Characterization of amine-functionalized single-walled carbon nanotube-low symmetry phthalocyanine conjugates

Zinc Phthalocyanine–Graphene Hybrid Material for Energy Conversion: Synthesis, Characterization, Photophysics, and Photoelectrochemical Cell Preparation

“…These findings based on the op--tical absorption spectroscopy results not only manifest the efficient formation of ZnPc--graphene, but also give sufficient evidence for ground state electronic interac--tions between the two species within the hybrid material (even though any aggregation of ZnPc that may take place would also result in a similar observation), similarly with other studies based on phthalocyanines covalently grafted to carbon nanotubes. 58,70,71 Insight of the electronic interplay between ZnPc and graphene in the excited state is derived from photolumi--nescence studies. Upon excitation at 350 nm, the strong fluorescence emission of ZnPc 1 at 686 nm was signifi--cantly quenched by the presence of graphene in the ZnPc--graphene hybrid material 2, when measurements performed with matching absorbencies of ZnPc at the excitation wavelength ( Figure 5).…”

The effect of ascorbic acid on the photophysical properties and photodynamic therapy activities of zinc phthalocyanine-single walled carbon nanotube conjugate on MCF-7 cancer cells

“…The D:G ratio (sp 3 :sp 2 carbon ratio) is generally considered as a quality parameter for determining the extent of functionalization of carbon nanotubes material. This is because the G-band is not affected by defects, whereas the D-band is enhanced by the presence of defects [50,51]. Functionalization of SWCNTs is known to enhance the intensity of the D-band, resulting in an increase in the D:G ratio.…”

Comparative electrocatalytic studies of nanocomposites of mixed and covalently linked multiwalled carbon nanotubes and 4-(4,6-diaminopyrimidin-2-ylthio) phthalocyaninato cobalt(II)

“…The CoPyPc was covalently linked to MWCNT-COOH through conversion of the carboxylic acid functional groups of MWCNT to active carbodiimide ester groups [26]. Briefly, MWCNT-COOH (100 mg) were ultrasonicated in 15 ml DMF until an intense black suspension was obtained.…”