Wu Changchun, Li Cheng, Yu Xiaobo, Chen Liangliang, Gao Chenying, Zhang Xisha, Zhang Guanxin, Zhang Deqing
Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.
Angew Chem Int Ed Engl. 2021 Sep 20;60(39):21521-21528. doi: 10.1002/anie.202108421. Epub 2021 Aug 23.
A diazirine-based four-armed cross-linker (4CNN) with a tetrahedron geometry is presented for efficient patterning of polymeric semiconductors by photo-induced carbene insertion. After blending of 4CNN with no more than 3 % (w/w), photo-patterning of p-, n-, and ambipolar semiconducting polymers with side alkyl chains was achieved; regular patterns with size as small as 5 μm were prepared with appropriate photomasks after 365 nm irradiation for just 40 s. The interchain packing order and the thin film morphology were nearly unaltered after the cross-linking and the semiconducting properties of the patterned thin films were mostly retained. A complementary-like inverter with a gain value of 112 was constructed easily by two steps of photo-patterning of the p-type and n-type semiconducting polymers. The results show that 4CNN is a new generation of cross-linker for the photo-patterning of polymeric semiconductors for all-solution-processible flexible electronic devices.
本文介绍了一种具有四面体几何结构的基于重氮丙啶的四臂交联剂（4CNN），用于通过光诱导卡宾插入实现聚合物半导体的高效图案化。在将4CNN以不超过3%（w/w）的比例混合后，实现了对带有侧链烷基的p型、n型和双极性半导体聚合物的光图案化；在365nm光照仅40s后，使用合适的光掩模制备出了尺寸小至5μm的规则图案。交联后，链间堆积顺序和薄膜形态几乎未改变，且图案化薄膜的半导体性能大多得以保留。通过对p型和n型半导体聚合物进行两步光图案化，轻松构建了增益值为112的互补型逆变器。结果表明，4CNN是用于全溶液可加工柔性电子器件中聚合物半导体光图案化的新一代交联剂。
