Synthesis of a photoresponsive cryptand and its complexations with paraquat and 2,7-diazapyrenium.
A McMurry coupling reaction was used for the efficient synthesis of a bis(m-phenylene)-32-crown-10 based cryptand Z-3 with high yield. This photoresponsive cryptand formed host-guest complexes with paraquat derivative 4 and 2,7-diazapyrenium derivative 5. Z-3, and E-3 exhibited similar binding affinity to the small guest 4, while dramatic changes were observed in the binding affinity to the large guest 5.
Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China.
Jiang-Fei
JF
Xu
Yu-Zhe
YZ
Chen
Li-Zhu
LZ
Wu
Chen-Ho
CH
Tung
Qing-Zheng
QZ
Yang