{"title":"Low temperature fluorescence lifetime of aromatic solutes in 3-methylpentane: investigation using Čerenkov radiation","authors":"J. Mayer, M. Szadkowska-Nicze, J. Kroh","doi":"10.1016/0047-2670(87)87034-X","DOIUrl":"https://doi.org/10.1016/0047-2670(87)87034-X","url":null,"abstract":"","PeriodicalId":16771,"journal":{"name":"Journal of Photochemistry","volume":"36 1","pages":"385-389"},"PeriodicalIF":0.0,"publicationDate":"1987-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80347586","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}
{"title":"Temperature-dependent fluorescence of acrylic polymers containing benzyl groups","authors":"I. F. Piérola, D. Radić, L. Gargallo","doi":"10.1016/0047-2670(87)87032-6","DOIUrl":"https://doi.org/10.1016/0047-2670(87)87032-6","url":null,"abstract":"","PeriodicalId":16771,"journal":{"name":"Journal of Photochemistry","volume":"2012 1","pages":"375-380"},"PeriodicalIF":0.0,"publicationDate":"1987-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88048043","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}
K. Ashikaga, S. Ito, Masahide Yamamoto, Y. Nishijima
{"title":"Photodimerization of dibenz[b,f] azepine derivatives and their reaction intermediates","authors":"K. Ashikaga, S. Ito, Masahide Yamamoto, Y. Nishijima","doi":"10.1016/0047-2670(87)87027-2","DOIUrl":"https://doi.org/10.1016/0047-2670(87)87027-2","url":null,"abstract":"","PeriodicalId":16771,"journal":{"name":"Journal of Photochemistry","volume":"9 1","pages":"321-329"},"PeriodicalIF":0.0,"publicationDate":"1987-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88481148","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}
Journal of PhotochemistryPub Date : 1987-06-01Epub Date: 2002-01-30DOI: 10.1016/0047-2670(87)87005-3
S. Yamamoto, N. Nobusada, Y. Sueishi, N. Nishimura
{"title":"Zinc-photosensitized isomerization of 2-butenes","authors":"S. Yamamoto, N. Nobusada, Y. Sueishi, N. Nishimura","doi":"10.1016/0047-2670(87)87005-3","DOIUrl":"10.1016/0047-2670(87)87005-3","url":null,"abstract":"<div><p>The reactions of the <em>cis</em>- and <em>trans</em>-2-butenes photosensitized by Zn(<sup>3</sup>P<sub>1</sub>) have been studied. The main reaction was cis—trans isomerization. The photostationary [trans]/[cis] ratio was 1.5/1.0 and did not vary with pressure. This ratio is different from those obtained in the mercury- and cadmium-photosensitized reactions. The isomerization of 2-butenes photosensitized by Zn(<sup>3</sup>P<sub>1</sub>) could not be explained in terms of the simple mechanism proposed for the mercury- and cadmium-photosensitized reaction of 2-butenes. Possible mechanisms are discussed.</p></div>","PeriodicalId":16771,"journal":{"name":"Journal of Photochemistry","volume":"38 ","pages":"Pages 55-64"},"PeriodicalIF":0.0,"publicationDate":"1987-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0047-2670(87)87005-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80502427","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}
Journal of PhotochemistryPub Date : 1987-06-01Epub Date: 2002-01-30DOI: 10.1016/0047-2670(87)87008-9
Zbigniew Gasyna, Martin J. Stillman
{"title":"Computer-aided chemistry IV: fast fourier transform analysis of luminescence decay curves using a desk top microcomputer","authors":"Zbigniew Gasyna, Martin J. Stillman","doi":"10.1016/0047-2670(87)87008-9","DOIUrl":"10.1016/0047-2670(87)87008-9","url":null,"abstract":"<div><p>An improved analytical procedure, which uses a fast Fourier transform (FFT) algorithm, has been developed to deconvolute luminescence decay curves. Using this procedure, the non-exponential fluorescence decay curves recorded from the excited singlet state of magnesium tetraphenylporphyrin in the presence of CBr<sub>4</sub> in frozen solution, in which both radiative transfer and electron transfer quench the excited state, have been examined. This procedure eliminates the common “overlap effect” that is inherent in previous uses of FFT methods when applied to the problem of deconvoluting decay curves, through a systematic reconstruction of the input data. The analysis may be performed either in the time domain or in the frequency domain. An interactive program, DECAYFIT, written in Fortran 77 was used to carry out the calculations on the IBM S9001 laboratory microcomputer. The program can be employed to deconvolute both model test data and real data, with a time for the analysis in the range of minutes.</p></div>","PeriodicalId":16771,"journal":{"name":"Journal of Photochemistry","volume":"38 ","pages":"Pages 83-98"},"PeriodicalIF":0.0,"publicationDate":"1987-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0047-2670(87)87008-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77454741","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}
Journal of PhotochemistryPub Date : 1987-06-01Epub Date: 2002-01-30DOI: 10.1016/0047-2670(87)87031-4
Norman S. Allen, Gerald Hayes, Philip N.K. Riley, Andrew M. Richards
