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Spectrochimica acta. Part A: Molecular spectroscopy最新文献

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Step-scan near-infrared Fourier-transform Raman spectroscopy with 100 picosecond laser pulses 100皮秒激光脉冲阶跃扫描近红外傅里叶变换拉曼光谱
Spectrochimica acta. Part A: Molecular spectroscopy Pub Date : 1994-10-01 DOI: 10.1016/0584-8539(94)80195-9
Gouri S. Jas, Chaozhi Wan, Carey K. Johnson
{"title":"Step-scan near-infrared Fourier-transform Raman spectroscopy with 100 picosecond laser pulses","authors":"Gouri S. Jas,&nbsp;Chaozhi Wan,&nbsp;Carey K. Johnson","doi":"10.1016/0584-8539(94)80195-9","DOIUrl":"10.1016/0584-8539(94)80195-9","url":null,"abstract":"<div><p>Time-resolved Fourier-transform Raman scattering with picosecond excitation is reported for the first time. The resonance Raman spectrum of 9,10-diphenylanthracene in its excited single state was obtained by Raman excitation at 1064 nm with 100 ps pulses, following photoexcitation at 355 nm. The implementation and characterization of time-resolved FT-Raman spectroscopy with a step-scan interferometer is discussed. FT-Raman spectra generated with continuous and mode-locked beams in the continuous-scan mode of the interferometer are compared with step-scan FT-Raman spectra generated with 2 kHz pulses.</p></div>","PeriodicalId":82782,"journal":{"name":"Spectrochimica acta. Part A: Molecular spectroscopy","volume":"50 11","pages":"Pages 1825-1831"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0584-8539(94)80195-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89203237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
A review of Fourier-transform Raman spectroscopic studies on polymers 聚合物傅里叶变换拉曼光谱研究综述
Spectrochimica acta. Part A: Molecular spectroscopy Pub Date : 1994-10-01 DOI: 10.1016/0584-8539(94)80209-2
W.F. Maddams
{"title":"A review of Fourier-transform Raman spectroscopic studies on polymers","authors":"W.F. Maddams","doi":"10.1016/0584-8539(94)80209-2","DOIUrl":"10.1016/0584-8539(94)80209-2","url":null,"abstract":"<div><p>The published work on the FT-Raman spectra of polymers other than elastomers is reviewed and assessed. Experimental techniques, including sampling procedures, measurements at elevated temperatures and microscope accessories are considered first, followed by the scope for quantitative measurements. The survey of published work on polymers is arranged into the subdivisions hydrocarbon polymers, polyamides and polyimides, poly(aryl ether ketone) and poly(aryl ether ether ketone) and the corresponding sulphones, halogenated polymers, highly conjugated polymers, various other polymers, polymerization kinetic studies and thin polymer films.</p></div>","PeriodicalId":82782,"journal":{"name":"Spectrochimica acta. Part A: Molecular spectroscopy","volume":"50 11","pages":"Pages 1967-1986"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0584-8539(94)80209-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85616613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
A Fourier transform Raman spectroscopy study of poly (ether ether ketone)/polytetrafluoroethylene (PEEK/PTFE) blends 聚醚醚酮/聚四氟乙烯共混物的傅里叶变换拉曼光谱研究
Spectrochimica acta. Part A: Molecular spectroscopy Pub Date : 1994-10-01 DOI: 10.1016/0584-8539(94)80212-2
B.H. Stuart, B.J. Briscoe
