Photoinactivation of Salmonella enterica (serovar Typhimurium) by tetra-cationic porphyrins containing peripheral [Ru (bpy) 2Cl]+ units

PJ Gonçalves, FC Bezzerra, AV Teles… - … of Photochemistry and …, 2020 - Elsevier
In the last years, antimicrobial photodynamic therapy (aPDT) has been considered as one
important alternative to be used in antimicrobial treatments. In the present work we report the …

Synergic vascular photodynamic activity by methylene blue-curcumin supramolecular assembly

RC Silva, HH Buzzá, ESA Ducas, KT Oliveira… - … Acta Part A: Molecular …, 2023 - Elsevier
A supramolecular assembly was obtained by combining methylene blue (MB) with a natural
plant extract, curcumin (Curc), in a stoichiometric ratio of 1: 4 in aqueous solution (90 …

[HTML][HTML] Daylight photodynamic inactivation of cattle tick Rhipicephalus microplus by porphyrins: An alternative for the ectoparasite control

ICP Gomes, LDA Divino, FM Rodrigues… - … of Photochemistry and …, 2024 - Elsevier
The bovine tick Rhipicephalus microplus, a primary ectoparasite of veterinary concern,
contributes significantly to disease transmission and reduced cattle productivity, resulting in …

Effect of interaction with micelles on the excited-state optical properties of zinc porphyrins and J-aggregates formation

PJ Gonçalves, DS Corrêa, PL Franzen… - … Acta Part A: Molecular …, 2013 - Elsevier
This work reports on the photophysical properties of zinc porphyrins meso-tetrakis
methylpyridiniumyl (Zn2+ TMPyP) and meso-tetrakis sulfonatophenyl (Zn2+ TPPS) in …

pH tolerant metal ion controlled luminescence behaviour of supramolecular assembly and its application in bioimaging and supramolecular logic gate

N Prasad, S Shelar, M Sayed - Journal of Molecular Liquids, 2023 - Elsevier
Developing intelligent supramolecular assemblies endowed with highly tunable optical
properties has been a challenge. Herein, we demonstrate pH tolerant metal ion controlled …

Spectroscopic insights into BSA-mediated deaggregation of m-THPC

A Kolman, T Pedzinski, A Lewandowska-Andralojc - Scientific Reports, 2024 - nature.com
Abstract Meta-tetra (hydroxyphenyl) chlorin (m-THPC) is among the most potent
photosensitizers, known for its high singlet oxygen generation efficiency. However, its …

[HTML][HTML] Excited states absorption spectra of porphyrins–solvent effects

NMB Neto, DS Correa, L De Boni, GG Parra… - Chemical Physics …, 2013 - Elsevier
We propose a combination of different techniques to obtain the absorption cross-section
spectra of triplet-and singlet-states in porphyrin-like molecules. Two extensions of the Z-scan …

Acridine orange interaction with DNA: Effect of ionic strength

AM Amado, WM Pazin, AS Ito, VA Kuzmin… - … et Biophysica Acta (BBA …, 2017 - Elsevier
Background The study of acridine orange (AO) spectral characteristics and the quenching of
its singlet and triplet excited states by TEMPO radical at its binding to DNA in the function of …

Cell Survival and Altered Gene Expression Following Photodynamic Inactivation of Paracoccidioides brasiliensis

LM Almeida, FF Zanoelo, KP Castro… - Photochemistry and …, 2012 - Wiley Online Library
Paracoccidioidomycosis (PCM) is a systemic mycosis caused by Paracoccidioides
brasiliensis. Currently, the treatment approach involves the use of antifungal drugs and …

[HTML][HTML] Photocytotoxicity of a cyanine dye with two chromophores toward melanoma and normal cells

LS Murakami, LP Ferreira, JS Santos… - … et Biophysica Acta (BBA …, 2015 - Elsevier
Background Due to high optical absorption, triplet quantum yield and affinity to biological
structures bichromophoric cyanine dyes (BCDs) can be considered promising sensitizers for …