Results 111 to 120 of about 1,254,309 (209)
Chemistry – A European Journal, Volume 32, Issue 41, 3 November 2026.Seven novel supramolecular photosensitizers based on benzo[c][1,2,5]thiadiazole (BTZ) tethered to calix[4]arene (C[4]) scaffolds are reported with facile, scalable, and selective syntheses. Their abilities to produce singlet oxygen have been tested through the photo‐oxidation of α‐terpinene.
Leonardo Amicosante +6 more
wiley +1 more source
The photophysics and photochemistry of aromatic 1,3-dicarbonyl compounds used as UVA sunscreens [PDF]
, 1999 UV radiation can cause harmful effects to human skin, including premature skin ageing and skin cancer. Historically, sunscreens were developed to filter out UVB (290 nm-320 nm), but now the importance of UVA (320 nm-400 nm) sunscreens is realised.
Coultous, Catherine Jane
core
Aggregate, Volume 7, Issue 11, November 2026.A family of APzCN‐scaffold type‐I phototheranostic agents by pairing a strongly electron‐deficient acceptor with tunable arylamine donors was developed. The optimized photosensitizer exhibits efficient pure type‐I reactive oxygen species generation and a high photothermal conversion efficiency of 55.1% under 660 nm irradiation, which achieves lysosomal
Xiaoqian Zhang +8 more
wiley +1 more source
ChemPhotoChem, Volume 10, Issue 11, November 2026.A photophysical study involving 36 carbazole derivatives combines steady‐state/time‐resolved spectroscopy, temperature‐dependent emission, and singlet dioxygen sensitization metrics with conceptual density functional theory calculations. This comprehensive study establishes robust structure–property relationships to guide the rational design of new ...
Franco M. Cabrerizo +8 more
wiley +1 more source
New Materials for Controlled Singlet Oxygen Generation
, 2021 Singlet oxygen is notoriously uncontrollable, suffers from poor selectivity, and has fast decomposition rates in biological media. Across the scientific community, there is an enduring effort to refine singlet oxygen interactions to control its chemistry
Callaghan, Susan
core
ChemPhotoChem, Volume 10, Issue 11, November 2026.Brightly emissive N,O‐chelated benzimidazole‐based boron complexes exhibit high photoluminescence efficiency and characteristic excited‐state dynamics. Steady‐state and time‐resolved spectroscopic studies, supported by theoretical calculations, provide insight into their efficient fluorescence.
Sota Abe +10 more
wiley +1 more source
Singlet oxygen microscope:From phase-separated polymers to single biological cells
, 2004 The lowest excited electronic state of molecular oxygen, singlet molecular oxygen (a 1Δ g), is an intermediate in many chemical and biological processes. Tools and methods have been developed to create singlet-oxygen-based optical images of heterogeneous
Lars Poulsen +19 more
core +1 more source
ChemistrySelect, Volume 11, Issue 41, 3 November 2026.Near‐infrared light is converted into visible emission by lanthanide‐based upconversion particles, enabling indirect excitation of methyl pyropheophorbide‐a, a chlorophyll‐derived photosensitizer prepared from Spirulina. The resulting photosensitized oxidation is consistent with singlet oxygen generation, demonstrating a promising strategy for NIR ...
Ryota Komatsuzaki +6 more
wiley +1 more source
Orchestrating Anion–π+ Interactions to Accelerate Metal‐Free Room‐Temperature Phosphorescence
Angewandte Chemie, Volume 138, Issue 43, 19 October 2026.Tuning anion–π+ interactions in pyridinium iodide contact ion pairs enables ultrafast metal‐free room‐temperature phosphorescence (540–605 nm) with radiative rates up to 5.2×105 s−1. Strong iodide→π+ charge‐transfer coupling, enhanced spin–orbit interactions, and dynamic ion‐pair organization accelerate intersystem crossing and emission, establishing ...
Eetu Hakkarainen +12 more
wiley +2 more sources
ChemistrySelect, Volume 11, Issue 42, 10 November 2026.Photoinduced reactive oxygen species (ROS) from titanium dioxide (TiO2) and zinc oxide (ZnO) ultraviolet (UV) filters can be controlled through particle engineering, surface passivation, and formulation design. This Review links material structure and interfacial chemistry with ROS evaluation and proposes a tiered framework from photoreactivity ...
Chenge Wang
wiley +1 more source