In:
Solid State Phenomena, Trans Tech Publications, Ltd., Vol. 121-123 ( 2007-3), p. 897-900
Abstract:
At neutral pH value and room temperature, nanoporous silica has been prepared through
self-organization of synthetic block copolypeptide Poly(ethyl glycol)-b-poly(L-phenylalanine) (MPEG44–b-Phe7) and silicane in the organic gel system. In this system, π-π interaction between
anilino-methyl triethoxy silicane and block copolypeptide MPEG44–b-Phe7 effectively controlled the growth of the silica precursors. SEM images show that the size of silica is relatively uniform with the
length ranging from 20~50 μm and the diameter ranging from 2~5 μm. FT-IR spectra reveals that there exists nanoporous structure in the calcined sample. N2 adsorption-desorption isotherms are
consistent with the results of FT-IR spectra and show a type-IV isotherm with H1-type hysteresis loop, which means the presence of uniform nanoporous structure. This sample has a BET surface area
of 171 m2.g-1 and a pore volume of 0.55 cm3.g-1. The average pore size calculated by BJH method is 10 nm. Our results suggest a new biomimetic avenue for synthesis of nanoporous inorganic materials
templated by the self-organization of copolypeptide .
Type of Medium:
Online Resource
ISSN:
1662-9779
DOI:
10.4028/www.scientific.net/SSP.121-123
DOI:
10.4028/www.scientific.net/SSP.121-123.897
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2007
detail.hit.zdb_id:
2051138-3
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