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":null,"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":0.0000,"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":"10","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Photochemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0047267087870314","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 10
Abstract
The addition of aluminium compounds to 1,4-dihydroxyanthraquinone (quinizarin (QH2)) 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:QH2 complexes. Fluorescence quantum yields in excess of 0.8 have been measured in n-butanol. Observations on the stability and the spectroscopic properties of the 2:1 complex are presented, together with a plausible structure.