Tiago Palmeira , David S. Conceição , Diana P. Ferreira , Carla C. Ferreira , Luís F. Vieira Ferreira , Mário N. Berberan-Santos
{"title":"用紫外-可见分光光度计获取长寿命分子的三重-三重吸收光谱和三重寿命","authors":"Tiago Palmeira , David S. Conceição , Diana P. Ferreira , Carla C. Ferreira , Luís F. Vieira Ferreira , Mário N. Berberan-Santos","doi":"10.1016/j.jpap.2024.100226","DOIUrl":null,"url":null,"abstract":"<div><p>A simple method for obtaining triplet-triplet absorption (TTA) spectra and triplet state (T<sub>1</sub>) lifetimes of long-lived triplets is presented and demonstrated with the polycyclic aromatic hydrocarbon coronene (both normal and perdeuterated forms) in a polymer matrix at room temperature. The TTA spectra obtained with a camera flash and a spectrophotometer are noisier but otherwise identical to those obtained with a state-of-the-art flash photolysis apparatus. The triplet lifetimes obtained from transient absorption are identical to the phosphorescence lifetimes of the same samples.</p></div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"20 ","pages":"Article 100226"},"PeriodicalIF":3.2610,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666469024000010/pdfft?md5=a91193d30924bed27f543041c6f9143d&pid=1-s2.0-S2666469024000010-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Obtaining triplet-triplet absorption spectra and triplet lifetimes of long-lived molecules with a UV-Visible spectrophotometer\",\"authors\":\"Tiago Palmeira , David S. Conceição , Diana P. Ferreira , Carla C. Ferreira , Luís F. Vieira Ferreira , Mário N. Berberan-Santos\",\"doi\":\"10.1016/j.jpap.2024.100226\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A simple method for obtaining triplet-triplet absorption (TTA) spectra and triplet state (T<sub>1</sub>) lifetimes of long-lived triplets is presented and demonstrated with the polycyclic aromatic hydrocarbon coronene (both normal and perdeuterated forms) in a polymer matrix at room temperature. The TTA spectra obtained with a camera flash and a spectrophotometer are noisier but otherwise identical to those obtained with a state-of-the-art flash photolysis apparatus. The triplet lifetimes obtained from transient absorption are identical to the phosphorescence lifetimes of the same samples.</p></div>\",\"PeriodicalId\":375,\"journal\":{\"name\":\"Journal of Photochemistry and Photobiology\",\"volume\":\"20 \",\"pages\":\"Article 100226\"},\"PeriodicalIF\":3.2610,\"publicationDate\":\"2024-01-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S2666469024000010/pdfft?md5=a91193d30924bed27f543041c6f9143d&pid=1-s2.0-S2666469024000010-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Photochemistry and Photobiology\",\"FirstCategoryId\":\"2\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2666469024000010\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Photochemistry and Photobiology","FirstCategoryId":"2","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666469024000010","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Obtaining triplet-triplet absorption spectra and triplet lifetimes of long-lived molecules with a UV-Visible spectrophotometer
A simple method for obtaining triplet-triplet absorption (TTA) spectra and triplet state (T1) lifetimes of long-lived triplets is presented and demonstrated with the polycyclic aromatic hydrocarbon coronene (both normal and perdeuterated forms) in a polymer matrix at room temperature. The TTA spectra obtained with a camera flash and a spectrophotometer are noisier but otherwise identical to those obtained with a state-of-the-art flash photolysis apparatus. The triplet lifetimes obtained from transient absorption are identical to the phosphorescence lifetimes of the same samples.
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