Results 51 to 60 of about 1,900,673 (403)

Studies on Production and Chemical Property of Singlet Oxygen and Superoxide Radical by Dyestuffs

E-Journal of Chemistry, 2009
There are several low lying singlet oxygen (1O2) and superoxide radical (O-2) which are important in photochemical oxidation. In our present analysis we are studying chemical property of singlet oxygen (1O2) and super oxide radical (O-2) and some ...
Vikesh Kumar, M. R. Tripathi, Manish Kumar, Gopal Shukla, Sarvesh Dwivedi, Vandana Sharma   +5 more
doaj   +1 more source

Bactericidal action of photogenerated singlet oxygen from photosensitizers used in plaque disclosing agents. [PDF]

PLoS ONE, 2012
BACKGROUND: Photodynamic therapy (PDT) has been suggested as an efficient clinical approach for the treatment of dental plaque in the field of dental care.
Kirika Ishiyama, Keisuke Nakamura, Hiroyo Ikai, Taro Kanno, Masahiro Kohno, Keiichi Sasaki, Yoshimi Niwano   +6 more
doaj   +1 more source

Persulfate Activation on Crystallographic Manganese Oxides: Mechanism of Singlet Oxygen Evolution for Nonradical Selective Degradation of Aqueous Contaminants.

Environmental Science and Technology, 2018
Minerals and transitional metal oxides of earth-abundant elements are desirable catalysts for in situ chemical oxidation in environmental remediation. However, catalytic activation of peroxydisulfate (PDS) by manganese oxides was barely investigated.
Shishu Zhu, X. Li, Jian Kang, Xiaoguang Duan, Shaobin Wang   +4 more
semanticscholar   +1 more source

Exploring BODIPY Derivatives as Singlet Oxygen Photosensitizers for PDT

Photochemistry and Photobiology, 2020
This minireview is devoted to honoring the memory of Dr. Thomas Dougherty, a pioneer of modern photodynamic therapy (PDT). It compiles the most important inputs made by our research group since 2012 in the development of new photosensitizers based on ...
Ruth Prieto-Montero, A. Prieto-Castañeda, R. Sola-Llano, A. R. Agarrabeitia, D. García‐Fresnadillo, I. López‐Arbeloa, Á. Villanueva, M. Ortiz, Santiago de la Moya, Virginia Martínez-Martínez   +9 more
semanticscholar   +1 more source

Study of Singlet Oxygen Dynamics on Silicon Polymer Matrix

Journal of Analytical Methods in Chemistry, 2019
We report a detailed analysis of singlet oxygen generated from the photofunctional polymer film (PFPF) matrix which is the silicone polymer film (PDMS) embedded with a photosensitizer. Activation and deactivation dynamics of singlet oxygen generated from
Jeong-Wook Hwang, Seung-Jin Jung, Il Heo, Hyun-A Son, Jong-Ho Kim, Kang-Kyun Wang, Yong-Rok Kim   +6 more
doaj   +1 more source

New Insights into the Generation of Singlet Oxygen in the Metal-free Peroxymonosulfate Activation Process: Important Role of Electron-deficient Carbon Atoms.

Environmental Science and Technology, 2019
Nonradical oxidation process via metal-free peroxymonosulfate (PMS) activation has recently attracted considerable attention for organic pollutant degradation, however, the origin of singlet oxygen (1O2) generation still remains controversial.
Yaowen Gao, Zhenhuan Chen, Yue Zhu, Tong Li, Chun Hu   +4 more
semanticscholar   +1 more source

Singlet Oxygen in Plants: Generation, Detection, and Signaling Roles

International Journal of Molecular Sciences, 2020
Singlet oxygen (1O2) refers to the lowest excited electronic state of molecular oxygen. It easily oxidizes biological molecules and, therefore, is cytotoxic.
V. Dmitrieva, E. V. Tyutereva, O. Voitsekhovskaja   +2 more
semanticscholar   +1 more source

Extension of the composite CBS-QB3 method to singlet diradical calculations

, 2007
The composite CBS-QB3 method is widely used to obtain accurate energies of molecules and radicals although its use in the case of singlet diradicals gives rise to some difficulties.
Baptiste Sirjean, Becke, Coote, Cramer, Cramer, Frisch, Gräfenstein, Gräfenstein, Herbinet, Lee, Luo, Manuel F. Ruiz-López, Montgomery, Montgomery, Pedersen, Pierre-Alexandre Glaude, Pittam, Prosen, René Fournet, Schreiner, Sirjean, Tsang, Wijaya, Wood, Ziegler   +24 more
core   +1 more source

Dzyaloshinsky-Moriya antisymmetric exchange coupling in cuprates: Oxygen effects [PDF]

, 2006
We revisit a problem of Dzyaloshinsky-Moriya antisymmetric exchange coupling for a single bond in cuprates specifying the local spin-orbital contributions to Dzyaloshinsky vector focusing on the oxygen term.
A. S. Borovik-Romanov, A. S. Moskvin, A. S. Moskvin, A. S. Moskvin, A. S. Moskvin, F. Keffer, G. Herzberg, H. Eskes, I. E. Dzialoshinskii, K. Yosida, L. Shekhtman, L. Shekhtman, M. D. Lumsden, M. Oshikawa, M. Oshikawa, P. W. Anderson, R. E. Walstedt, S. Renold, T. Moriya, T. Thio, T. Yildirim, V. Y. Yushankhai, W. Koshibae, W. Koshibae, W. Low   +24 more
core   +3 more sources

Photoluminescence dispersion as a probe of structural inhomogeneity in silica

, 2008
We report time-resolved photoluminescence spectra of point defects in amorphous silicon dioxide (silica), in particular the decay kinetics of the emission signals of extrinsic Oxygen Deficient Centres of the second type from singlet and directly-excited ...
Caulfield K J, Fabrizio Messina, Marco Cannas, Maurizio Leone, Michele D’Amico, Moerner W E, Nalwa H S, Pacchioni G, Roberto Boscaino, Stoneham A M   +9 more
core   +1 more source