Steric-Hindrance-Functionalized Polydiarylfluorenes: Conformational Behavior, Stabilized Blue Electroluminescence, and Efficient Amplified Spontaneous Emission

Lubing Bai, Bin Liu, Yamin Han, Mengna Yu, Jiong Wang, Xinwen Zhang, Changjin Ou, Jinyi Lin, Wensai Zhu, Linghai Xie, Chengrong Yin, Jianfeng Zhao, Jianpu Wang, Donal D.C. Bradley, Wei Huang