21 Jul 2015, Chemical Communications
Rui Chen, Ru-Qiang Lu, Ke Shi, Fan Wu, Hong-Xun Fang, Zhe-Xuan Niu, Xiao-Yun Yan, Ming Luo, Xin-Chang Wang, Chi-Yuan Yang, Xiao-Ye Wang, Binbin Xu, Haiping Xia, Jian Peib and Xiao-Yu Cao*
Electron-deficient corannulene derivatives incorporating cyano and imide groups into the corannulene core were synthesized, which showed low LUMO (lowest unoccupied molecular orbital) levels and dense convex–concave packing structures in single crystals. These two features help to realize the first n-channel organic field-effect transistors (OFETs) in air based on corannulene derivatives.
03 Jun 2015, Chemical Science
J. Xu, H. D. Yu, L. L. Yang, G. L. Wu, Z. Q Wang, D. Wang, X. Zhang*
Herein, we have developed a one-pot method for the fabrication of one-dimensional core/shell microrods with tunable shell compositions by the introduction of additives. Crystalline dimethyl melamine hydrochloride was utilized as the core, while melamine derivatives with different functional groups, such as pyrene, thiophene and naphthalene diimide, served as additives to regulate the core morphology and were adsorbed as the shell. The length and width of these one-dimensional structures can be tuned by varying the molar ratio of core and shell molecules as well as their total concentration. Through X-ray diffraction, the detailed molecular arrangements within the core of the microrods were revealed, and the selective effect of additives on specific crystal faces was evaluated. It is anticipated that this work may provide a facile approach for the fabrication of one-dimensional functional materials.
10 Feb 2015, Polymer Chemistry
R. C. Fang, H. P. Xu*, W. Cao, L. L. Yang, X. Zhang*
Materials responsive to reactive oxygen species (ROS) at a physiological level are of great significance in diagnostic and therapeutic applications. We have synthesized a water-soluble tellurium-containing hyperbranched polymer and demonstrated that it forms a kind of ROS-responsive aggregate. In aqueous environment, the polymer aggregates can swell under biologically relevant concentration of H2O2, which could be expected to find applications in fields such as elimination of excess ROS.
09 Jan 2015, Chemical Communications
Xiao-Ye Wang, Fang-Dong Zhuang, Xin-Chang Wang, Xiao-Yu Cao*, Jie-Yu Wang* and Jian Pei*
The parent skeleton of BN heterocoronene with three BN units and C3 symmetry was synthesized as a model compound of BN-doped graphene. Further investigation of this graphene-type molecule revealed the important role of BN doping in opening the bandgap and modulating the electronic properties.