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Photophysical behavior of zinc monoaminophthalocyanines linked to mercaptopropionic acid-capped CdTe quantum dots

Paper ID Volume ID Publish Year Pages File Format Full-Text
27342 44017 2011 9 PDF Available
Title
Photophysical behavior of zinc monoaminophthalocyanines linked to mercaptopropionic acid-capped CdTe quantum dots
Abstract

Photosensitizing properties of zinc monoaminophthalocyanine (2) {in the absence or presence of mercaptopropionic acid (MPA) capped CdTe quantum dots (QDs)} were compared with those of mono-aminophenoxy zinc phthalocyanine (3), zinc tetrasulfonated phthalocyanine and zinc phthalocyanine. Complexes 2 and 3 were also linked to the MPA capped CdTe quantum dots through the formation of an amide bond. High triplet state quantum yields were obtained for the linked QD–phthalocyanine derivatives (complexes 2 and 3) compared to when complexes 2 and 3 were mixed with MPA QDs without a chemical bond.

► Zinc monoaminophthalocyanine has been synthesized. ► The new complex was attached to CdTe QDs through an amide bond. ► High triplet yields were obtained for the conjugate. ► Longer triplet lifetimes were observed in DMSO than DMF.

Keywords
Phthalocyanines; Quantum dots; Triplet quantum yields; Singlet oxygen quantum yields; Triplet lifetimes
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Photophysical behavior of zinc monoaminophthalocyanines linked to mercaptopropionic acid-capped CdTe quantum dots
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 220, Issue 1, 30 April 2011, Pages 11–19
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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