TY - JOUR
T1 - Humidity-Responsive ON/OFF Switching of Gas Inclusion by Using Cooperative Opening/Closing of Heterogeneous Crystalline Cavities in a Peptide NiII Macrocycle
AU - Miyake, Ryosuke
AU - Kuwata, Chika
AU - Ueno, Manami
AU - Yamada, Teppei
N1 - Funding Information:
This research was partly supported by a Grant-in-Aid for Young Scientists (B) to R.M. (Grant No. 25810037) from the Ministry of Education, Culture, Sports, Science and Technology of Japan and JST, PRESTO (JPMJPR151A) to R.M. We thank Prof. Shuichi Hiraoka (The Univ. of Tokyo) for fruitful discussion. We also thank Ms. Ayumi Iwata (Kyushu University), Ms. Tomoko Tanaka, Ms. Mariko Onozawa (Ochanomizu University) for assistance of measurements, and Dr. Kenji Yoza (Bruker A.X.S) for assistance of X-ray measurements.
Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/1/19
Y1 - 2018/1/19
N2 - Humidity-responsive ON/OFF switching of CO2 inclusion, associated with cooperative structural changes of heterogeneous cavities in crystalline peptide NiII macrocycles, 1⋅NO3, is demonstrated. The structural transformation between an “open form” and a “closed form” was caused by reversible water uptake into one of the cavities. The adsorption behavior of CO2 was studied with and without water vapor, combined with gas-composition analysis by using gas chromatography. The studies revealed that the open form of 1⋅NO3 adsorbs CO2 gas up to 34 g mol−1, whereas the closed form adsorbs only a negligible amount of CO2 gas. Also, structural studies (X-ray and IR spectroscopies) and investigation of water-content dependence of CO2 adsorption revealed that the switching of gas inclusion occurred abruptly over a narrow range of water-vapor pressure and was caused by the cooperative opening of vacant space to give the open form due to the structural transformation by water uptake.
AB - Humidity-responsive ON/OFF switching of CO2 inclusion, associated with cooperative structural changes of heterogeneous cavities in crystalline peptide NiII macrocycles, 1⋅NO3, is demonstrated. The structural transformation between an “open form” and a “closed form” was caused by reversible water uptake into one of the cavities. The adsorption behavior of CO2 was studied with and without water vapor, combined with gas-composition analysis by using gas chromatography. The studies revealed that the open form of 1⋅NO3 adsorbs CO2 gas up to 34 g mol−1, whereas the closed form adsorbs only a negligible amount of CO2 gas. Also, structural studies (X-ray and IR spectroscopies) and investigation of water-content dependence of CO2 adsorption revealed that the switching of gas inclusion occurred abruptly over a narrow range of water-vapor pressure and was caused by the cooperative opening of vacant space to give the open form due to the structural transformation by water uptake.
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U2 - 10.1002/chem.201704809
DO - 10.1002/chem.201704809
M3 - Article
C2 - 29193332
AN - SCOPUS:85040781481
SN - 0947-6539
VL - 24
SP - 793
EP - 797
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 4
ER -