Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/161745
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dc.contributor.authorZhang, Yongfengen_US
dc.contributor.authorChen, Xiaohongen_US
dc.contributor.authorXu, Jianrongen_US
dc.contributor.authorZhang, Qinglunen_US
dc.contributor.authorGao, Liangen_US
dc.contributor.authorWang, Zhonghaoen_US
dc.contributor.authorQu, Lunjunen_US
dc.contributor.authorWang, Kaitien_US
dc.contributor.authorLi, Youbingen_US
dc.contributor.authorCai, Zhengxuen_US
dc.contributor.authorZhao, Yanlien_US
dc.contributor.authorYang, Chaolongen_US
dc.date.accessioned2022-09-19T02:44:30Z-
dc.date.available2022-09-19T02:44:30Z-
dc.date.issued2022-
dc.identifier.citationZhang, Y., Chen, X., Xu, J., Zhang, Q., Gao, L., Wang, Z., Qu, L., Wang, K., Li, Y., Cai, Z., Zhao, Y. & Yang, C. (2022). Cross-linked polyphosphazene nanospheres boosting long-lived organic room-temperature phosphorescence. Journal of the American Chemical Society, 144(13), 6107-6117. https://dx.doi.org/10.1021/jacs.2c02076en_US
dc.identifier.issn0002-7863en_US
dc.identifier.urihttps://hdl.handle.net/10356/161745-
dc.description.abstractLong-lived organic room-temperature phosphorescence (RTP) has sparked intense explorations, owing to the outstanding optical performance and exceptional applications. Because triplet excitons in organic RTP experience multifarious relaxation processes resulting from their high sensitivity, spin multiplicity, inevitable nonradiative decay, and external quenchers, boosting RTP performance by the modulated triplet-exciton behavior is challenging. Herein, we report that cross-linked polyphosphazene nanospheres can effectively promote long-lived organic RTP. Through molecular engineering, multiple carbonyl groups (C═O), heteroatoms (N and P), and heavy atoms (Cl) are introduced into the polyphosphazene nanospheres, largely strengthening the spin-orbit coupling constant by recalibrating the electronic configurations between singlet (Sn) and triplet (Tn) excitons. In order to further suppress nonradiative decay and avoid quenching under ambient conditions, polyphosphazene nanospheres are encapsulated with poly(vinyl alcohol) matrix, thus synchronously prompting phosphorescence lifetime (173 ms longer), phosphorescence efficiency (∼12-fold higher), afterglow duration time (more than 20 s), and afterglow absolute luminance (∼19-fold higher) as compared with the 2,3,6,7,10,11-hexahydroxytriphenylene precursor. By measuring the emission intensity of the phosphorescence, an effective probe based on the nanospheres is developed for visible, quantitative, and expeditious detection of volatile organic compounds. More significantly, the obtained films show high selectivity and robustness for anisole detection (7.1 × 10-4 mol L-1). This work not only demonstrates a way toward boosting the efficiency of RTP materials but also provides a new avenue to apply RTP materials in feasible detection applications.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.language.isoenen_US
dc.relationRG3/21en_US
dc.relationMOET2EP10120-0003en_US
dc.relation.ispartofJournal of the American Chemical Societyen_US
dc.rights© 2022 American Chemical Society. All rights reserved.en_US
dc.subjectScience::Chemistryen_US
dc.titleCross-linked polyphosphazene nanospheres boosting long-lived organic room-temperature phosphorescenceen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.identifier.doi10.1021/jacs.2c02076-
dc.identifier.pmid35316063-
dc.identifier.scopus2-s2.0-85127566024-
dc.identifier.issue13en_US
dc.identifier.volume144en_US
dc.identifier.spage6107en_US
dc.identifier.epage6117en_US
dc.subject.keywordsNonradiative Decaysen_US
dc.subject.keywordsPhosphorescence Materialsen_US
dc.description.acknowledgementThis work was financially supported by the National Natural Science Foundation of China (21875025), the Innovation Research Group at Institutions of Higher Education in Chongqing (CXQT19027), the Chongqing Talent Program, the Science and Technology Project of Banan District, the Innovation Support Plan for the Returned Overseas of Chongqing (cx2020052), and the Open Fund of Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates (2021-kllma-03). The research was also supported by the Singapore Ministry of Education Academic Research Funds (RG3/21 and MOET2EP10120-0003).en_US
item.grantfulltextnone-
item.fulltextNo Fulltext-
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