Su Yajun, Li Yan, Liu Jiangang, Xing Rubo, Han Yanchun
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China.
Nanoscale. 2015 Feb 7;7(5):1944-55. doi: 10.1039/c4nr05915h.
An organic donor-acceptor cocrystal with an ambipolar transporting property was constructed based on N,N'-bis(1-ethylpropyl)-perylene-3,4,9,10-tetracarboxylic diimide (EP-PDI) and 2,3,6,7,10,11-hexakis-(hexyloxy)-triphenylene (H6TP). The cocrystal with an alternating stacking of H6TP and EP-PDI molecules was formed through both drop-casting and spin-coating processes, especially at the optimized ratios of H6TP/EP-PDI (2/1, 1/1). The formation of the cocrystal was driven by the strong π-π interaction and the weaker steric hindrance, resulting from the smaller side groups, between the donor and acceptor molecules. Field effect transistors (FETs) based on the H6TP/EP-PDI cocrystal exhibited relatively balanced hole/electron transport, with a hole mobility of 1.14 × 10(-3) cm(2) V(-1) s(-1) and an electron mobility of 1.40 × 10(-3) cm(2) V(-1) s(-1).
基于N,N'-双(1-乙基丙基)-苝-3,4,9,10-四羧酸二亚胺(EP-PDI)和2,3,6,7,10,11-六(己氧基)-三亚苯(H6TP)构建了一种具有双极性传输特性的有机供体-受体共晶。通过滴铸和旋涂工艺形成了H6TP和EP-PDI分子交替堆积的共晶，特别是在H6TP/EP-PDI的优化比例(2/1、1/1)下。共晶的形成是由供体和受体分子之间较强的π-π相互作用以及较小侧基导致的较弱空间位阻驱动的。基于H6TP/EP-PDI共晶的场效应晶体管(FET)表现出相对平衡的空穴/电子传输，空穴迁移率为1.14×10(-3) cm(2) V(-1) s(-1)，电子迁移率为1.40×10(-3) cm(2) V(-1) s(-1)。