{"title":"A Fourier transform Raman spectroscopy study of poly (ether ether ketone)/polytetrafluoroethylene (PEEK/PTFE) blends","authors":"B.H. Stuart,&nbsp;B.J. Briscoe","doi":"10.1016/0584-8539(94)80212-2","DOIUrl":"10.1016/0584-8539(94)80212-2","url":null,"abstract":"<div><p>A study of blends consisting of the polymers poly (ether ether ketone) (PEEK) and polytetrafluoroethylene (PTFE) using Fourier transform Raman spectroscopy is described. The data presented show that the presence of PTFE in the PEEK environment causes the PEEK molecules to become more ordered. The most significant changes to the PEEK molecules are shown to occur with only small additions of PTFE. These observations are compared with reported frictional and hardness data.</p></div>","PeriodicalId":82782,"journal":{"name":"Spectrochimica acta. Part A: Molecular spectroscopy","volume":"50 11","pages":"Pages 2005-2009"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0584-8539(94)80212-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75619061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
Impregnation of ammine aqua cobalt(III) complexes on η-Al2O3 investigated by NIR FT-Raman spectroscopy 用近红外光谱-拉曼光谱研究了氨基-水-钴(III)配合物在η-Al2O3上的浸渍
Spectrochimica acta. Part A: Molecular spectroscopy Pub Date : 1994-10-01 DOI: 10.1016/0584-8539(94)80200-9
Yuying Chen , Jens Hyldtoft , Claus J.H. Jacobsen , Daniel H. Christensen , Ole Faurskov Nielsen
{"title":"Impregnation of ammine aqua cobalt(III) complexes on η-Al2O3 investigated by NIR FT-Raman spectroscopy","authors":"Yuying Chen ,&nbsp;Jens Hyldtoft ,&nbsp;Claus J.H. Jacobsen ,&nbsp;Daniel H. Christensen ,&nbsp;Ole Faurskov Nielsen","doi":"10.1016/0584-8539(94)80200-9","DOIUrl":"10.1016/0584-8539(94)80200-9","url":null,"abstract":"<div><p>The impregnation of ammine aqua cobalt(III) complexes on η-Al<sub>2</sub>O<sub>3</sub> was investigated by NIR FT-Raman spectroscopy and in a few cases by UV—vis spectroscopy and X-ray powder diffraction. The cobalt(III) impregnated alumina samples were prepared from different precursors using different impregnation methods. The observed Raman bands for the impregnated alumina around 522–537 cm<sup>−1</sup> were tentatively assigned to the vibrational modes for the CoOAl or CoO(H)Al bonds (Al = aluminium atom on Al<sub>2</sub>O<sub>3</sub> surface).</p></div>","PeriodicalId":82782,"journal":{"name":"Spectrochimica acta. Part A: Molecular spectroscopy","volume":"50 11","pages":"Pages 1879-1889"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0584-8539(94)80200-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84070668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A Fourier-transform Raman study of the temperature dependence of chromophore conformation in light-adapted and dark-adapted bacteriorhodopsin 光适应和暗适应细菌视紫红质中发色团构象温度依赖性的傅里叶变换拉曼研究
Spectrochimica acta. Part A: Molecular spectroscopy Pub Date : 1994-10-01 DOI: 10.1016/0584-8539(94)80206-8
Gouri S. Jas, Carey K. Johnson
{"title":"A Fourier-transform Raman study of the temperature dependence of chromophore conformation in light-adapted and dark-adapted bacteriorhodopsin","authors":"Gouri S. Jas,&nbsp;Carey K. Johnson","doi":"10.1016/0584-8539(94)80206-8","DOIUrl":"10.1016/0584-8539(94)80206-8","url":null,"abstract":"<div><p>Fourier-transform Raman spectra are reported for bacteriorhodopsin (BR) in its light-adapted and dark-adapted states at room and elevated temperatures. Qualitative changes are observed in the FT-Raman spectrum above the midpoint temperature of the predenaturational transition indicating structural changes and inhomogeneous protein populations. Dark-adapted BR shows an increased all-<em>trans</em> component at 78°C, while light-adapted BR at 78°C is found to contain 13-<em>cis</em> BR, possibly as a result of a reduced extent of light adaptation or a change in protein—chromophore interactions.</p></div>","PeriodicalId":82782,"journal":{"name":"Spectrochimica acta. Part A: Molecular spectroscopy","volume":"50 11","pages":"Pages 1937-1942"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0584-8539(94)80206-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72657279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
