Physicochemical properties of zinc monoamino phthalocyanine conjugated to folic acid and single walled carbon nanotubes
作者:Racheal O. Ogbodu、Edith Antunes、Tebello Nyokong
DOI:10.1016/j.poly.2013.05.025
日期:2013.8
This study reports on the photophysical and photochemical behavior of the conjugates formed by covalent and non-covalent bonding between zinc monoamino phthalocyanine (ZnMAPc) and either single walled carbon nanotubes (SWCNTs) or folic acid (FA). The conjugates were characterized using FTIR, X-ray powder diffractometry, thermogravimetric analyses, transmission electron microscopy and Raman spectroscopy. H-1 NMR and mass spectroscopies were only employed for ZnMAPc-FA conjugate. There was a slight increase in the triplet and singlet oxygen quantum yields on conjugating ZnMAPc to SWCNTs (or FA), while a decrease in the photophysical and photochemical parameters were observed upon adsorption of the ZnMAPc-FA conjugate to SWCNTs. (C) 2013 Elsevier Ltd. All rights reserved.