Thionated organic compounds as emerging heavy-atom-free photodynamic therapy agents

LA Ortiz-Rodríguez, CE Crespo-Hernández - Chemical Science, 2020 - pubs.rsc.org
This minireview focuses on recent progress in developing heavy-atom-free photosensitizers
based on the thionation of nucleic acid derivatives and other biocompatible organic …

An emerging molecular design approach to heavy-atom-free photosensitizers for enhanced photodynamic therapy under hypoxia

VN Nguyen, S Qi, S Kim, N Kwon, G Kim… - Journal of the …, 2019 - ACS Publications
A novel strategy for designing highly efficient and activatable photosensitizers that can
effectively generate reactive oxygen species (ROS) under both normoxia and hypoxia is …

Single-atom replacement as a general approach towards visible-light/near-infrared heavy-atom-free photosensitizers for photodynamic therapy

J Tang, L Wang, A Loredo, C Cole, H Xiao - Chemical Science, 2020 - pubs.rsc.org
Photodynamic therapy has become an emerging strategy for the treatment of cancer. This
technology relies on the development of photosensitizers (PSs) that convert molecular …

The photophysics of nucleic acids: Consequences for the emergence of life

CL Kufner, DB Bucher, DD Sasselov - ChemSystemsChem, 2023 - Wiley Online Library
Absorption of ultraviolet (UV) radiation can trigger a variety of photophysical and
photochemical reactions in nucleic acids. In the prebiotic era, on the surface of the early …

Electronic relaxation pathways in heavy-atom-free photosensitizers absorbing near-infrared radiation and exhibiting high yields of singlet oxygen generation

LA Ortiz-Rodríguez, SJ Hoehn, A Loredo… - Journal of the …, 2021 - ACS Publications
Heavy-atom-free photosensitizers (HAF-PSs) based on thionation of carbonyl groups of
readily accessible organic compounds are rapidly emerging as a versatile class of …

Redox-Triggered Activation of Heavy-Atom-Free Photosensitizer and Implications in Targeted Photodynamic Therapy

T Banerjee, K Dan, AK Pal, R Bej, A Datta… - ACS Macro …, 2023 - ACS Publications
A strategy for a redox-activatable heavy-atom-free photosensitizer (PS) based on thiolated
naphthalimide has been demonstrated. The PS exhibits excellent reactive oxygen species …

Following excited-state chemical shifts in molecular ultrafast x-ray photoelectron spectroscopy

D Mayer, F Lever, D Picconi, J Metje… - Nature …, 2022 - nature.com
The conversion of photon energy into other energetic forms in molecules is accompanied by
charge moving on ultrafast timescales. We directly observe the charge motion at a specific …

Heavy-atom-substituted nucleobases in photodynamic applications: substitution of sulfur with selenium in 6-thioguanine induces a remarkable increase in the rate of …

KM Farrell, MM Brister, M Pittelkow… - Journal of the …, 2018 - ACS Publications
Sulfur substitution of carbonyl oxygen atoms of DNA/RNA nucleobases promotes ultrafast
intersystem crossing and near-unity triplet yields that are being used for photodynamic …

Design and synthesis of efficient heavy-atom-free photosensitizers for photodynamic therapy of cancer

VN Nguyen, SJ Park, S Qi, J Ha, S Heo, Y Yim… - Chemical …, 2020 - pubs.rsc.org
Novel thiocarbonyl derivatives (NIS and CRNS) with excellent ROS generation abilities are
synthesized and studied as potential photosensitizers for one-and two-photon excited …

Ultrafast processes in upper excited singlet states of free and caged 7-diethylaminothiocoumarin

A Dutta, SK Ghosh, S Mandal… - The Journal of …, 2024 - ACS Publications
The photochemistry and photophysics of thiocarbonyl compounds, analogues of carbonyl
compounds with sulfur, have long been overshadowed by their counterparts. However …