期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 24, 期 41, 页码 10498-10502出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201801639
关键词
anion- interactions; charge transfer; photochromism; polyoxometalates; room-temperature phosphorescence
资金
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB20000000]
- Key Program of Frontier Sciences, CAS [QYZDJ-SSW-SLH033]
- National Natural Science Foundation of China [21521061, 51672271, 21671190, 21403176, 21773246, 21701170]
- Natural Science Foundation of Fujian Province [2006L2005, 2015J05039]
- Chinese Postdoctoral Science Foundation [2016M600509]
Room-temperature phosphorescence (RTP) was realized for the first time in a polyoxometalate-based charge-transfer (CT) hybrid material bearing polyoxometalates (POMs) as electron-donors (D) and rigid naphthalene diimides (NDIs) as electron-acceptors (A), meanwhile, this hybrid material displayed photochromism as well. The significant D-A anion- interaction induced an additional through-space charge-transfer pathway. The resulting suitable D-A CT states can efficiently bridge the relatively large energy gap between the NDI-localized (1)pi-pi* and (3)pi-pi* states and thus trigger the ligand-localized phosphorescence ((3)pi-pi*).
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