An FTIR and FT-Raman study of some novel organo-cadmium compounds 几种新型有机镉化合物的傅里叶变换红外光谱和傅里叶变换拉曼光谱研究
Spectrochimica acta. Part A: Molecular spectroscopy Pub Date : 1994-10-01 DOI: 10.1016/0584-8539(94)80204-1
Matthew J. Almond, Michael P. Beer, Sharon A. Cooke, David A. Rice, Liam A. Sheridan
{"title":"An FTIR and FT-Raman study of some novel organo-cadmium compounds","authors":"Matthew J. Almond,&nbsp;Michael P. Beer,&nbsp;Sharon A. Cooke,&nbsp;David A. Rice,&nbsp;Liam A. Sheridan","doi":"10.1016/0584-8539(94)80204-1","DOIUrl":"10.1016/0584-8539(94)80204-1","url":null,"abstract":"<div><p>Infrared and Raman spectra are reported for the compounds (CH<sub>3</sub>OCH<sub>2</sub>CH<sub>2</sub>CH<sub>2</sub>)<sub>2</sub>Cd (<strong>A</strong>), CH<sub>3</sub>CdOCH<sub>2</sub>CH<sub>2</sub>SCH<sub>3</sub> (<strong>B</strong>) and Cd(OCH<sub>2</sub>CH<sub>2</sub>SCH<sub>3</sub>)<sub>2</sub> (<strong>C</strong>). These spectra demonstrate that, as expected, <strong>A</strong> contains a linear CCdC moiety and <strong>C</strong> a linear OCdO moiety. It is shown that there is no intramolecular bonding between the O and Cd atoms in <strong>A</strong> or between the S and Cd atoms in <strong>B</strong> or <strong>C</strong>. Spectra of <strong>A</strong> have been recorded for all of gas (IR), liquid (Raman) and solid (IR) phases and show that there is no significant change in structure of this molecule on changing phase. A preliminary assessment suggests that none of these compounds are likely to be particularly useful precursors for the formation of cadmium-containing semiconductor materials by MOCVD (Metal Organic Chemical Vapour Deposition).</p></div>","PeriodicalId":82782,"journal":{"name":"Spectrochimica acta. Part A: Molecular spectroscopy","volume":"50 11","pages":"Pages 1919-1925"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0584-8539(94)80204-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87732775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
FT-Raman spectroscopic studies of metal oxalates and their mixtures 金属草酸盐及其混合物的傅里叶拉曼光谱研究
Spectrochimica acta. Part A: Molecular spectroscopy Pub Date : 1994-10-01 DOI: 10.1016/0584-8539(94)80201-7
H.G.M. Edwards, I.R. Lewis
{"title":"FT-Raman spectroscopic studies of metal oxalates and their mixtures","authors":"H.G.M. Edwards,&nbsp;I.R. Lewis","doi":"10.1016/0584-8539(94)80201-7","DOIUrl":"10.1016/0584-8539(94)80201-7","url":null,"abstract":"<div><p>The Raman spectra of a number of Group I and II metal oxalates are presented. From quantitative spectroscopic studies of the pure compounds and of mixtures of calcium, potassium and magnesium oxalates, it has been demonstrated that each component can be determined in the prepared mixtures to better than 2%. Comparisons made with the Raman spectra of lithium and sodium oxalates indicate that there are characteristic differences in the observed spectra of the Group I metal oxalates and that several vibrational bands of C<sub>2</sub>O<sup>2−</sup><sub>4</sub> are sensitive to the cation, being shifted to lower wavenumbers as the cation mass increases from Li to K.</p></div>","PeriodicalId":82782,"journal":{"name":"Spectrochimica acta. Part A: Molecular spectroscopy","volume":"50 11","pages":"Pages 1891-1898"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0584-8539(94)80201-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73240051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 31
