Growth, structural, spectroscopic and optical studies of pure and amino acid (glycine) doped methyl-para-hydroxy benzoate single crystals

2009 ◽  
Vol 72 (4) ◽  
pp. 687-690 ◽  
Author(s):  
K. Selvaraju ◽  
K. Kirubavathi ◽  
S. Kumararaman
Keyword(s):  
Amino Acid ◽  
Single Crystals ◽  
Optical Studies ◽  
Amino Acid Glycine

Growth and characterization of amino acid (glycine and valine) substituted l-arginine diphosphate single crystals

2006 ◽  
Vol 29 (2-3) ◽  
pp. 173-179 ◽  
Author(s):  
A. Joseph Arul Pragasam ◽  
J. Madhavan ◽  
M. Gulam Mohamed ◽  
S. Selvakumar ◽  
K. Ambujam ◽  
...  
Keyword(s):  
Amino Acid ◽  
Single Crystals ◽  
Amino Acid Glycine

scholarly journals Raman scattering and luminescence in single crystals of the amino acid glycine C2H5NO2 with an admixture of croconic acid C5H2O5

2021 ◽  
Vol 2103 (1) ◽  
pp. 012070
Author(s):  
E V Balashova ◽  
A N Smirnov ◽  
Yu V Davydov ◽  
B B Krichevtsov ◽  
A N Starukhin
Keyword(s):  
Amino Acid ◽  
Raman Scattering ◽  
Single Crystals ◽  
Thin Plates ◽  
Excitation Wavelength ◽  
Scattering Spectra ◽  
Polarized Raman ◽  
Raman Scattering Spectra ◽  
532 Nm ◽  
Amino Acid Glycine

Abstract Single crystals of the amino acid glycine (Gly) C2H5NO2 doped with croconic acid (CA) C5H2O5 were synthesized by evaporation from an aqueous solution. The crystals grow in the form of hexagonal pyramids or thin plates. Analysis of polarized Raman scattering spectra (excitation wavelength of 532 nm) measured at room temperatures showed that crystals in the form of pyramids corresponded to γ-polymorph (γ-Gly), and crystals in the form of plates to α-polymorph of glycine (α - Gly). The presence of croconic acid molecules in the crystals is confirmed by the change in their color from white in pure Gly crystals to light or dark yellow, characteristic of CA crystals, as well as the presence of weak lines corresponding to CA in the Raman spectra. In single crystals of both Gly:CA polymorphs, strong green luminescence significantly exceeding the intensity of Raman scattering is observed in the range 400 - 700 nm with a maximum at 510 nm (2.44 eV) upon excitation at λ= 325 nm.

Optical Studies of a Bacterial Photoreceptor Protein, Photoactive Yellow Protein, in Single Crystals

Biochemistry ◽  
1995 ◽  
Vol 34 (3) ◽  
pp. 879-890 ◽  
Author(s):  
Kingman Ng ◽  
Elizabeth D. Getzoff ◽  
Keith Moffat
Keyword(s):  
Single Crystals ◽  
Photoactive Yellow Protein ◽  
Optical Studies

Magneto-Optical Studies of Chemical Inhomogeneities in Bi2212 Single Crystals

2004 ◽  
pp. 119-124
Author(s):  
Noriko Chikumoto ◽  
Kimiyasu Furusawa ◽  
Masato Murakami
Keyword(s):  
Single Crystals ◽  
Optical Studies

ESR and Optical Studies on γ-Irradiated MgCl2 Single Crystals

1983 ◽  
Vol 52 (1) ◽  
pp. 267-271 ◽  
Author(s):  
Shigeo Kinno ◽  
Ryumyo Onaka
Keyword(s):  
Single Crystals ◽  
Optical Studies

Effect of amino group protonation on the carboxyl group in aqueous glycine observed by O 1s X-ray emission spectroscopy

2018 ◽  
Vol 20 (36) ◽  
pp. 23214-23221 ◽  
Author(s):  
Y. Horikawa ◽  
T. Tokushima ◽  
O. Takahashi ◽  
Y. Harada ◽  
A. Hiraya ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Amino Acid ◽  
Electronic Structures ◽  
Emission Spectroscopy ◽  
Selective Excitation ◽  
Carboxyl Group ◽  
Amino Group ◽  
X Ray ◽  
Excitation Conditions ◽  
Amino Acid Glycine

The valence electronic structures of the amino acid glycine in aqueous solution were investigated in detail through X-ray emission spectroscopy at O 1s excitation under selective excitation conditions of the CO site in the carboxyl group.

scholarly journals Achiral amino acid glycine acts as an origin of homochirality in asymmetric autocatalysis

2019 ◽  
Vol 17 (17) ◽  
pp. 4200-4203 ◽  
Author(s):  
Arimasa Matsumoto ◽  
Hanae Ozaki ◽  
Sumeru Tsuchiya ◽  
Toru Asahi ◽  
Meir Lahav ◽  
...  
Keyword(s):  
Amino Acid ◽  
Asymmetric Autocatalysis ◽  
Origin Of Chirality ◽  
Origin Of Homochirality ◽  
Amino Acid Glycine

Achiral glycine acts as the origin of chirality in conjunction with asymmetric autocatalysis to afford highly enantioenriched compound.

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