A porphyrin-based near-infrared fluorescent sensor for sulfur ion detection and its application in living cells

Photophysics of chlorin e6: from one- and two-photon absorption to fluorescence and phosphorescence

“…0.3 eV is found by our simulations, probably due to a non-perfect description of the solvent relaxation. 40 Because of the consistent uorescence intensityand the difficulties in measuring phosphorescencein biological and nanomaterials applications of Ce6 and porphyrin derivatives, [69][70][71] it seems unlikely that the emission is due to phosphorescence, and should rather be assigned to the emission from the singlet manifold. This aspect can be ascribed to two factors, rst a non-unitary population of the triplet manifold should be taken into account, leading to a signicant residual population of the singlet manifold, that can relax and lead to emission.…”

An innovative study on the “on–off–on” detection of sulfur ions based on a TSPP–riboflavin fluorescent probe

“…S 2À also causes a series of health problems owing to it having close association with living organisms in a variety of way. 2,3 Doing research about the detection of S 2À has become an important part of environment, human health and food safety for sustainable development. 4 Relevant medical research shows that free S 2À in biological systems is easily transformed into harmful hydrogen sulde at physiological pH value.…”

Enhanced photodynamic therapy and fluorescence imaging using gold nanorods for porphyrin delivery in a novel in vitro squamous cell carcinoma 3D model

“…42 This PS has also been investigated for other biomedical applications including sensing, detection and imaging. [43][44][45][46] The prepared structures were characterized by using absorbance and fluorescence spectroscopy, transmission electron microscopy (TEM), dynamic light scattering (DLS) and zeta potential analysis. The dark toxicity and PDT effects were compared with Au NRs without PAA coating and free TMPyP in 2D monolayer cancer models and 3D compressed collagen constructs of A431 human squamous carcinoma.…”