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Squaraine rotaxane as a reversible optical chloride sensor.
A mechanically interlocked squaraine rotaxane is comprised of a deep-red fluorescent squaraine dye inside a tetralactam macrocycle. NMR studies show that Cl(-) binding to the rotaxane inducesExpand
Thionine-graphene oxide covalent hybrid and its interaction with light.
Graphene oxide sheets (GO) were covalently functionalized with thionine molecules. The obtained hybrid material, Th-GO, was characterized by means of scanning electron microscopy (SEM), AugerExpand
Reduced graphene oxide and porphyrin. An interactive affair in 2-D.
Photoexcited cationic 5,10,15,20-tetrakis(1-methyl-4-pyridinio)porphyrin tetra(p-toluenesulfonate) (TMPyP) undergoes charge-transfer interaction with chemically reduced graphene oxide (RGO).Expand
Thiyl radical interaction with pyrimidine C5-C6 double bond.
Addition and elimination interaction of thiyl radicals with the C5-C6 double bond in pyrimidines was studied by the pulse radiolysis technique in aqueous solution with the use of different monitoringExpand
Photochemistry of far red responsive tetrahydroquinoxaline-based squaraine dyes.
The photochemical and redox properties of two newly synthesized tetrahydroquinoxaline-based squaraine dyes (SQ) are investigated using femto- and nanosecond laser flash photolysis, pulse radiolysis,Expand
Fluorescent H-aggregates of an asymmetrically substituted mono-amino Zn(ii) phthalocyanine.
The photophysical properties of a newly synthesized unsymmetrically substituted zinc phthalocyanine derivative (1) bearing in its peripheral positions six n-hexylsulfanyl substituents and oneExpand
Noncovalent Porphyrin–Graphene Oxide Nanohybrids: The pH-Dependent Behavior
Noncovalent nanohybrids between meso-(p-hydroxyphenyl)porphyrin (TPPH) and graphene oxide (GO) sheets were studied as a function of pH. The overall charge of the TPPH molecule changes betweenExpand
Cationic Porphyrin-Graphene Oxide Hybrid: Donor-Acceptor Composite for Efficient Photoinduced Electron Transfer.
Non-covalent nanohybrids composed of cationic 5,10,15,20-tetra(4-trimethylammoniophenyl)porphyrin tetra(p-toluenesulfonate) (TMAP) and the graphene oxide sheets were prepared under two pH values (6.2Expand
Competitive photosensitized oxidation of tyrosine and methionine residues in enkephalins and their model peptides
Abstract Laser flash photolysis was used to investigate the oxidation of methionine (Met) and tyrosine (Tyr) residues in methionine-enkephalin (MetEnk, TyrGlyGlyPheMet) by the triplet state ofExpand
Photothermal methods as tools for investigation of weakly interacting non-fluorescent phthalocyanines
In this paper, we report the spectroscopic properties of two newly synthesized phthalocyanines when substituted with short and long alkyl chains dissolved in dimethyl sulfoxide. The dyes areExpand