Results 131 to 140 of about 158,830 (405)
H2 formation via the UV photo-processing of a-C:H nano-particles [PDF]
, 2015 Context. The photolysis of hydrogenated amorphous carbon, a-C(:H), dust by UV photon-irradiation in the laboratory leads to the release of H2 as well as other molecules and radicals. This same process is also likely to be important in the interstellar medium. Aims.
arxiv +1 more source
Advanced Energy Materials, EarlyView.Five COFs are synthesized through a multicomponent reaction, preserving a similar backbone while introducing varying pore functionalities. All COFs demonstrate excellent chemical stability and sustained H2 production under sunlight for 7‐15 days. The imidazole‐functionalized COF exhibits the highest H2 production, which can be attributed to its high ...
Prasenjit Das +18 more
wiley +1 more source
ChemPlusChem, Volume 87, Issue 12, December 2022., 2022 2‐Hydroxy‐1‐naphthaldehyde oxime was oxidized by a D−A type self cycloaddition to spiro compound. Free reaction energy is calculated at −82.0 kcal/mol indicating its predominance over the intramolecular cyclization of −37.6 kcal/mol. 8‐methoxy substituted oxime is sterically guided to 9‐methoxynaphtho[1,2‐d] instead of spiro adduct resulting to the ...
Demeter Tzeli +4 more
wiley +1 more source
Angewandte Chemie, EarlyView.The spin trapping agent DMPO reacts with nitrate radicals in non‐aqueous environment producing its oxidized adduct DMPOX. The peculiar EPR spectral features of DMPOX can be considered fingerprint of the presence of nitrate radicals. Results support in a more direct way the proposed generation and reactivity of nitrate radicals in heterogeneous ...
Alessia Zollo +5 more
wiley +2 more sources
Molecules, 2018 The mechanisms of the photolysis reactions are studied theoretically at the M06-2X/6-311G(d) level of theory, using the four types of group 14 molecules that have the general structure, Ph3M–M′Ph2Me (M and M′ = Si and Ge), as model ...
Shih-Hao Su, Ming-Der Su
doaj +1 more source
Spectroscopic and Computational Studies of Matrix-Isolated iso-CXBr3 (X=F,Cl,Br): Structure, Properties, and Photochemistry of Substituted Iso-Tribromomethanes [PDF]
, 2012 Iso-polyhalomethanes are important reactive intermediates in the condensed and gas-phase chemistry of halomethanes. Building upon our recent study of iso-bromoform, in this work the substituted iso-tribromomethanes (iso-CXBr3; X = F, Cl, Br) were ...
Esselman, Brian J. +4 more
core +2 more sources
Aggregate, EarlyView.A visualized intelligent light‐triggered phototherapy conversion: from near‐infrared (NIR)‐I fluorescence imaging‐guided photodynamic therapy to NIR‐II fluorescence imaging‐guided photothermal therapy for cascade tumor photoablation. This phototherapeutic modality conversion is achieved by light‐triggered dissociation of nitric oxide of the ...
Lixin Sun +9 more
wiley +1 more source
ChemPhotoChem, Volume 6, Issue 12, December 2022., 2022 Illuminating new paths: Upon irradiation of Bis(acyl)phospine oxide (BAPO) photo‐initiators in aqueous or alcoholic solutions, a long‐lived radical species is formed from the primary phosphorus‐centred radical. This radical species acts as a reductant for metal cations, allowing controlled generation of copper nanoparticles.
Max Schmallegger +2 more
wiley +1 more source
Performance Enhancement of Diffusion-based Molecular Communication with Photolysis [PDF]
arXiv, 2019 Inter-Symbol Interference (ISI) is the main challenge of bio-inspired diffusion-based molecular communication. In real biological systems, the degradation of the remaining molecules from a previous transmission is used to mitigate ISI. While most prior works have proposed the use of enzymes to catalyze the molecule degradation, enzymes also degrade the
arxiv
A Born-Oppenheimer photolysis model of N_2O fractionation [PDF]
, 2003 The isotopically light N_2O produced by microbial activity is thought to be balanced by the return of heavy stratospheric nitrous oxide. The Yung and Miller [1997] method that first explained these trends yields photolytic fractionation factors ∼half ...
Blake, Geoffrey A. +3 more
core