期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 20, 期 8, 页码 2149-2153出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201304544
关键词
bipolar; carbazole; donor-acceptor systems; silanes; bandgap
资金
- National Basic Research Program of China (973 Program) [2013CB834701, 2013CB834800]
- National Science Foundation of China [21174050, 21374038]
- Graduate Innovation Fund of Jilin University [20121044]
The design concept of separation of optical and electrical bandgap for wide bandgap materials is further developed in DCzSiPI. The HOMO/LUMO levels can be tuned by incorporation of PI and DCz substituents. The tetraphenylsilane core avoids the intramolecular charge transfer from DCz to PI (DCz=dimer carbazole, PI=phenanthro[9,10-d]imidazole). The allowed transitions are found to be from HOMO-1 to LUMO providing DCzSiPI with sufficient bandgap.
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