|
|||||
|
|
Optical Properties of Carbazole-Based Photorefractive Polymers |
|
| Authors: | Lianlai Sun Xuan Luo Shufan Chen Yu Fang Qingjun Zhang Linhong Cao |
| Affiliation: | 1. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan, P.R. China;2. Liaoning Research Institute of Light Industry, Shenyang, Liaoning, China;3. Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology and Research Center of Laser Fusion, China Academy of Engineering of Physics, Mianyang, Sichuan, China;4. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan, P.R. China;5. Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology and Research Center of Laser Fusion, China Academy of Engineering of Physics, Mianyang, Sichuan, China |
| Abstract: | The optical properties of several carbazole-based photorefractive polymers which we prepared were determined. Through analysis of the UV-vis spectrum, the ratio of the azo nitrobenzene was adjusted to control the content of azo chromophore functional components. The solid transient fluorescence emission spectra of the photorefractive polymers were tested with a 325 nm emission wavelength. The results showed that the J-aggregates and several large closed-loop structures formed in the photorefractive polymers resulted in a long lifetime of their transient fluorescence. Spin-orbit coupling among the molecules increased the intersystem crossing rate, and induced delayed fluorescence. |
| Keywords: | delayed fluorescence intersystem crossing photorefractive polymers solid transient fluorescence |