Spectroscopic behavior of cationic metallophthalocyanines in the presence of anionic quantum dots

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Mopelola Idowu, Tebello Nyokong

Abstract

The interactions and spectroscopic properties between cationic zinc phthalocyanine derivatives (peripherally and non-peripherally tetrasubstituted and peripherally octa substituted with 2-diethylmethylaminoethylsulfanyl (betaTZnPc, alphaTZnPc and betaOZnPc)) and CdTe core quantum dots (QDs) capped with mercaptopropionic acid or thioglycolic acid (represented as CdTe@MPA and CdTe@TGA, respectively) have been studied in methanol:water mixture. Strong coupling of MPcs was deduced from the interaction since the UV-vis spectroscopic studies of the ground state complex formed on mixing both components showed loss of the phthalocyanine monomeric band with the formation of a dimeric band (spectrum of aggregated species). The dimerization constants were of the order of 10(4)M(-1).

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Citations

Mar 13, 2015·Biochemistry. Biokhimii︠a︡·E G MaksimovV Z Paschenko

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