Professor Wang Chengliang from the School of Optoelectronic Information and Professor Hu Wenping from Tianjin University jointly wrote the title of Chemical Society Reviews (influence factor: 40.182, Chem. Soc. Rev. 2018, 47, 422) of the Royal Society of Chemistry on January 21. For the review article of 'Organic Semiconductor Crystals', the characteristics of molecular arrangement, crystal growth and charge transport of conjugated organic materials were analyzed. The controllable preparation techniques of organic semiconductor crystals were reviewed. The method of promoting charge transfer was summarized from the perspective of device physics. .
It is reported that the review was selected as the inner cover article, for the understanding of the characteristics of organic crystals, the control of morphology and accumulation structure, the identification of microscopic alignment, the charge transport mechanism and the electronic state in the crystal, as well as the crystal growth, device physics, etc. The research in the field has guiding significance. Wang Chengliang is the first author and co-author of the article.
Conjugated organic polymer materials are a kind of functional materials with large conjugated systems and charge delocalization. They can stabilize the electron-loss state, realize charge transport, separation and bonding, etc. Based on these characteristics, conjugated organic polymer materials, Used as a semiconductor material, it has driven the rapid development of organic electronics and flexible electronic devices science and technology such as organic field-effect transistors, light-emitting diodes and solar cells. Single crystals based on organic semiconductor materials for studying the intrinsic properties of materials, revealing structures The relationship between performance and performance, guiding the next step in material design and obtaining high performance devices are of great significance.
Wang Chengliang joined the School of Optics and Electronic Information in 2016 and was selected into the Youth Thousand Talents Program. After joining our school, he will be the molecular design in the field of organic electronics, single crystal, multi-functional micro-nano structure and charge. The accumulated regulatory experience of transmission has expanded into the field of energy storage, and a series of preliminary studies have been carried out in new fields (Adv. Mater. 2016, 28, 9182; Sci. Bull. 2017, 62, 1473; Chin. Chem. Lett. 2018, 29, 232; J. Phys. Chem. C 2018, DOI: 10.1021/acs.jpcc.8b06170) .
Wang Chengliang team obtained the chain polymer and porous crosslinked polymer through further design and synthesis of the previous conjugate system (and pentacene, Adv. Mater. 2016, 28, 9182). The polymer system retained The conjugated system forms π-π stacking, which promotes the characteristics of charge transport and ion transport. At the same time, it improves the stability of the material and inhibits the dissolution of the material, thereby realizing the capacity of the organic sodium ion battery, fast charge performance and long-term cycle performance. This series of work has important scientific significance and application value for promoting the application of conjugated organic materials in the field of energy storage and improving the performance of batteries through molecular design. Among them, chain polymers show good crystallinity, remarkable π –π accumulation, high ion diffusion coefficient (10-9 cm2/s), capacity up to 290 mAh/g, also shows good performance during fast charge (eg 50 A/g, capacity at approximately 172C) Still up to 100 mAh/g, the cycle remains stable for 10,000 cycles. The work was published on the 6th of September in the Chemical Publishing House of the Cell Press Chem (Chem 2018, 4, DOI: 10.1016/j.chempr.2018.08.014) , Impact factor: 14.104) The article deeply analyzes the reasons for the polymer's stacking structure and good electrochemical performance. Dr. Tang Mi is the first author of the article, Wang Chengliang is the author of the communication, and the theoretical calculation of the work has been obtained by Nanjing University Ma Jing. Professor's great help. (Correspondent Zhu Yuling)
Porous cross-linked polymers also exhibit good ion-conducting properties. This work was published on J. Phys. Chem. Lett. 2018, 9, 3205 (influencing factor: 8.709). Li Peiyang, a master student of Lian Pei, is the first in the article. One author, Wang Chengliang and Associate Professor Wang Erjing of Hubei University are co-authors.
