主题词：Photodynamic Therapy Research Studies; Photosynthetic Processes and Mechanisms; Photochemistry and Electron Transfer Studies; Photoreceptor and optogenetics research; Skin Protection and Aging; Porphyrin and Phthalocyanine Chemistry; Light effects on plants; bioluminescence and chemiluminescence research; Nanoplatforms for cancer theranostics; DNA and Nucleic Acid Chemistry; Spectroscopy and Quantum Chemical Studies; Photochromic and Fluorescence Chemistry; Algal biology and biofuel production; Radical Photochemical Reactions; DNA Repair Mechanisms; Free Radicals and Antioxidants; melanin and skin pigmentation; Antioxidant Activity and Oxidative Stress; Advanced biosensing and bioanalysis techniques; Marine and coastal ecosystems; Biocrusts and Microbial Ecology; Retinal Development and Disorders; Carcinogens and Genotoxicity Assessment; Molecular Sensors and Ion Detection; Protein Interaction Studies and Fluorescence Analysis