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Chinese Science Bulletin

, Volume 57, Issue33, pp 43224327

First Online: 12 September 2012Received: 23 May 2012Accepted: 03 July 2012DOI: 10.1007-s11434-012-5432-4

Cite this article as: Zhang, L., Jiang, J.
& Liu, M.
Chin.
Sci.
Bull.
2012 57: 4322.
doi:10.1007-s11434-012-5432-4

Abstract

It is found that 5,10,15,20-tetrakis 4-sulfonatophenyl porphyrin TPPS, which is known to form J aggregates in water under low pH value, acts as a template for the hydrolyzing of organosilane.
The nanotube structures of silica with 48 nm inner diameters are obtained, which is consistent with the height of TPPS J aggregates, indicating that TPPS J aggregates are indeed acting as the template for the sol-gel transcription.
The TPPS J aggregation disappear when the medium pH value is shifted from acidic to basic, consequently formed silica nanostructures are amorphous nanosphere rather than nanofiber structures.
In contrast, the copper phthalocyanine TSCuPc, which does not exist as linear J aggregates, cannot induce the silica to form one dimensional nanofiber structures, implying that the templating effect of TPPS J aggregates for inorganic nanostructures.

KeywordsJ aggregatessol-gel transcriptionsilica nanostructuresThis article is published with open access at Springerlink.com

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Autor: LiZhang - JianJiang - MingHuaLiu

Fuente: https://link.springer.com/



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