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Significant Enhancement of C 2 H 2 /C 2 H 4 Separation by a Photochromic Diarylethene Unit: A Temperature‐ and Light‐Responsive Separation Switch
Author(s) -
Fan Cong Bin,
Le Gong Le,
Huang Ling,
Luo Feng,
Krishna Rajamani,
Yi Xian Feng,
Zheng An Min,
Zhang Le,
Pu Shou Zhi,
Feng Xue Feng,
Luo Ming Biao,
Guo Guo Cong
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201702484
Subject(s) - diarylethene , photochromism , selectivity , materials science , chemistry , photochemistry , analytical chemistry (journal) , catalysis , organic chemistry
A dual temperature‐ and light‐responsive C 2 H 2 /C 2 H 4 separation switch in a diarylethene metal–organic framework (MOF) is presented. At 195 K and 100 kPa this MOF shows ultrahigh C 2 H 2 /C 2 H 4 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 C 2 H 2 /C 2 H 4 selectivity, as unveiled by density functional calculations, is due to a guest discriminatory gate‐opening effect from the diarylethene unit.