Infrared and Raman spectra of Histidine: an ab initio DFT calculations of Histidine molecule and its different protonated forms

Kumar, Santosh; Kumar, Alok; B., S.; K., D.

doi:10.1007/s12648-010-0039-6

Cited by 47 publications

(21 citation statements)

References 20 publications

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“…This region encloses the complex skeleton modes involving few vibration local modes due to modification of length of the bonds and angles between the bonds. Such vibration modes have been previously observed for L-arginine (Kumar and Rai, 2010) and glutamic acid (Sengupta and Krimm, 1985). For Fe 3 O 4 f-MNPs II and V, dominating signal should result from C–C stretching.…”

Section: Resultssupporting

confidence: 73%

Surface Study of Fe3O4 Nanoparticles Functionalized With Biocompatible Adsorbed Molecules

et al. 2019

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Surfaces of iron oxide of ferrimagnetic magnetite (Fe3O4) nanoparticles (MNPs) prepared by Massart's method and their functionalized form (f-MNPs) with succinic acid, L-arginine, oxalic acid, citric acid, and glutamic acid were studied by dynamic light scattering (DLS), Fourier transform infrared spectroscopy (FTIR-S), UV-vis, thermogravimetric analysis (TGA)/differential scanning calorimetry (DSC), X-ray photoelectron spectroscopy (XPS), and reflection electron energy loss spectroscopy (REELS). The XPS analysis of elements and their chemical states at the surface of MNPs and f-MNPs revealed differences in chemical bonding of atoms, content of carbon–oxygen groups, iron oxide forms, iron oxide magnetic properties, adsorbed molecules, surface coverage, and overlayer thickness, whereas the Auger parameters (derived from XPS and Auger spectra) and elastic and inelastic scattering probabilities of electrons on atoms and valence band electrons (derived from REELS spectra) indicated modification of surface charge redistribution, electronic, and optical properties. These modified properties of f-MNPs influenced their biological properties. The surfaces biocompatible for L929 cells showed various cytotoxicity for HeLa cells (10.8–5.3% of cell death), the highest for MNPs functionalized with oxalic acid. The samples exhibiting the largest efficiency possessed smaller surface coverage and thickness of adsorbed molecules layers, the highest content of oxygen and carbon–oxygen functionalizing groups, the highest ratio of lattice O2− and OH− to C sp2 hybridizations on MNP surface, the highest ratio of adsorbed O− and OH− to C sp2 hybridizations on adsorbed molecule layers, the closest electronic and optical properties to Fe3O4, and the lowest degree of admolecule polymerization. This high cytotoxicity was attributed to interaction of cells with a surface, where increased content of oxygen groups, adsorbed O−, and OH− may play the role of additional adsorption and catalytic sites and a large content of adsorbed molecule layers of carboxylic groups facilitating Fenton reaction kinetics leading to cell damage.

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Section: Resultssupporting

confidence: 73%

Surface Study of Fe3O4 Nanoparticles Functionalized With Biocompatible Adsorbed Molecules

et al. 2019

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“…Linear IR spectroscopy has systematically identified and assigned most of these sidechain transitions. 1-6,29-31 Some side chain infrared spectra, such as Arg, Lys, Asp, and Glu show additional complexity due to them having pH dependent transitions. 2 These transitions can shift in frequency depending on their protonation states causing the presence of one or even multiple peaks over a range of biological relevant pH's.…”

Section: Introductionmentioning

confidence: 99%

Identification of Arginine Residues in Peptides by 2D-IR Echo Spectroscopy

2011

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The CN stretching vibrations of the guanidyl group in the arginine dipeptide sidechain are examined by two-dimensional infrared spectroscopy. In D2O, the spectra display two distinct diagonal peaks. These nearly degenerate modes undergo ultrafast energy transfer. The energy transfer rate was determined directly from the 2D-IR spectra to be 1/2.1 ps-1. The cross peaks in 2D-IR arising from the energy transfer provide a definitive identification of arginine in larger proteins. An example of arginine in the transmembrane protein M2, found in Influenza viruses, is given.

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“…The formation of SiO 2 -Arg was evidenced by the appearance of two new peaks at 1678 and 1579 cm -1 from asymmetric NH 2 out-of-plane bending vibration and C=O stretching vibration, respectively [27]. Moreover the disappearance of the peaks of the epoxide ring C-C asymmetric and symmetric stretching vibration at 908 and 1255 cm -1 , respectively, confirms that the L-arginine molecule is successfully attached on the silica surface by covalent bond.…”

Section: Functional Group Of Sio 2 -Argmentioning

confidence: 77%

L-Arginine-Modified Silica for Adsorption of Gold(III)

Hastuti¹,

Nuryono²,

Kuncaka³

2015

Indones. J. Chem.

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In this research, L-arginine-modified silica (SiO 2 -Arg) with 3-glycidoxypropyl-trimethoxysilane (GPTMS) as the linking agent has been synthesized through sol gel process for adsorption of Au (III) -Arg material as an effective adsorbent for metal ions particularly gold(III). Keywords: silica; modification; L-arginine; adsorption; gold(III) ABSTRAK Dalam penelitian ini, silika termodifikasi L-arginin (SiO 2 -Arg) dengan 3-glisidoksipropil-trimetoksisilan (GPTMS) sebagai penggandeng telah disintesis melalui proses sol gel untuk adsorpsi Au(III) dalam larutan air. Tetraetil ortosilikat (TEOS) sebagai prekursor sumber silika, larutan L-arginin 0,9 M dengan berbagai perbandingan volume dan zat penggandeng dicampur bersama-sama untuk membentuk gel. SiO 2 -Arg dikarakterisasi menggunakan spektropotometer Infra Merah, analisis termogravimetri, dan analisis unsur. Adsorpsi dilakukan dalam sistem batch pada berbagai kondisi termasuk waktu kontak dan konsentrasi awal ion logam Au(III). Selektivitas adsorben terhadap Au(III) diuji dengan hadirnya ion logam Cu(II),

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Infrared and Raman spectra of Histidine: an ab initio DFT calculations of Histidine molecule and its different protonated forms

Abstract: The infrared spectra

Cited by 47 publications

References 20 publications

Surface Study of Fe3O4 Nanoparticles Functionalized With Biocompatible Adsorbed Molecules

Surface Study of Fe3O4 Nanoparticles Functionalized With Biocompatible Adsorbed Molecules

Identification of Arginine Residues in Peptides by 2D-IR Echo Spectroscopy

L-Arginine-Modified Silica for Adsorption of Gold(III)

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