Paper Title:
Biomimetic Synthesis of Nanoporous Silica Templated by Copolypeptide in the Organic Gel System
  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 .

  Info
Periodical
Solid State Phenomena (Volumes 121-123)
Edited by
Chunli BAI, Sishen XIE, Xing ZHU
Pages
897-900
DOI
10.4028/www.scientific.net/SSP.121-123.897
Citation
Y.P. Liu, Z.R. Shen, L.Y. Li, P.C. Sun, Z. Y. Yuan, T. H. Chen, B.H. Li, D.T. Ding, "Biomimetic Synthesis of Nanoporous Silica Templated by Copolypeptide in the Organic Gel System", Solid State Phenomena, Vols. 121-123, pp. 897-900, 2007
Online since
March 2007
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Price
$32.00
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