参考文献：
Band Gap Tunable, Donor-Acceptor-Donor Charge-TransferHeteroquinoid-Based Chromophores: Near InfraredPhotoluminescence and Electroluminescence, Gang Qian, Bo Dai, Min Luo, Dengbin Yu, Jie Zhan, Zhiqiang Zhang, Dongge Ma, Zhi Yuan Wang*, Chem. Mater. 2008, 20, 6208–6216