FT-IR spectroscopic studies of metal nitrates supported on a modified montmorillonite clay

1991 ◽  
Vol 10 (3-4) ◽  
pp. 279-287 ◽  
Author(s):  
S. K. Srinivasan ◽  
Somnath Ganguly
Keyword(s):  
Spectroscopic Studies ◽  
Montmorillonite Clay ◽  
Modified Montmorillonite ◽  
Metal Nitrates ◽  
Ft Ir ◽  
Ir Spectroscopic

CP-MAS and FT-IR spectroscopic studies of new derivatives of gossypol in solid

2005 ◽  
Vol 751 (1-3) ◽  
pp. 151-155 ◽  
Author(s):  
Piotr Przybylski ◽  
Grzegorz Bejcar ◽  
Wojciech Schilf ◽  
Bogumil Brzezinski ◽  
Franz Bartl
Keyword(s):  
Spectroscopic Studies ◽  
Ft Ir ◽  
Ir Spectroscopic ◽  
Derivatives Of

Spectroscopic Study of the Uranyl—Acetohydroxamate Adduct with Tributyl Phosphate

2007 ◽  
Vol 61 (7) ◽  
pp. 772-776 ◽  
Author(s):  
Peter Tkac ◽  
Alena Paulenova ◽  
Kevin P. Gable
Keyword(s):  
Acetic Acid ◽  
Organic Phase ◽  
Tributyl Phosphate ◽  
Chelate Ring ◽  
Spectroscopic Studies ◽  
Acetohydroxamic Acid ◽  
Ft Ir ◽  
Uranium Distribution ◽  
Ir Spectroscopic ◽  
Hydrolysis Of

The ultraviolet–visible (UV-Vis) and Fourier transform infrared (FT-IR) spectroscopic studies carried out for the system UO2(NO3)/AHA/TBP (uranyl–acetohydroxamate–tributyl phosphate) confirmed the presence of the adduct of UO2(NO3)(AHA) ·2TBP with 1:1 stoichiometry for UO2:AHA (acetohydroxamic acid). The spectrum of this complex is identical to the infrared spectrum of the organic phase formed in the uranium distribution experiments with 30% TBP/n-dodecane and AHA present in aqueous phase. Disappearance of the hydroxyl stretching band and a shift in the position of the carbonyl band in the infrared spectra revealed that both the hydroxyl and the carbonyl group of acetohydroxamic acid are involved in the chelate ring with uranium. Also, acetic acid, accrued after acidic hydrolysis of acetohydroxamic acid, was identified in the extraction organic phase.

scholarly journals Investigation on optical, electrical and etching properties of 2-aminopyridinium 4-aminobenzoate: A phase matchable organic single crystal for optoelectronic device applications

2017 ◽  
Vol 35 (1) ◽  
pp. 126-134 ◽  
Author(s):  
L. Chandra ◽  
J. Chandrasekaran ◽  
K. Perumal ◽  
B. Babu ◽  
V. Jayaramakrishnan
Keyword(s):  
Optoelectronic Device ◽  
Spectroscopic Studies ◽  
Average Particle ◽  
Dielectric Study ◽  
X Ray Diffraction ◽  
Device Applications ◽  
Evaporation Technique ◽  
Ft Ir ◽  
Ir Spectroscopic ◽  
Homo Lumo

AbstractNLO active 2-aminopyridinium 4-aminobenzoate (APAB) single crystals were successfully grown by the standard slow evaporation technique. The crystallinity of the grown crystals was analyzed through X-ray diffraction (XRD) measurements. Fourier transform infrared (FT-IR) spectroscopic studies were also performed for the identification of different modes present in the compound. The UV-Vis absorption and transmittance spectra were recorded for the grown crystal and the optical band gap was calculated. Birefringence and etching studies were also carried out. The dielectric study showed that the dielectric constant decreased with an increase in frequency. The photoconductivity study revealed its positive photoconducting nature. Theoretical HOMO LUMO investigations were also made for the crystal. The relative SHG efficiency of the material was investigated by the Kurtz and Perry powder technique. The phase matching property of the crystal was studied through the SHG dependence of average particle sizes.

Dynamic FT-IR Spectroscopic Studies of Silk Fibroin Films

1997 ◽  
Vol 51 (4) ◽  
pp. 545-547 ◽  
Author(s):  
Masashi Sonoyama ◽  
Mitsuhiro Miyazawa ◽  
Gen Katagiri ◽  
Hideyuki Ishida
Keyword(s):  
Ir Spectra ◽  
Phase Analysis ◽  
Silk Fibroin ◽  
Spectroscopic Studies ◽  
Cast Films ◽  
Dynamic Spectra ◽  
Ft Ir ◽  
Ir Spectroscopic ◽  
Overlapping Bands ◽  
Good Agreement

Dynamic FT-IR spectra in the amide I region were measured for silk fibroin cast films. Phase analyses of the dynamic spectra were carried out in order to separate them into several components which are due to the secondary structures of fibroin. These observations showed that peak positions of the amide I bands were in good agreement with those obtained by Fourier self-deconvolution procedures. In conclusion, phase analysis of dynamic FT-IR spectra is a powerful technique for separation of highly overlapping bands.

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