Cover picture : a concise method for synthesizing 1,4,8,11-tetraaza-6,13-dioxapentacene derivatives (Asian J. Org. Chem. 10/2013)

• Main Authors: Li, Gang, Long, Guankui, Chen, Wangqiao, Hu, Fangzhong, Chen, Yongsheng, Zhang, Qichun
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2014
• Subjects: DRNTU::Science::Chemistry::Organic chemistry::Organic electrochemistry
• Online Access: https://hdl.handle.net/10356/105915; http://hdl.handle.net/10220/20979
• Institution: Nanyang Technological University

Five substituted tetraazadioxaacenes have been synthesized through the condensation of 2,3,7,8-tetraaminodibenzo-1,4-dioxin tetrahydrochloride and diketones. In their Full Paper on page 852 ff., Qichun Zhang and co-workers shown that these linearly extended molecules have relatively large bandgaps, and some of the compounds have less negative reduction potentials than is predicted by calculations.