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Conformational Control of a Polyether-Linked Porphyrin Dimer Induced by Complexation with a Sodium Cation |
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| Authors: | Shigeyuki Yagi Ryuhei Yamada Norihiro Tsuji Shinji Murakami Toru Takagishi |
| Affiliation: | 1. Department of Applied Materials Science , College of Engineering, Osaka Prefecture University , 1-1 Gakuen-cho, Sakai, Osaka, 599-8531, Japan;2. Department Applied Materials Science , College of Engineering, Osaka Prefecture University , 1-1 Gakuen-cho, Sakai, Osaka, 599-8531, Japan Phone: (+81) 722-52-1161 (ext. 2318 or 3603) Fax: (+81) 722-52-1161 (ext. 2318 or 3603) E-mail: yagi@ams.osakafu-u.ac.jp;3. Department of Applied Materials Science , College of Engineering, Osaka Prefecture University , 1-1 Gakuen-cho, Sakai, Osaka, 599-8531, Japan |
| Abstract: | Abstract A porphyrin dimer with a polyether linkage was newly synthesized and its conformational change triggered by complexation with an sodium cation was examined. It was confirmed by 1H NMR titration experiments that the dimer bearing a pentaoxyehtylene linkage (1b) was effectively formed a 1:1 complex with a sodium perchlorate. A detailed investigation of the CIS values for the protons confirmed that the complex of 1b?Na+ adopts a slipped face-to-face conformation. |
| Keywords: | Porphyrin dimer sodium cation conformational change complexation-induced shift face-to-face conformation |