期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 27, 页码 7900-7906出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201702484
关键词
gas separation; metal-organic frameworks; molecular switches; photochromism; selectivity
资金
- NSF of China [21661001, 21661002, 51373072, 21363009]
- Natural Science Foundation of Jiangxi Province of China [20143ACB20002, 20151BAB203001]
- Young scientist training program of Jiangxi Province of China [20142BCB23018]
A dual temperature-and light-responsive C2H2/C2H4 separation switch in a diarylethene metal-organic framework (MOF) is presented. At 195 K and 100 kPa this MOF shows ultrahigh C2H2/C2H4 selectivity of 47.1, which is almost 21.4 times larger than the corresponding value of 2.2 at 293 K and 100 kPa, or 15.7 times larger than the value of 3.0 for the material under UV at 195 K and 100 kPa. The origin of this unique control in C2H2/C2H4 selectivity, as unveiled by density functional calculations, is due to a guest discriminatory gate-opening effect from the diarylethene unit.
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