Results 71 to 80 of about 44,745 (234)
Metal-Oxo Photo-oxidants, Photochemistry and Photophysics of trans-[Os^(VI)(tmc)(O)_2]^(2+)(tmc = 1,4,8,11-tetramethyl-1,4,8,11-tetra-azacyclotetradecane) and trans-[Os^(VI)(CN)_4(O)_2]^(2-) [PDF]
, 1987 trans-[Os^(VI)(tmc)(O)_2]^(2+)(tmc = 1,4,8,11-tetramethyl-1,4,8,11-tetra-azacyclotetradecane) and trans-[Os^(VI)(CN)_4(O)_2]^(2-) are emissive in the solid state and in fluid solutions at room temperature (τ~ 1.0–1.5 µs); the (^3)E_g state of trans-[Os ...
Che, Chi-Ming +3 more
core
Donor–Acceptor Fluorophores for Energy-Transfer-Mediated Photocatalysis [PDF]
, 2018 Triplet–triplet energy transfer (EnT) is a fundamental activation pathway in photocatalysis. In this work, we report the mechanistic origins of the triplet excited state of carbazole-cyanobenzene donor–acceptor (D–A) fluorophores in EnT-based ...
Huang, Jier +7 more
core +3 more sources
Chemistry – A European Journal, EarlyView.One‐pot transition‐metal‐free methods for the synthesis of all three bonds of the alkyne's triple bond are reviewed. After analysis of several named reactions and discussion of improvements, recent advances in the synthesis of alkynes are discussed. Each section contains a proposed reaction mechanism and analysis of the strengths and weaknesses of the ...
Eugene Kim +4 more
wiley +1 more source
Novel Bioactive Multifunctional Polyphenols: A Chemo‐Enzymatic Approach
Chemistry – A European Journal, EarlyView.One‐step synthesis of complex alkyl oxystilbenin glucosides (6‐47% yield) in alcoholic medium. Switching to ter‐BuOH as solvent afforded δ‐Viniferin diglucoside, with high selectivity and high yield (> 90%), that can be upgraded by enzymatic esterification to alkyl δ‐Viniferin diglucosides.
Amandine L. Flourat +8 more
wiley +1 more source
A Practical Synthesis of Bridged Diarylacetylenes [PDF]
, 2006 An efficient and practical synthesis of bridged diarylacetylenes in multigram quantities has been successfully carried out using high-yielding (classical) synthetic methods and readily available starting materials.
Brody, Daniel M. +3 more
core +1 more source
Picosecond Laser Chemistry in Supersonic Jet Beams [PDF]
, 1983 In this review we describe the development and the applications of the picosecond-jet technique, which utilizes a picosecond laser and a supersonically-cold jet beam of large molecules.
Zewail, Ahmed H.
core +1 more source
Chemistry – A European Journal, EarlyView.It is a challenge to improve the selectivity of high‐denticity ligands for Mg2+ over Ca2+. We show that in aryl‐alkynyl derivatives of APTRA, electron‐withdrawing substituents lower the binding affinity for Ca2+ more than Mg2+, making the ligand more selective for Mg2+.
Laura L. Duncan +2 more
wiley +1 more source
Elucidation of the Photorhabdus temperata Genome and Generation of a Transposon Mutant Library To Identify Motility Mutants Altered in Pathogenesis [PDF]
, 2015 The entomopathogenic nematode Heterorhabditis bacteriophora forms a specific mutualistic association with its bacterial partner Photorhabdus temperata.
Abebe-Akele, Feseha +9 more
core +2 more sources
Silent Partners in the Mill: Unveiling the Role of Additives in Mechanochemical Synthesis
Chemistry – A European Journal, EarlyView.Mechanochemistry offers a sustainable, solvent‐free alternative to traditional synthesis, often enhanced by additives in a process known as additive‐assisted grinding. This review discusses how various additives, including liquids, ionic solids, and advanced materials like ionic liquids and piezoelectric compounds, improve reaction efficiency ...
Johanna Breinsperger +3 more
wiley +1 more source
Antioxidants, 2020 The characterization of bioactive resveratrol oligomers extracted from Vitis vinifera canes has been recently reported. Here, we screened six of these compounds (ampelopsin A, trans-ε-viniferin, hopeaphenol, isohopeaphenol, R2-viniferin, and R-viniferin)
Iris Aja +5 more
doaj +1 more source