{"title":"Spectroscopic properties of a novel fluorescent complex of aluminium and quinizarin","authors":"Norman S. Allen, Gerald Hayes, Philip N.K. Riley, Andrew M. Richards","doi":"10.1016/0047-2670(87)87031-4","DOIUrl":"https://doi.org/10.1016/0047-2670(87)87031-4","url":null,"abstract":"<div><p>The addition of aluminium compounds to 1,4-dihydroxyanthraquinone (quinizarin (QH<sub>2</sub>)) in either aqueous or non-aqueous solutions results in the formation of a highly fluorescent pink-red complex with excitation maxima at 500, 530 and 573 nm and corresponding emission maxima at 585 and 619 nm. Analysis by absorption spectroscopy using mole ratio and continuous variation techniques indicates the formation of 1:1 and 2:1 Al:QH<sub>2</sub> complexes. Fluorescence quantum yields in excess of 0.8 have been measured in <em>n</em>-butanol. Observations on the stability and the spectroscopic properties of the 2:1 complex are presented, together with a plausible structure.</p></div>","PeriodicalId":16771,"journal":{"name":"Journal of Photochemistry","volume":"38 ","pages":"Pages 365-373"},"PeriodicalIF":0.0,"publicationDate":"1987-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0047-2670(87)87031-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72261008","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}
Journal of PhotochemistryPub Date : 1987-06-01Epub Date: 2002-01-30DOI: 10.1016/0047-2670(87)87021-1
A.Ram Reddy, A.Pandu Ranga Reddy
{"title":"Exciplex formation in 2-propanol solutions of imidazo[4,5-f]quinolines","authors":"A.Ram Reddy, A.Pandu Ranga Reddy","doi":"10.1016/0047-2670(87)87021-1","DOIUrl":"10.1016/0047-2670(87)87021-1","url":null,"abstract":"<div><p>The association of the excited state derived from four imidazo[4,5-<em>f</em>]-quinolines with 2-propanol in cyclohexane has been studied. The unusual bathochromic shift and bandwidth of the fluorescence spectra of these heterocyclic compounds in 2-propanol—cyclohexane solutions compared with those obtained in cyclohexane solutions have been attributed to the association of the excited state imidazoquinolines with the 2-propanol molecules. Hydrogen bonding between the imidazole <figure><img></figure>NH moiety of the excited state imidazoquinolines and the 2-propanol is shown to be responsible for the association.</p></div>","PeriodicalId":16771,"journal":{"name":"Journal of Photochemistry","volume":"38 ","pages":"Pages 255-261"},"PeriodicalIF":0.0,"publicationDate":"1987-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0047-2670(87)87021-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84022746","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}
Journal of PhotochemistryPub Date : 1987-06-01Epub Date: 2002-01-30DOI: 10.1016/0047-2670(87)87002-8
Jean Vander Auwera , Michael Herman
{"title":"Spectroscopic investigation of the response of the NO2-N2O4 chemical system to optical laser pumping","authors":"Jean Vander Auwera , Michael Herman","doi":"10.1016/0047-2670(87)87002-8","DOIUrl":"10.1016/0047-2670(87)87002-8","url":null,"abstract":"<div><p>An argon laser beam was used to perturb the NO<sub>2</sub>-N<sub>2</sub>O<sub>4</sub> chemical system. The perturbation was monitored, in different experiments, with the laser-induced fluorescence and the IR optical double-resonance (IODR) techniques. The expected quantum perturbations which involve specific rotational levels in NO<sub>2</sub>, <span><math><mtext>X</mtext></math></span> <sup>2</sup>A<sub>1</sub> were observed. Unexpected chemical effects which involve the ground state concentration of both species and which are attributed to the response of the chemical equilibrium to the optical perturbation were also observed. The IODR results are discussed with the help of a model based on the Beer-Lambert law, which allows the role of the chemical response to be demonstrated.</p></div>","PeriodicalId":16771,"journal":{"name":"Journal of Photochemistry","volume":"38 ","pages":"Pages 15-33"},"PeriodicalIF":0.0,"publicationDate":"1987-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0047-2670(87)87002-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82302344","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}
{"title":"Triplet energies of α,β-unsaturated ketones and esters","authors":"A. Weedon, D. Wong","doi":"10.1016/0047-2670(87)87024-7","DOIUrl":"https://doi.org/10.1016/0047-2670(87)87024-7","url":null,"abstract":"","PeriodicalId":16771,"journal":{"name":"Journal of Photochemistry","volume":"38 1","pages":"289-299"},"PeriodicalIF":0.0,"publicationDate":"1987-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87529069","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}
F. Wilkinson, C. Willsher, J. Bourdelande, J. Font, J. Greuges
{"title":"Photophysical evidence for intramolecular energy transfer in insoluble polymeric benzophenone (benzoylated polystyrene beads)","authors":"F. Wilkinson, C. Willsher, J. Bourdelande, J. Font, J. Greuges","doi":"10.1016/0047-2670(87)87033-8","DOIUrl":"https://doi.org/10.1016/0047-2670(87)87033-8","url":null,"abstract":"","PeriodicalId":16771,"journal":{"name":"Journal of Photochemistry","volume":"15 1","pages":"381-384"},"PeriodicalIF":0.0,"publicationDate":"1987-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73420399","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}