitrile (NC)-derivatized alanine 1 (Ac-Ala(NC)-NHMe) was synthesized and its structure and vibrational dynamics of its NC stretch mode were examined utilizing FTIR and femtosecond IR pump−probe spectroscopy. It has been found that the probe is characterized by very high sensivity to the hydrogen bonding envir...
RegDate
2015-09-24
Hit
3955
Biomolecular Spectroscopy Laboratory
RegDate
2015-09-24
Hit
3384
Computational Spectroscopy
RegDate
2015-09-24
Hit
3201
Direct Quantum Mechanical/Molecular Mechanical Simulations of Two-Dimensional Vibrational Responses
Summary: To theoretically describe 2D IR spectroscopy, which elucidates molecular structure and dynamics, we need to calculate the third order vibrational response function. The present research aims to calculate this response function in the classical limit by way of molecular dynamics (MD) simulation employing quantum mechanical/molecular mechanical...
RegDate
2015-09-24
Hit
3203
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