以四肽自组装体为模板制备手性3-氨基苯酚甲醛树脂纳米纤维

Preparation of Chiral 3-Aminophenol-formaldehyde Resin Nanofibers Using the Self-assemblies of Tetrapeptides as Template

采用经典的固相合成法制备了一对烷基取代丙氨酸四肽衍生物对映体,研究了其在不同溶剂中的成胶行为,并以其在甲醇中形成的超分子自组装体为模板,利用溶胶-凝胶法制备了单手螺旋3-氨基苯酚甲醛树脂纳米纤维.利用扫描电子显微镜和透射电子显微镜观察超分子自组装体及3-氨基苯酚甲醛树脂的螺旋形貌,并利用圆二色谱研究其光学性质.研究发现,3-氨基苯酚甲醛树脂纳米纤维既具有纳米尺度的手性,又具有分子尺度的手性.手性从小分子形成的自组装体传递到高分子树脂中.

A pair of tetrapeptide enantiomers derived from alanine was prepared through a classic solid phase peptide synthesis method. Their gel-forming properties were investigated,and their self-assemblies in methanol were selected as the template to prepare 3-aminophenol-formaldehyde resins via a sol-gel process. The obtained resins products were single-handed helical nanofibers characterized by field-emission scanning electron microscopy and transmission electron microscopy. Meanwhile,their optical activities were disclosed by circular dichroism. The research results indicate that 3-aminophenol-formaldehyde resins exhibited chirality both at the nano level and at the molecular level. Chirality transferred from the self-assemblies to the resins successfully.