Studying of photoluminescence property of carbazole unit based push-pull oligomers
Ying Chen,
Ran Lu,
Ning Sui,
Ye Zhang,
Wenyan Wang,
Zhi-hui Kang,
Ying-hui Wang,
Han-zhuang Zhang
Affiliations
Ying Chen
Femtosecond Laser Laboratory, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, P. R. China
Ran Lu
College of Chemistry, Jilin University, Changchun 130012, China
Ning Sui
Femtosecond Laser Laboratory, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, P. R. China
Ye Zhang
Femtosecond Laser Laboratory, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, P. R. China
Wenyan Wang
Femtosecond Laser Laboratory, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, P. R. China
Zhi-hui Kang
Femtosecond Laser Laboratory, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, P. R. China
Ying-hui Wang
Femtosecond Laser Laboratory, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, P. R. China
Han-zhuang Zhang
Femtosecond Laser Laboratory, Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, P. R. China
The photoluminescence (PL) property of two push-pull oligomers named C2B and DC2B, comprising of carbazole and difluoroboron β-diketonate units, were probed by many optical tests. A comparison of the PL property of C2B and DC2B indicated that the introduction of carbazole unit red shifted the spectral feature and accelerated PL relaxation rate. Meanwhile, it also accelerated the rate of intramolecular charge transfer (ICT), the reorganization of excited state and relaxation from the ICT state to the ground state, based on the global analysis of transient absorption data. Finally, C2B and DC2B were mixed together and engineered into white light emitting diode test, showing a correlated color temperatures (CCT) value of 4687 K, indicating their potential in the organic displaying devices.