Extension of a novel method for the examination of oxidized aluminium surfaces using near infrared (NIR) Fourier transform surface enhanced Raman spectroscopy (FT-SERS) 近红外(NIR)傅里叶变换表面增强拉曼光谱(FT-SERS)检测氧化铝表面新方法的扩展
Spectrochimica acta. Part A: Molecular spectroscopy Pub Date : 1994-10-01 DOI: 10.1016/0584-8539(94)80215-7
J.A. Haigh, P.J. Hendra, W. Forsling
{"title":"Extension of a novel method for the examination of oxidized aluminium surfaces using near infrared (NIR) Fourier transform surface enhanced Raman spectroscopy (FT-SERS)","authors":"J.A. Haigh,&nbsp;P.J. Hendra,&nbsp;W. Forsling","doi":"10.1016/0584-8539(94)80215-7","DOIUrl":"10.1016/0584-8539(94)80215-7","url":null,"abstract":"<div><p>A SERS active substrate is created on a non-SERS active oxidized aluminium foil. Identification of phthalic acid and phenylphosphate using near infrared FT-SERS is made and possible orientations are proposed.</p></div>","PeriodicalId":82782,"journal":{"name":"Spectrochimica acta. Part A: Molecular spectroscopy","volume":"50 11","pages":"Pages 2027-2034"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0584-8539(94)80215-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88113267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Applications of a modulated laser for FT-Raman spectroscopy—1. Removal of thermal backgrounds 调制激光器在傅里叶变换-拉曼光谱中的应用去除热背景
Spectrochimica acta. Part A: Molecular spectroscopy Pub Date : 1994-10-01 DOI: 10.1016/0584-8539(94)80194-0
R. Bennett
{"title":"Applications of a modulated laser for FT-Raman spectroscopy—1. Removal of thermal backgrounds","authors":"R. Bennett","doi":"10.1016/0584-8539(94)80194-0","DOIUrl":"10.1016/0584-8539(94)80194-0","url":null,"abstract":"<div><p>The removal of thermal backgrounds from NIR FT-Raman spectra using a modulated laser is demonstrated. Both synchronous and asynchronous detection of the interferogram is used to show a reduction of the background to within the noise level of the data.</p></div>","PeriodicalId":82782,"journal":{"name":"Spectrochimica acta. Part A: Molecular spectroscopy","volume":"50 11","pages":"Pages 1813-1823"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0584-8539(94)80194-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88355439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
A 13C, 31P and 15N NMR investigation of some 2-substituted-N-phenyl-P,P,P-triphenylphospha-λ5-azenes 一些2-取代n -苯基-P,P,P-三苯基磷酸-λ5-偶氮烯的13C, 31P和15N NMR研究
Spectrochimica acta. Part A: Molecular spectroscopy Pub Date : 1994-09-01 DOI: 10.1016/0584-8539(94)E0090-W
Wojciech Domalewski, Lech Stefaniak, Graham Alan Webb
{"title":"A 13C, 31P and 15N NMR investigation of some 2-substituted-N-phenyl-P,P,P-triphenylphospha-λ5-azenes","authors":"Wojciech Domalewski,&nbsp;Lech Stefaniak,&nbsp;Graham Alan Webb","doi":"10.1016/0584-8539(94)E0090-W","DOIUrl":"10.1016/0584-8539(94)E0090-W","url":null,"abstract":"<div><p><sup>13</sup>C, <sup>31</sup>P and <sup>15</sup>N NMR data are reported for seven 2-substituted-N-phenyl-P,P,P-triphenylphospha-λ<sup>5</sup>-azenes taken at room temperature in acetone-d<sub>6</sub> solutions. Ortho substituents significantly influence <sup>13</sup>C, <sup>31</sup>P, <sup>15</sup>N chemical shifts and <sup>1</sup>J(<sup>31</sup>P<sup>15</sup>N), <sup>3</sup>J(<sup>31</sup>P<sup>13</sup>C) Couplings.</p></div>","PeriodicalId":82782,"journal":{"name":"Spectrochimica acta. Part A: Molecular spectroscopy","volume":"50 10","pages":"Pages 1799-1804"},"PeriodicalIF":0.0,"publicationDate":"1994-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0584-8539(94)E0090-W","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80252494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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