scholarly journals IR/Raman characterization of Au-mercaptotriazole crystals

2019 ◽  
Vol 51 (3) ◽  
pp. 358-364
Author(s):  
S. B. Dimitrijević ◽  
S. Č. Alagić ◽  
M. M. Rajčić-Vujasinović ◽  
S. P. Dimitrijević ◽  
A. T. Ivanović
Keyword(s):  
Raman Spectroscopy ◽  
Ph Change ◽  
Gold Complexes ◽  
Ir And Raman Spectroscopy ◽  
Ph Values ◽  
Additional Coordination ◽  
Ir And Raman ◽  
Pyrrole Nitrogen ◽  
Raman Characterization

The aim of this study was a characterization of the crystals of gold complexes based on mercaptotrazole, obtained from solutions with different pH values (2, 4, 7, and 9), using the methods of infrared (IR) and Raman spectroscopy. Both methods provided very useful information on the investigated systems and signalized existence of the Au-S bond in the complexes obtained at pH = 2 and 9. Recorded spectra clearly illustrated the changes that occur in the systems as a consequence of pH change. At the same time, the results also showed that the pyrrole nitrogen atoms stay protonated at pH = 9, which is not in favor of the assumption evolved from the previous UV-vis analysis of possible additional coordination between Au and possible deprotonated nitrogen atoms at this particular pH. Keywords: synthesis; gold-mercaptotriazole (Au-MT); IR and Raman spectroscopy

scholarly journals Evaluation of Salmon Adhesion on PET-Metal Interface by ATR, FT-IR, and Raman Spectroscopy

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
E. Zumelzu ◽  
M. J. Wehrhahn ◽  
F. Rull ◽  
H. Pesenti ◽  
O. Muñoz ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Structural Changes ◽  
Polymer Coatings ◽  
New Production ◽  
Ir And Raman Spectroscopy ◽  
Chromium Vi ◽  
Physical Tests ◽  
Ft Ir ◽  
Ir And Raman

The material employed in this study is an ecoefficient, environmentally friendly, chromium (VI)-free (noncarcinogenic) metal polymer. The originality of the research lies in the study of the effect of new production procedures of salmon on metal packaging with multilayer polyethylene terephthalate (PET) polymer coatings. Our hypothesis states that the adhesion of postmortem salmon muscles to the PET polymer coating produces surface and structural changes that affect the functionality and limit the useful life of metal containers, compromising therefore their recycling capacity as ecomaterials. This work is focused on studying the effects of the biochemical changes of postmortem salmon on the PET coating and how muscle degradation favors adhesion to the container. The experimental design considered a series of laboratory tests of containers simulating the conditions of canned salmon, chemical and physical tests of food-contact canning to evaluate the adhesion, and characterization of changes in the multilayer PET polymer by electron microscopy, ATR, FT-IR, and Raman spectroscopy analyses. The analyses determined the effect of heat treatment of containers on the loss of freshness of canned fish and the increased adhesion to the container wall, and the limited capability of the urea treatment to remove salmon muscle from the container for recycling purposes.

Characterization of human ovarian teratoma hair by using AFM, FT-IR, and Raman spectroscopy

2011 ◽  
Vol 74 (12) ◽  
pp. 1121-1126 ◽  
Author(s):  
Kyung Sook Kim ◽  
Jinwoo Lee ◽  
Min-Hyung Jung ◽  
Young Joon Choi ◽  
Hun-Kuk Park
Keyword(s):  
Raman Spectroscopy ◽  
Ovarian Teratoma ◽  
Ir And Raman Spectroscopy ◽  
Ft Ir ◽  
Ir And Raman

scholarly journals Darstellung und spektroskopische Charakterisierung der Trihalogenphosphonium-Salze PHal3X+MF6- (Hal = Cl, Br; X = H, D; M = As, Sb) / Preparation and Spectroscopic Characterization of the Trihalogenophosphonium Salts PHal3X+MF6- (Hal = Cl, Br; X = H, D; M = As, Sb)

1994 ◽  
Vol 49 (2) ◽  
pp. 221-224 ◽  
Author(s):  
Rolf Minkwitz ◽  
Birgit Bäck
Keyword(s):  
Raman Spectroscopy ◽  
Spectroscopic Characterization ◽  
Ir And Raman Spectroscopy ◽  
Ir And Raman

PHal3X+MF6- (Hal = Cl, Br; X = H, D; M = As, Sb) are prepared at 213 K by protonation of the phosphortrihalides in the superacidic media XF/MF5. The salts are characterized by 31P, MS, IR and Raman spectroscopy.

scholarly journals APLICAÇÃO DA ESPECTROSCOPIA FT-IR E RAMAN PARA CARACTERIZAÇÃO DE SOLO OBTIDO EM ESCAVAÇÃO NO SÍTIO ARQUEOLÓGICO TEMPLO DOS PILARES, MATO GROSSO DO SUL

2021 ◽  
Vol 36 (1) ◽  
pp. 128
Author(s):  
Cássia Patrícia Seccatto ◽  
Jaldair Araujo e Nobrega ◽  
Rozanna Marques Muzzi ◽  
Rodrigo Luiz Simas de Aguiar
Keyword(s):  
Raman Spectroscopy ◽  
Vibrational Energy ◽  
Archaeological Site ◽  
Rotational Energy ◽  
Mato Grosso ◽  
Ir And Raman Spectroscopy ◽  
Ft Ir ◽  
Ir And Raman ◽  
Mato Grosso Do Sul

O presente estudo buscou determinar através da técnica FT-IR e Raman, características do solo coletado no sítio arqueológico ‘Templo dos Pilares’ localizado no município de Alcinópolis. Através da análise de FT-IR, pode-se observar que os átomos de compostos orgânicos podem ter sua vibração com amplitude aumentada ao redor das ligações covalentes que os ligam, nesse processo cada mudança de nível de energia vibracional corresponde uma série de mudanças de níveis de energia rotacional e assim originando as bandas com diferentes comprimentos de ondas observadas no espectro.APPLICATION OF FT-IR AND RAMAN SPECTROSCOPY FOR CHARACTERIZATION OF SOIL OBTAINED IN EXCAVATION AT THE PILLARS-MS TEMPLE ARCHAEOLOGICAL SITE, MATO GROSSO DO SUL ABSTRACTThe present study sought to determine, using the FT-IR and Raman technique, characteristics of the soil collected at the archaeological site ‘Temple of the Pillars’ located in the municipality of Alcinópolis. Through the analysis of FT-IR, it can be observed that the atoms of compounds can have their vibration with increased amplitude around the connections of the bonds that connect them, in this process each change of level of vibrational energy corresponding to a series of level changes of rotational energy and thus originating the bands with different wavelengths observed in the spectrum.Keywords: FT-IR; Characterization; Archaeological.

Electropolymerization of silythiophene monomers: FT-IR and Raman spectroscopy characterization of polythiophene films

1994 ◽  
Vol 62 (3) ◽  
pp. 233-244 ◽  
Author(s):  
Jean-Louis Sauvajol ◽  
Claude Chorro ◽  
Jean-Pierre Lère-Porte ◽  
Robert J.P. Corriu ◽  
Joël J.E. Moreau ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Ir And Raman Spectroscopy ◽  
Ft Ir ◽  
Ir And Raman
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