|
|||||
|
|
Chirality Induction by Formation of Assembled Structures Based on Anion‐Responsive π‐Conjugated Molecules |
|
| Authors: | Prof?Dr Hiromitsu Maeda Wataru Hane Dr Yuya Bando Dr Yoshitaka Terashima Dr Yohei Haketa Hiroshi Shibaguchi Prof?Dr Tsuyoshi Kawai Prof?Dr Masanobu Naito Dr Kazuto Takaishi Prof?Dr Masanobu Uchiyama Dr Atsuya Muranaka |
| Institution: | 1. College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu 525‐8577 (Japan), Fax: (+81)?77‐561‐2659;2. Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma 630‐0192 (Japan);3. Environment and Energy Materials Division, National Institute for Materials Science (NIMS), Tsukuba 305‐4047 (Japan);4. Advanced Elements Chemistry Research Team and Elements Chemistry Laboratory, RIKEN, Wako 351‐0198 (Japan);5. Faculty of Science and Technology,Seikei University, Musashino 180‐8633 (Japan);6. Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113‐0033 (Japan);7. PRESTO, Japan Science and Technology Agency (JST), Kawaguchi 332‐0012 (Japan) |
| Abstract: | Anion‐responsive π‐conjugated compounds having chiral alkyl chains were synthesized. Circular dichroism (CD) and circularly polarized luminescence (CPL) were observed in the solution‐state assemblies of the chiral anion receptors and those of their anion complexes as salts of a planar triazatriangulenium cation. The CD and CPL spectral patterns of the ion‐pair‐based assemblies were completely opposite to those of the anion‐free assemblies, and this suggests that anion binding and subsequent ion pairing change the chirality of the assembly modes. |
| Keywords: | anion receptors chirality ion pairs stacking interactions supramolecular chemistry |