Intrinsic glassy-metallic transport in an amorphous coordination polymer

无定形固体 材料科学 电导率 结晶度 聚合物 纳米技术 导电聚合物 电阻率和电导率 化学物理 复合材料 化学 结晶学 物理化学 物理 量子力学
作者
Jiaze Xie,Simon Ewing,Jan-Niklas Boyn,Alexander S. Filatov,Baorui Cheng,Tengzhou Ma,Garrett L. Grocke,Norman Zhao,Ram Itani,Xiaotong Sun,Himchan Cho,Zhihengyu Chen,Karena W. Chapman,Shrayesh N. Patel,Dmitri V. Talapin,Jiwoong Park,David A. Mazziotti,John S. Anderson
出处
期刊:Nature [Nature Portfolio]
卷期号:611 (7936): 479-484 被引量:48
标识
DOI:10.1038/s41586-022-05261-4
摘要

Conducting organic materials, such as doped organic polymers1, molecular conductors2,3 and emerging coordination polymers4, underpin technologies ranging from displays to flexible electronics5. Realizing high electrical conductivity in traditionally insulating organic materials necessitates tuning their electronic structure through chemical doping6. Furthermore, even organic materials that are intrinsically conductive, such as single-component molecular conductors7,8, require crystallinity for metallic behaviour. However, conducting polymers are often amorphous to aid durability and processability9. Using molecular design to produce high conductivity in undoped amorphous materials would enable tunable and robust conductivity in many applications10, but there are no intrinsically conducting organic materials that maintain high conductivity when disordered. Here we report an amorphous coordination polymer, Ni tetrathiafulvalene tetrathiolate, which displays markedly high electronic conductivity (up to 1,200 S cm-1) and intrinsic glassy-metallic behaviour. Theory shows that these properties are enabled by molecular overlap that is robust to structural perturbations. This unusual set of features results in high conductivity that is stable to humid air for weeks, pH 0-14 and temperatures up to 140 °C. These findings demonstrate that molecular design can enable metallic conductivity even in heavily disordered materials, raising fundamental questions about how metallic transport can exist without periodic structure and indicating exciting new applications for these materials.
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