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Chinese Science Bulletin

, Volume 57, Issue 33, pp 4322–4327 | Cite as

Formation of silica nanotubes through a TPPS J aggregates template

  • Li Zhang
  • Jian Jiang
  • MingHua Liu
Open Access
Article Progress of Projects Supported by NSFC Special Topic Supramolecular Gel: From Structure to Function

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 4–8 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.

Keywords

J aggregates sol-gel transcription silica nanostructures 

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Copyright information

© The Author(s) 2012

Authors and Affiliations

  1. 1.Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of ChemistryChinese Academy of SciencesBeijingChina
  2. 2.National Center for Nanoscience and TechnologyBeijingChina

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