Fine Pore-Structure Engineering by Ligand Conformational Control of Naphthalene Diimide-Based Semiconducting Porous Coordination Polymers for Efficient Chemiresistive Gas Sensing |
| |
| Authors: | Dr Ziqian Xue Dr Jia-Jia Zheng Dr Yusuke Nishiyama Dr Ming-Shui Yao Dr Yoshitaka Aoyama Zeyu Fan Dr Ping Wang Prof Takashi Kajiwara Prof Yoshiki Kubota Prof Satoshi Horike Prof Ken-ichi Otake Prof Susumu Kitagawa |
| |
| Institution: | 1. Institute for Integrated Cell-Material Sciences, Kyoto University, Institute for Advanced Study,Kyoto University, Yoshida, Ushinomiya-cho, Sakyo-ku, Kyoto 606-8501 Japan;2. Laboratory of Theoretical and Computational Nanoscience, National Center for Nanoscience and Technology of China, Beijing, 100190 China;3. RIKEN-JEOL Collaboration Center, Yokohama, Kanagawa 230-0045 Japan;4. JEOL Ltd., Musashino, Akishima, Tokyo 196-8558 Japan;5. Department of Physics, Graduate School of Science, Osaka Metropolitan University, 599-8531 Osaka, Japan |
| |
| Abstract: | Exploring new porous coordination polymers (PCPs) that have tunable structure and conductivity is attractive but remains challenging. Herein, fine pore structure engineering by ligand conformation control of naphthalene diimide (NDI)-based semiconducting PCPs with π stacking-dependent conductivity tunability is achieved. The π stacking distances and ligand conformation in these isoreticular PCPs were modulated by employing metal centers with different coordination geometries. As a result, three conjugated PCPs (Co?pyNDI, Ni?pyNDI, and Zn?pyNDI) with varying pore structure and conductivity were obtained. Their crystal structures were determined by three-dimensional electron diffraction. The through-space charge transfer and tunable pore structure in these PCPs result in modulated selectivity and sensitivity in gas sensing. Zn?pyNDI can serve as a room-temperature operable chemiresistive sensor selective to acetone. |
| |
| Keywords: | PCPs/MOFs NDI Semiconductors Sensors 3D electron diffraction (3D ED) |
|
|
