Complete Elemental Analysis of Low-ka-SiC:H Thin Films by Transmission FTIR Spectroscopy

2014 ◽  
Vol 3 (3) ◽  
pp. N52-N57 ◽  
Author(s):  
Milan Milosevic ◽  
Sean W. King
Keyword(s):  
Thin Films ◽  
Ftir Spectroscopy ◽  
Elemental Analysis

A Low Temperature Vaporization of Pb(THD)2 with NH3

1994 ◽  
Vol 361 ◽  
Author(s):  
June Key Lee ◽  
Wan In Lee ◽  
Seshu B. Desu
Keyword(s):  
Molecular Structure ◽  
Thin Films ◽  
Low Temperature ◽  
Elemental Analysis ◽  
Carrier Gas

ABSTRACTPb(THD)2 is one of the most popular CVD precursors for lead. It was found in this study that the volatility of Pb(THD)2 can be considerably improved by using ammonia as a carrier gas. An adduct between Pb(THD)2 and NH3 is generated in-situ, when the NH3 carrier gas is passed through the bubbler containing Pb(THD)2. The ammoniated precursor was isolated and its molecular structure was characterized by elemental analysis, infrared and NM.R. PbO thin films could be prepared with this precursor system while maintaining the bubbler temperature at 110° C, which is considerably lower than the temperature used with the Pb(THD)2 precursor in the commonly used carrier gas.

Nitrogen redistribution in annealed LaFeOxNy thin films investigated by FTIR spectroscopy and EELS mapping

2018 ◽  
Vol 427 ◽  
pp. 1041-1045 ◽  
Author(s):  
Emile Haye ◽  
Victor Pierron ◽  
Silvère Barrat ◽  
Fabien Capon ◽  
Frans Munnik ◽  
...  
Keyword(s):  
Thin Films ◽  
Ftir Spectroscopy ◽  
Nitrogen Redistribution

scholarly journals Humic Substances from sediments of Lobos Pond (Argentina). Isolation, Characterization and Limnological Implications

2017 ◽  
Vol 36 (2) ◽  
pp. 128
Author(s):  
Roberto G. Choconi ◽  
Alberto A. Ghini ◽  
Victor H. Conzonno ◽  
Alicia Fernández Cirelli
Keyword(s):  
Ftir Spectroscopy ◽  
Humic Substances ◽  
Elemental Analysis ◽  
Fulvic Acids ◽  
Solid Residue ◽  
Organic Substances ◽  
Native Structure ◽  
Humic And Fulvic Acids ◽  
Mild Conditions ◽  
Stormy Weather

Humic substances (HS) were isolated from the sediments of Lobos Pond (Argentina) using mild conditions to preserve their native structure. The HS (humic and fulvic acids) were characterized by means of elemental analysis and FTIR spectroscopy. Also a by-product obtained during fulvic acids (FA) fractionation (an amorphous white solid residue) was analyzed. Results revealed possible interactions between FA and inorganic-organic substances that may have implications referring to bioavailability. Other limnological implications, such as autochtonous origin of HS linked with the hydrology, and change of pH during stormy weather that affects HS interactions, are discussed.

scholarly journals Studies of Mixed Ligand Lanthanum Complexes: Synthesis, Spectral Interpretations and Antibacterial Study

2021 ◽  
pp. 161-174
Author(s):  
Sunil Patil ◽  
Bhushan Langi ◽  
Minakshi Gurav ◽  
Digambar Patil
Keyword(s):  
Magnetic Susceptibility ◽  
Ftir Spectroscopy ◽  
Elemental Analysis ◽  
Metal Ion ◽  
Antibacterial Activities ◽  
Decomposition Temperature ◽  
Mixed Ligand ◽  
Visible Spectroscopy ◽  
Uv Visible ◽  
Xrd Techniques

The mixed ligand lanthanum complexes have been synthesized using polydentate ligands. The (2Z)-2-(N-hydroxyimino)-1,2-diphenylethan-1-ol (cupron) was used as a primary ligand and L-isolucine, L-threonine, L-lysine and L-glycine were used as secondary ligands for the synthesis. Conductometry, elemental analysis, magnetic susceptibility measurements, complexometric estimation, UV-Visible spectroscopy, FTIR spectroscopy, thermal analysis and XRD methods were used for structural interpretation of all synthesized complexes. All complexes were solid and white and slight yellow in colour. They are non-electrolytic and diamagnetic in nature, as confirmed by conductometric and magnetic susceptibility methods respectively. All the complexes were synthesized by combination of lanthanum metal ion, primary ligand and secondary ligands in 1:2:1 ratio which was confirmed by elemental analysis. During reaction between lanthanum ion, primary ligand and secondary ligands there was transition of electrons which was confirmed by UV-Visible spectroscopy. Identification of functional group in the complexes was carried out and confirmed by FTIR spectroscopy. The decomposition temperature and thermal behaviour of the complexes have been concluded by thermal and XRD techniques. Tube dilution and agar cup methods have been employed to study antibacterial activities of all synthesized lanthanum complexes. The inhibition potential was seen to some extent.  

Purification on Kappa Carrageenan by Re-Precipitation Technique

2021 ◽  
Vol 317 ◽  
pp. 327-332
Author(s):  
Norsyabila Shrgawi ◽  
Intan Juliana Shamsudin ◽  
Hussein Hanibah ◽  
Siti Aminah Mohd Noor ◽  
Norherdawati Kasim
Keyword(s):  
Fourier Transform ◽  
Ftir Spectroscopy ◽  
Intermolecular Interactions ◽  
Elemental Analysis ◽  
Precipitation Process ◽  
Distilled Water ◽  
Lower Intensity ◽  
Kappa Carrageenan ◽  
Physical Changes ◽  
Hydroxyl Band

Purification on kappa (ƙ) carrageenan was performed by dissolving ƙ-carrageenan powder in distilled water and re-precipitated with ethanol and n-hexane separately during re-precipitation process. The purified kappa carrageenan was analyzed by using Fourier transform infrared (FTIR) spectroscopy and carbon, hydrogen, nitrogen, and sulfur (CHNS) elemental analysis. The outcomes from FTIR showed there are physical changes due to intermolecular interactions which lead to decrease and lower intensity of hydroxyl band at 3345 cm-1 after re-precipitated with n-hexane, compared to re-precipitation with ethanol and unpurified ƙ-carrageenan. There were variations observed in the percentages of C, H and S in the CHNS analysis between unpurified and purified ƙ-carrageenan. The successfully purified ƙ-carrageenan are suitable to be used for further application.

New molecular scale insights into the α-transition of Nafion® thin films from variable temperature ATR-FTIR spectroscopy

2016 ◽  
Vol 18 (37) ◽  
pp. 26144-26150 ◽  
Author(s):  
V. Ozhukil Kollath ◽  
K. Karan
Keyword(s):  
Thin Films ◽  
Transition Temperature ◽  
Ir Spectroscopy ◽  
Ftir Spectroscopy ◽  
Long Range ◽  
Direct Evidence ◽  
Variable Temperature ◽  
Range Order ◽  
Long Range Order ◽  
Molecular Scale

IR spectroscopy based direct evidence of long range order–disorder in the Nafion backbone correlated with the α-transition temperature.

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