Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 윤주영 | * |
dc.date.accessioned | 2019-01-02T16:30:18Z | - |
dc.date.available | 2019-01-02T16:30:18Z | - |
dc.date.issued | 2019 | * |
dc.identifier.issn | 0925-4005 | * |
dc.identifier.other | OAK-24007 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/248086 | - |
dc.description.abstract | 2-(Benzothiazol-2-yl)pyren-1-ol (P3-NS) was developed as a excited-state intramolecular proton transfer (ESIPT)- based sensor for nitroaromatic compounds (NACs). Results of studies of its photophysical and optical properties show that P3-NS exists in various, solvent dependent isomeric forms arising from rotation about the C–C bond connecting the benzothiazole and pyren-1-ol rings and the location of the pyrene-OH proton. The results of density functional theory (DFT) calculations enabled identification of the major structures of P3-NS dissolved in different solvents. Upon electronic excitation in nonpolar or weakly polar solvents, P3-NS undergoes an ESIPT reaction to form a product that only weakly fluoresces. In contrast, P3-NS exists in a strongly fluorescent deprotonated form in highly polar solvents. The results of time-dependent DFT calculations indicate that fluorescence quenching of the product generated by ESIPT reaction of P3-NS is caused by intersystem crossing at a conical intersection between S 1 and T 2 states. The anionic form of P3-NS, present in highly polar solvents, was shown to be a fluorescence sensor for nitroaromatic compounds (NACs). Fluorescence quenching by NACs occurs by protonation of the anionic form of P3-NS (static quenching) and by photoinduced electron transfer from the anionic form to NACs (dynamic quenching). © 2018 Elsevier B.V. | * |
dc.language | English | * |
dc.publisher | Elsevier B.V. | * |
dc.subject | Dynamic quenching | * |
dc.subject | ESIPT | * |
dc.subject | Nitroaromatic compounds | * |
dc.subject | Pyrene | * |
dc.subject | Static quenching | * |
dc.title | 2-(Benzothiazol-2-yl)pyren-1-ol, a new excited state intramolecular proton transfer-based fluorescent sensor for nitroaromatic compounds | * |
dc.type | Article | * |
dc.relation.volume | 280 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 298 | * |
dc.relation.lastpage | 305 | * |
dc.relation.journaltitle | Sensors and Actuators, B: Chemical | * |
dc.identifier.doi | 10.1016/j.snb.2018.10.043 | * |
dc.identifier.wosid | WOS:000450302300037 | * |
dc.identifier.scopusid | 2-s2.0-85055043845 | * |
dc.author.google | Hu Y. | * |
dc.author.google | Joung J.F. | * |
dc.author.google | Jeong J.-E. | * |
dc.author.google | Jeong Y. | * |
dc.author.google | Woo H.Y. | * |
dc.author.google | She Y. | * |
dc.author.google | Park S. | * |
dc.author.google | Yoon J. | * |
dc.contributor.scopusid | 윤주영(7403587371) | * |
dc.date.modifydate | 20240118162450 | * |