Professor Deng Yonghui's team of Fudan University has made important progress in the research of supramolecular assembly and synthesis of new semiconductor nanowire gas sensing materials

Supramolecular assembly exists widely in nature and life systems Scientists learn from nature to synthesize a large number of self-assembled nanomaterials with novel structures and unique properties by means of various non covalent bond actions and biomimetic supramolecular assembly As an important kind of nanostructured materials, semiconductor nanowires have become the frontier research topic in the international nanoscience field because of their unique electrical, optical, thermal and electrochemical characteristics Semiconductor nanomaterials and devices involve many disciplines, such as chemistry, materials science, microelectronics, information science and biomedicine, and have wide application prospects in new energy, intelligent nano sensors and other fields It is a common dream for chemists and material scientists to create semiconductor nanowires and their assemblies in a flexible, controllable and large-scale way through the soft chemical synthesis of "bottom-up" supramolecular assembly Recently, Professor Deng Yonghui, Department of chemistry and State Key Laboratory of polymer molecular engineering, Fudan University, has made important progress in the research of amphiphilic block copolymers oriented synthesis of new gas sensitive semiconductor materials The research team directly synthesized three-dimensional equispaced, orthogonal array structure of metal oxide semiconductor nanowires by the collaborative assembly of organic block copolymers and inorganic heteropolyacids, and the material showed excellent gas sensing performance The research results were published in nature materials (DOI: 10.1038 / s41563-019-0542-x) under the title of "synthesis of orthogonally assembled 3D cross stacked metal oxide semiconducting nanowires" It is reported that this achievement is an important research progress of the research team in the design and assembly of block copolymers to synthesize nanostructured materials (especially mesoporous metal oxide materials) for many years Based on the research of peers and research groups, the research team has explored this flexible and controllable 3D supramolecular interface assembly synthesis idea for more than four years, breaking through the bottleneck of traditional complex multi-step synthesis and preparation of nanowire arrays This assembly method provides a new research idea for the creation of novel semiconductor nanowire array, nanowire functional modification (such as in-situ doping, etc.), micro nano device in-situ integration, and lays an important foundation for the development of advanced energy devices, micro nano sensing electronic components, intelligent equipment, etc Deng Yonghui, a professor in the Department of chemistry of Fudan University, is the corresponding author of the paper Ren Yuan, a master and doctoral candidate in 2014, and Zou Yidong, a doctoral student in 2017, are the co first authors of the paper.