Influence of temperature on the synthesis of block copolypeptide templated silica
Journal Title: Science Paper Online - Year 2009, Vol 4, Issue 6
Abstract
By using synthetic block copolypeptide Phe20-b-PBLG50 with the phenyl groups in both segments as a template, anilino-methyl triethoxy silane (AMTS) as an intermedium and benzyl ammine as catalyst, nanoporous silica with novel structure was synthesized at different aged temperature with the aid of π-π interaction. Under ambient condition, silica with unusual interior composite cells was obtained, which was the immobilization and transcription of self-assembly complex vesicles from block copolypeptide; Microporous silica rods were fabricated at 5 ℃, which may result from the rod-like a-helical aggregates of polypeptide; Microporous silica spheres were observed at 50 ℃, which was ascribed to the spherical self-organized structure curled from flexible chains of polypeptide at higher temperature. A new avenue to control nanoporous silica materials with novel interior structures according to the temperature-sensitivity of conformation and self-assembly of copolypeptide scaffolds was proposed.
Authors and Affiliations
Yuping Liu, Xin Tong, Zhurui Shen
Keywords
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