Results 61 to 70 of about 1,900,673 (403)

Direct measurement of singlet oxygen produced by four chlorin-ringed chlorophyll species in acetone solution [PDF]

, 2010
We developed an optical system to detect singlet oxygen produced by chlorin-ringed chlorophyll (Chl) species, i.e., Chl a, Chl b, Chl d, and di-vinyl-Chl a, with a high sensitivity and examined the relationship between molecular structures and reaction ...
Mimuro, Mamoru, Okazaki, Shigetoshi, Tomo, Tatsuya   +2 more
core   +2 more sources

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

Atmospheric air-phase singlet oxygen generator for practical multifunctional applications

Научно-технический вестник информационных технологий, механики и оптики
Singlet oxygen is a metastable reactive oxygen species involved in numerous biochemical reactions and physiological processes. This suggests its potential applicability in addressing practical challenges in medicine and human safety. Due to its oxidative
L. L. Khomutinnikova, E. P. Bykov, S. A. Plyastsov, S. K. Evstropiev, I. K. Meshkovskii, S. G. Zhuravskii, V. N. Baushev   +6 more
doaj   +1 more source

Characterization of singlet oxygen-accumulating mutants isolated in a screen for altered oxidative stress response in Chlamydomonas reinhardtii

BMC Plant Biology, 2010
Background When photosynthetic organisms are exposed to harsh environmental conditions such as high light intensities or cold stress, the production of reactive oxygen species like singlet oxygen is stimulated in the chloroplast.
Eggen Rik IL, Fischer Beat B, Niyogi Krishna K   +2 more
doaj   +1 more source

Generation of superoxide and singlet oxygen from α-tocopherolquinone and analogues. [PDF]

, 2007
Three potential routes to generation of reactive oxygen species from a tocopherolquinone have been identified. The quinone of the water-soluble vitamin E analogue Trolox C (Trol-Q) is reduced by hydrated electron and isopropanol a hydroxyalkyl radical ...
Bisby, RH, Crisostomo, AG, Moreno, RB, Navaratnam, S, Wilkinson, JA   +4 more
core   +1 more source

Intramolecular Down‐ and Up‐Conversion in Dimeric Tetracene Complexes Centered via Platinum(II) and Palladium(II)

Advanced Functional Materials, EarlyView.
Metal‐tetracene dimeric complexes are synthesized through the pyridyl coordination to either Pt(II) or Pd(II). Photophysical properties are systematically compared as a function of the metal using steady‐state and time‐resolved spectroscopy. The Pt(II) dimer exhibits efficient intramolecular singlet fission and subsequent intramolecular up‐conversion ...
Yifan Bo, Yuxuan Hou, Melchor Matabuena, Rik R. Tykwinski, Dirk M. Guldi   +4 more
wiley   +1 more source

The Singlet-Triplet Pseudo-Jahn-Teller Centers in Copper Oxides [PDF]

, 1998
One of the most exciting features of the hole centers CuO_{4}^{5-} in doped cuprates is an unusually complicated ground state which is the result of the electronic quasi-degeneracy.
A.S. Moskvin, Bacci, Bersuker, Bersuker, Bianconi, Clougherty, Egami, Englman, Ham, Hirsch, Ivanova, Kamimura, Koster, Lupi, Markiewicz, Martindale, Mihailovic, Moskvin, Moskvin, Moskvin, Moskvin, Moskvin, Moskvin, Moskvin, Muller, Opik, Rice, Takata, Vier, Walstedt, Yablokov, Yoshinari, Yoshinari, Yu.D. Panov   +33 more
core   +2 more sources

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Evidence for the Formation of Ozone (or Ozone-Like Oxidants) by the Reaction of Singlet Oxygen with Amino Acids

Journal of Chemistry, 2018
Antibodies or some amino acids, namely, cysteine, methionine, histidine, and tryptophan, were previously reported to catalyse the conversion of singlet oxygen (1O2) to ozone (O3).
George W. Wanjala, Arnold N. Onyango, David Abuga, Calvin Onyango, Moses Makayoto   +4 more
doaj   +1 more source

Immobilized photosensitizers for antimicrobial applications [PDF]

, 2015
Photodynamic antimicrobial chemotherapy (PACT) is a very promising alternative to conventional antibiotics for the efficient inactivation of pathogenic microorganisms; this is due to the fact that it is virtually impossible for resistant strains to ...
Boyle, Ross W., Spagnul, Cinzia, Turner, Lauren C.   +2 more
core   +1 more source