Published June 2019 | Version v1
Journal article Metadata-only

Graphene oxide–metallophthalocyanine hybrids with enhanced singlet oxygen generation

Creators

  • 1. Laboratory of Photochemistry and Nanobiotechnology, University of Brasilia, Brasilia, DF (Brazil)

Description

Graphene oxide (GO) was added to zinc phthalocyanine (ZnPc) and tetra nitro substituted zinc phthalocyanine (ZnPc(NO2)4) solutions to evaluate the photophysical interaction of GO with phthalocyanines. Dimethylformamide (DMF) and acetonitrile (MeCN) were used as solvents. GO quenching is shown to be stronger with ZnPc(NO2)4, presenting a Stern-Volmer (Ksv) constant approximately 10 times higher than ZnPc. The presence of GO and the increase in its concentration demonstrates a different pattern of absorbance for ZnPc(NO2)4. Singlet oxygen generation was found to be higher in DMF than MeCN enhaces with GO present. The overall singlet quantum yield of ZnPc is higher than ZnPc(NO2)4.

Additional details

Identifiers

DOI
10.1016/j.materresbull.2019.02.018;
PII
S0025540818332161;

Publishing Information

Journal Title
Materials Research Bulletin
Journal Volume
114
Journal Page Range
p. 45-51
ISSN
0025-5408
CODEN
MRBUAC

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
55035453
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY;
Descriptors DEI
ACETONITRILE; DIMETHYLFORMAMIDE; GRAPHENE; NITROGEN DIOXIDE; OXYGEN; PHTHALOCYANINES; SOLVENTS; ZINC
Descriptors DEC
AMIDES; CARBON; CHALCOGENIDES; DYES; ELEMENTS; HETEROCYCLIC COMPOUNDS; METALS; NITRILES; NITROGEN COMPOUNDS; NITROGEN OXIDES; NONMETALS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS

Optional Information

Copyright
Copyright (c) 2019 Elsevier Ltd. All rights reserved.