期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 15, 页码 3922-3926出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201709417
关键词
2D carbon materials; graphdiyne oxide; respiratory monitoring; touchless sensors; ultrafast humidity sensing
资金
- National Basic Research Program of China [2016YFA0200104]
- Chinese Academy of Sciences
- National Natural Science Foundation of China [21775151, 21475138, 21790390, 21790391, 21790050, 21435007, 21621062, 21790053]
Graphdiyne oxide (GDO), the oxidized form of graphdiyne (GDY), exhibits an ultrafast humidity response with an unprecedented response speed (ca. 7ms), which is three times faster than that of graphene oxide (GO) with the same thickness and O/C ratio. The ultrafast humidity response of GDO is considered to benefit from the unique carbon hybridization of GDO, which contains acetylenic bonds that are more electron-withdrawing than ethylenic bonds in GO, consequently giving rise to a faster binding rate with water. This distinctive structure-based property enables the fabrication of a novel GDO-based humidity sensor with an ultrafast response speed and good selectivity against other kinds of gas molecules as well as high sensitivity. These properties allow the sensor to accurately monitor the respiration rate change of human and hypoxic rats.
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