Shao, Jing, Xin Zhao, Xing He, Zhengyin Zhang, and Rongjia Zhai. “Synthesis and Properties of Imidazole-P-Phenothiazine Derivatives As Light-Emitting and Ambipolar Materials”. Asian Journal of Chemistry 26, no. 6 (March 12, 2014): 1637–1640. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/26_7_21.