Results 51 to 60 of about 146,026 (303)

Effect of substituents on the 1H-NMR chemical shifts of 3-methylene-2-substituted-1,4-pentadienes [PDF]

open access: yesJournal of the Serbian Chemical Society, 2003
The principle of linear free energy relationships was applied to the 1H chemical shifts of the b-vinyl proton atoms of 3-methylene-2-substituted-1,4-pentadienes.
GORDANA S. USCUMLIC, NATASA V. VALENTIC
doaj  

Synthesis of Functionalized 4,5-Dihydroisoxazoles Decorated with the Dimethylphosphinoyl Group

open access: yesЖурнал органічної та фармацевтичної хімії, 2023
Aim. To synthesize a hybrid molecular platform incorporating dimethylphosphinoyl and 4,5-dihydroisoxazole moieties suitable for the creation of focused combinatorial libraries of compounds. Results and discussion.
Andrii V. Fedyk, Bohdan A. Chalyk
doaj   +1 more source

Bio‐Inspired Magnetically Tunable Structural Colors from Elliptical Self‐Assembled Block Copolymer Microparticles

open access: yesAdvanced Functional Materials, EarlyView.
Cephalopod‐inspired photonic microparticles with dynamic structural coloration are fabricated via confined self‐assembly of linear block copolymers into ellipsoids containing stacked lamellae. Embedded superparamagnetic nanoparticles enable rapid magnetic alignment, restoring vivid, angle‐dependent color.
Gianluca Mazzotta   +8 more
wiley   +1 more source

Reactivity of plasmalogens: kinetics of acid-catalyzed hydrolysis

open access: yesJournal of Lipid Research, 1969
The acid-catalyzed hydrolysis of the α,β-unsaturated ether group of two plasmalogens, lysophosphatidal choline and lysophosphatidal ethanolamine, and several model compounds (isobutyl vinyl ether, 1-butenyl ethyl ether, and dihydropyran) was studied by ...
Michael F. Frosolono, Maurice M. Rapport
doaj   +1 more source

Vinyl Polymerization by Organolithium Compounds

open access: yesThe Journal of the Society of Chemical Industry, Japan, 1960
アルキルまたはアリールリチウムは極性ビニル単量体に対しては反応が激しすぎてあまり有効な重合触媒ではないが,著者らは低温で行なうことにより,また,これらの有機リチウム化合物とトリエチルアルミニウムのat-コンプレックスを用いることにより,メタクリル酸メチル,アクリロニトリル,スチレンなどを適度の速度で重合させることができた。スチレンとメタクリル酸メチルの共重合反応よりこれらはいずれも陰イオン重合であることが明らかになった。また,これらの重合において酸素およびキノン類,フェノール類が重合を抑制する作用をもつことが認められた。次にn-ブチルリチウムによるスチレンの重合の動力学の研究を行ない,TobolskyやWelchなどの報告と比較検討した。また上記の有機リチウム化合物により,低温(-60 ...
Junji Furukawa   +4 more
openaire   +2 more sources

Sensorized Engineered Tissues with Built‐in Thermoregulation and Nutrient Supply

open access: yesAdvanced Functional Materials, EarlyView.
This work introduces a granular hydrogel‐based tissue engineering platform that includes a closed‐loop temperature control to maintain 37°C and sustainably releases nutrients, thereby enabling cells to retain a high viability even if stored at room temperature for up to 24 h.
Antonia Georgopoulou   +5 more
wiley   +1 more source

Bipyridine-porphyrin conjugates : a thesis presented in partial fulfilment of the requirements for the degree of Masterate of Science in Chemistry at Massey University [PDF]

open access: yes, 1998
The research carried out for this thesis comprises an investigation into the synthesis of bipyridyl-bridged porphyrin compounds and their metal complexes.
Allwood, Jacinda Louise
core  

STRUCTURE OF METHYLPHEOPHORBIDE-RCI [PDF]

open access: yes, 1986
he methanolic extract of the cyanobacterium (blue-green alga) Spirulina geitleri has been treated with methanolic acid to convert all chlorophyllous pigments to their methylpheophorbides.
Budzikiewicz H.   +27 more
core   +1 more source

Application of Chitosan/Poly(vinyl alcohol) Stabilized Copper Film Materials for the Borylation of α, β-Unsaturated Ketones, Morita-Baylis-Hillman Alcohols and Esters in Aqueous Phase

open access: yesMolecules, 2023
A chitosan/poly(vinyl alcohol)-stabilized copper nanoparticle (CP@Cu NPs) was used as a heterogeneous catalyst for the borylation of α, β-unsaturated ketones, MBH alcohols, and MBH esters in mild conditions. This catalyst not only demonstrated remarkable
Bojie Li   +6 more
doaj   +1 more source

Parallel 3D Bioprinting on SLIPS‐Microarrays

open access: yesAdvanced Functional Materials, EarlyView.
This work introduces the first truly parallel 3D bioprinting method, enabling both the simultaneous fabrication of hundreds of cell laden hydrogel 3D structures and their HTS in individual liquid compartments. By integrating Digital Light Processing (DLP) stereolithography with functional micropatterns, the platform decouples printing time from array ...
Julius von Padberg   +3 more
wiley   +1 more source

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