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Effects of number of ring substituents on the physicochemical properties of zinc aminophenoxy phthalocyanine-single walled carbon nanotube conjugate

Paper ID Volume ID Publish Year Pages File Format Full-Text
26779 43976 2014 8 PDF Available
Title
Effects of number of ring substituents on the physicochemical properties of zinc aminophenoxy phthalocyanine-single walled carbon nanotube conjugate
Abstract

•Zinc monoaminophenoxy or zinc tetraaminophenoxy phthalocyanine complexes are linked to single walled carbon nanotubes.•The covalently linked complexes showed a higher electron transfer rate constant and photoinduced electron efficiency when compared to adsorbed complexes.•Zinc monoaminophenoxy phthalocyanine complexes (linked and adsorbed) showed better photophysical and photochemical properties when compared to tetrasubstituted derivatives.•The triplet, singlet oxygen and florescence quantum yields of the phthalocyanine complexes decrease upon linking or adsorption onto single walled carbon nanotubes.

This work reports on the linking of zinc monoaminophenoxy (ZnMAPPc) or zinc tetraaminophenoxy phthalocyanine (ZnTAPPc) complexes to single walled carbon nanotubes (SWCNTs) through either covalent or non-covalent (adsorption) bonding. The functionalized complexes showed better thermal stability when compared to the SWCNT-COOH, ZnMAPPc and ZnTAPPc alone as confirmed by thermogravimetric analyses. The covalently linked ZnMAPc-SWCNT showed higher electron transfer rate constant and photoinduced electron efficiency when compared to adsorbed complexes. ZnMAPPc-SWCNT complexes (linked and adsorbed) showed better photophysical and photochemical properties when compared to ZnTAPPc-SWCNT complexes. The triplet, singlet oxygen and florescence quantum yields of ZnMAPPc (or ZnTAPPc) decrease upon linking or adsorption onto SWCNTs.

Graphical abstractZinc monoaminophenoxy or zinc tetraaminophenoxy phthalocyanine complexes are linked to single walled carbon nanotubes through either covalent or non-covalent (adsorption) bonding. The covalently linked complexes showed a higher electron transfer rate constant and photoinduced electron efficiency than adsorbed complexes.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Single walled carbon nanotubes; Zinc monoaminophenoxy phthalocyanine; Zinc tetraaminophenoxy phthalocyanines; Triplet; Fluorescence and singlet oxygen quantum yields
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Effects of number of ring substituents on the physicochemical properties of zinc aminophenoxy phthalocyanine-single walled carbon nanotube conjugate
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 274, 30 January 2014, Pages 83–90
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us