dc.contributor.author |
Mongwaketsi, N
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dc.contributor.author |
Ndungu, PG
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dc.contributor.author |
Nechaev, A
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dc.contributor.author |
Maaza, M
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dc.contributor.author |
Sparrow, R
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dc.date.accessioned |
2010-08-26T14:46:02Z |
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dc.date.available |
2010-08-26T14:46:02Z |
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dc.date.issued |
2010-01 |
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dc.identifier.citation |
Mongwaketsi, N, Ndungu, PG et al. 2010. Ionic self-assembly of porphyrin nanostructures on the surface of charge-altered track-etched membranes. Journal of Porphyrins and Phthalocyanines, Vol. 14(5), pp 446-451 |
en |
dc.identifier.issn |
1088-4246 |
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dc.identifier.uri |
http://www.worldscinet.com/jpp/14/1405/S1088424610002276.html
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dc.identifier.uri |
http://hdl.handle.net/10204/4218
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dc.description |
Copyright: 2010 Wiley-Blackwell. This is the post print version. The definitive version is published in the Journal of Porphyrins and Phthalocyanines, Vol. 14(5), pp 446-451 |
en |
dc.description.abstract |
Track-etched polymer membranes are typically used as templates in the synthesis of various nanowires or nanotubes arrays. The unique advantages of track-etched membranes, such as uniform pore structure, excellent porosity, easily tailored pore sizes, and a well characterized surface chemistry, may find use in self-assembly strategies where colloidal nanostructures can be tethered to a suitable substrate to produce devices of interest. Meso-tetrakis(4-phenylsulfonicacid)porphyrin dihydrochloride and Sn(IV) tetrakis(4-pyridyl)porphyrin were used to synthesize ionic self-assembled porphyrin nanorods. The track-etched membranes surface charge was changed from negative to positive using polyethyleneimine. The porphyrin nanorods were either filtered through or self-assembled onto the surface of track-etched membranes. Comparisons were made with track-etched membranes modified with, and without, poly ethyleneimine. Assembly of the porphyrin nanotubes only occurred on the surface of positively charged track-etched membranes, and filtration of the porphyrin nanorods produced a mesh-like structure on the surface of the membrane irrespective of the track-etched membrane pore diameter. In each case the characteristic absorbance profiles of the porphyrin nanorods was maintained. Transmission electron microscopy, scanning electron microscopy, atomic force microscopy, and UV-vis spectroscopy were used to characterize the various systems. |
en |
dc.language.iso |
en |
en |
dc.publisher |
Wiley-Blackwell |
en |
dc.subject |
Porphyrin nanotubes |
en |
dc.subject |
Poly-(ethylene-terephthalate) |
en |
dc.subject |
Consolidated nanomaterial |
en |
dc.subject |
UV-vis spectroscopy |
en |
dc.subject |
Atomic force microscopy |
en |
dc.title |
Ionic self-assembly of porphyrin nanostructures on the surface of charge-altered track-etched membranes |
en |
dc.type |
Article |
en |
dc.identifier.apacitation |
Mongwaketsi, N., Ndungu, P., Nechaev, A., Maaza, M., & Sparrow, R. (2010). Ionic self-assembly of porphyrin nanostructures on the surface of charge-altered track-etched membranes. http://hdl.handle.net/10204/4218 |
en_ZA |
dc.identifier.chicagocitation |
Mongwaketsi, N, PG Ndungu, A Nechaev, M Maaza, and R Sparrow "Ionic self-assembly of porphyrin nanostructures on the surface of charge-altered track-etched membranes." (2010) http://hdl.handle.net/10204/4218 |
en_ZA |
dc.identifier.vancouvercitation |
Mongwaketsi N, Ndungu P, Nechaev A, Maaza M, Sparrow R. Ionic self-assembly of porphyrin nanostructures on the surface of charge-altered track-etched membranes. 2010; http://hdl.handle.net/10204/4218. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Mongwaketsi, N
AU - Ndungu, PG
AU - Nechaev, A
AU - Maaza, M
AU - Sparrow, R
AB - Track-etched polymer membranes are typically used as templates in the synthesis of various nanowires or nanotubes arrays. The unique advantages of track-etched membranes, such as uniform pore structure, excellent porosity, easily tailored pore sizes, and a well characterized surface chemistry, may find use in self-assembly strategies where colloidal nanostructures can be tethered to a suitable substrate to produce devices of interest. Meso-tetrakis(4-phenylsulfonicacid)porphyrin dihydrochloride and Sn(IV) tetrakis(4-pyridyl)porphyrin were used to synthesize ionic self-assembled porphyrin nanorods. The track-etched membranes surface charge was changed from negative to positive using polyethyleneimine. The porphyrin nanorods were either filtered through or self-assembled onto the surface of track-etched membranes. Comparisons were made with track-etched membranes modified with, and without, poly ethyleneimine. Assembly of the porphyrin nanotubes only occurred on the surface of positively charged track-etched membranes, and filtration of the porphyrin nanorods produced a mesh-like structure on the surface of the membrane irrespective of the track-etched membrane pore diameter. In each case the characteristic absorbance profiles of the porphyrin nanorods was maintained. Transmission electron microscopy, scanning electron microscopy, atomic force microscopy, and UV-vis spectroscopy were used to characterize the various systems.
DA - 2010-01
DB - ResearchSpace
DP - CSIR
KW - Porphyrin nanotubes
KW - Poly-(ethylene-terephthalate)
KW - Consolidated nanomaterial
KW - UV-vis spectroscopy
KW - Atomic force microscopy
LK - https://researchspace.csir.co.za
PY - 2010
SM - 1088-4246
T1 - Ionic self-assembly of porphyrin nanostructures on the surface of charge-altered track-etched membranes
TI - Ionic self-assembly of porphyrin nanostructures on the surface of charge-altered track-etched membranes
UR - http://hdl.handle.net/10204/4218
ER -
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en_ZA |