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Bibliographic Record
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- Material Type
- 文書・図像類
- Author/Editor
- 金子, 芳郎
- Author Heading
- Publication, Distribution, etc.
- Alternative Title
- Preparation of polysilsesquioxanes with hierarchical structures and their functionalization
- Text Language Code
- jpn
- Target Audience
- 一般
- Note (General)
- 2009-2010年度科学研究費補助金(若手研究(B))研究成果報告書 課題番号：21750127 研究代表者：金子芳郎 (鹿児島大学理工学研究科（工学系）准教授)キラル基含有オルガノトリアルコキシシランとアミノ基含有オルガノトリアルコキシシランの混合物の共重合（ゾル-ゲル反応）を行ったところ、ラダー構造やヘキサゴナル積層構造を形成することに加えて、キラルなコンフォメーションを有するポリシルセスキオキサンが得られることを見出した。また、この材料はアキラルなイオン性ポルフィリンのキラル会合体形成のためのテンプレートとしても働くことを見出した。In this study, we prepared ladder-like polysilsesquioxanes (PSQs) containing chiral and ammonium chloride groups as side-chains, forming chiral conformations and hexagonal stacking structures. This was achieved by sol-gel copolycondensation of chiral organotriethoxysilane and 3-aminopropyltriethoxysilane in a mixed solvent of aqueous hydrochloric acid and methanol. The structures of the resulting products were characterized by 1H NMR, IR, 29Si NMR, static light scattering (SLS), X-ray diffraction (XRD), vibrational circular dichroism (VCD) measurements. In addition, we investigated the formation of chiral aggregates of anionic porphyrin such as tetraphenylporphine tetrasulfonic acid (TPPS) using the resulting PSQs. The electronic circular dichroism (ECD) and UV-Vis spectra of aqueous mixtures of TPPS/PSQs indicated the formation of chiral H-aggregates of TPPS along the ammonium groups as side-chains of the PSQs.