Ma Yudong, Zhou Yecheng, Jin Jianqun, Wang Wei, Liu Xitong, Xu Haixiao, Zhang Jing, Huang Wei
Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors , Institute of Advanced Materials (IAM) , Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , China . Email:
Department of Physics , Southern University of Science and Technology , Shenzhen 518055 , China.
Chem Sci. 2019 Oct 14;10(48):11125-11129. doi: 10.1039/c9sc04807c. eCollection 2019 Dec 28.
Organic cocrystals are formed the self-assembly of donor and acceptor constituents, which are mixed together through weak noncovalent interactions. Although they reveal unique physical features, their synthesis still faces major drawbacks for the introduction of more potential semiconductors. Herein, we first report soluble pentacene derivative (TMTES-P) based complexes, with suitable alkyl terminal groups, enabling the location of 4,8-bis(dicyanomethylene)-4,8-dihydrobenzo[1,2-:4,5-']-dithiophene (DTTCNQ) in the crystal lattice, thereby allowing the cocrystallization of a binary system on demand. To our surprise, varying growth conditions, molecular disorders could be removed due to existing short-contacts as the locking force, and even the carrier charge could be changed. This organic donor-acceptor system presents unconventional insights: charge polarity control over (opto)electronic devices with a supramolecular driving force as the directional alignment guide.
有机共晶体是通过供体和受体成分的自组装形成的，它们通过弱非共价相互作用混合在一起。尽管它们展现出独特的物理特性，但在引入更多潜在半导体时，其合成仍面临重大缺陷。在此，我们首次报道了基于可溶性并五苯衍生物（TMTES-P）的配合物，其具有合适的烷基端基，能够使4,8-双（二氰基亚甲基）-4,8-二氢苯并[1,2-：4,5-']-二噻吩（DTTCNQ）位于晶格中，从而实现二元体系按需共结晶。令我们惊讶的是，改变生长条件时，由于存在短程接触作为锁定力，分子无序可以被消除，甚至载流子电荷也可以改变。这种有机供体-受体体系呈现出非传统的见解：以超分子驱动力作为定向排列导向，对（光）电子器件进行电荷极性控制。
