Results 111 to 120 of about 42,640 (273)

Polyimide Matrix composites: Polyimidesulfone/LARC-TPI (1:1) blend [PDF]

Polyimide matrix composites were fabricated from unidirectional unsized AS-4 carbon fiber and a doped 1:1 blend of two polyimides: benzophenone dianhydride-3,3'-diamino diphenylsulfone (PISO2) and benzophenone dianhydride-3,3'-diamino benzophenone (LARC ...
Baucom, Robert M., Johnston, Norman J., St.clair, Terry L., Towell, Timothy W.   +3 more
core   +1 more source

Photochemical Decatungstate‐Catalyzed Hydroacylation of Maleimides

European Journal of Organic Chemistry, EarlyView.
A photocatalytic protocol to access substituted succinimides via tetra‐n‐butylammonium decatungstate photocatalysis is reported. This direct radical‐driven hydroacylation of a variety of N‐substituted maleimides shows tolerance to various aldehydes (or alkanes), affording differentially substituted succinimides in high yields. Succinimides constitute a
Manos V. G. Lantzanakis, Naya A. Stini, Christoforos G. Kokotos   +2 more
wiley   +1 more source

A π-Extended Donor-Acceptor-Donor Triphenylene Twin linked via a Pyrazine-bridge [PDF]

, 2015
Beta-amino triphenylenes can be accessed via palladium catalyzed amination of the corresponding triflate using benzophe-none imine. Transformation of amine 6 to benzoyl amide 18 is also straightforward and its wide mesophase range demon-strates that the ...
Andrew N. Cammidge, Boden N., Boden N., Bunk O., Bushby R. J., Cammidge A. N., Cammidge A. N., Cammidge A. N., Crank G., Destrade C., Dutta T., Foster E. J., Foster E. J., Frisch M. J., Iino H., Ito S., Kawata K., Kong X., Kong X., Kumar S., Kumar S., Laschat S., Lavigueur C., Lu X., Min Xu, Mori H., Pisula W., Rebecca J. Turner, Sergeyev S., Shklyarevskiy I. O., Sonia Remiro-Buenamañana, Surry D. S., Tracz A., Tsutumo I.-I., Tsutumo I.-I., Weikang Xiao, Wolfe J. P., Xiao W., Xiao Yang, Xiping Jing, Yeh M.-C., Zhang L., Zhang L., Zhiqun He   +43 more
core   +1 more source

Phase‐Transfer‐Catalyzed Interrupted Barton–Zard Reaction Between Electron‐Deficient Indoles and Benzophenone‐Derived Isocyanides

European Journal of Organic Chemistry, EarlyView.
A cascade reaction under phase‐transfer conditions between 3‐nitro indoles and isocyanomethylene dibenzenes affords the construction of pyrrolo[3,4‐b]indole cores. Control experiments provide insight into moderate product yields and clarify why the reaction is not amenable to asymmetric induction. A cascade reaction enabling the construction of pyrrolo[
Ana Mikleušević, Ines Bašić, Mateja Matišić, Josip Rešetar, Matija Gredičak   +4 more
wiley   +1 more source

Naturally Inspired Molecules as Multifunctional Agents for Alzheimer’s Disease Treatment

Molecules, 2016
Alzheimer’s disease (AD) has been defined as a multi-factorial disorder resulting from a complex array of networked cellular and molecular mechanisms. In particular, elevated levels of Aβ protein and its aggregation products in the presence of metal ions
Angela Rampa, Andrea Tarozzi, Francesca Mancini, Letizia Pruccoli, Rita Maria Concetta Di Martino, Silvia Gobbi, Alessandra Bisi, Angela De Simone, Francesco Palomba, Nelsi Zaccheroni, Federica Belluti   +10 more
doaj   +1 more source

Flexible organic room‐temperature phosphorescent materials

FlexMat, EarlyView.
This review highlights recent advances in flexible organic room‐temperature phosphorescent (RTP) materials, covering both organic crystal and polymer systems. It discusses strategies to overcome the inherent rigidity and enhance the mechanical flexibility of organic RTP materials, aiming to enable their practical applications in anti‐counterfeiting ...
Bolun Zhang, Xiaokang Shao, Wenjie Yin, Jiahui Xu, Beishen Wu, Zhongfu An, Huifang Shi   +6 more
wiley   +1 more source

Polymeric foams from cross-linkable poly-N-ary lenebenzimidazoles [PDF]

, 1978
Foamed cross-linked poly-N-arylenebinzimidazoles are prepared by mixing an organic tetraamine and an ortho substituted aromatic dicarboxylic acid anhydride in the presence of a blowing agent, and then heating the prepolymer to a temperature sufficient to
Delano, C. B., Harrison, E. S., Riccitello, S. R.   +2 more
core   +1 more source

Multi‐material and dual‐stimulus coupled actuation micro‐gears for shape–rotation control in intelligent micro‐electro‐mechanical systems

FlexMat, EarlyView.
A multi‐material and dual‐stimulus coupled actuation micro‐gear (MDCAMG) is developed via femtosecond‐laser 3D printing combined with magnetic nanoparticle absorption, enabling integrated environmental sensing and remote actuation at the microscale. The device incorporates a pH‐responsive hydrogel matrix for autonomous swelling/shrinking and a magnetic
Sida Peng, Shengzhi Sun, Jian Li, Yi Zhu
wiley   +1 more source

Heavy atom effects in the Paternò–Büchi reaction of pyrimidine derivatives with 4,4’-disubstituted benzophenones

Beilstein Journal of Organic Chemistry, 2011
The regioselectivity and the photochemical efficiency were investigated in the Paternò–Büchi reaction of 1,3-dimethylthymine (DMT) and 1,3-dimethyluracil (DMU) with benzophenone (1b) and some 4,4’-disubstituted derivatives (dimethoxy (1a), difluoro (1c),
Feng-Feng Kong, Jian-Bo Wang, Qin-Hua Song   +2 more
doaj   +1 more source

Diacetylene‐Functionalized Glycan Mimetics for Receptor‐Mediated Cluster Imprinting in Model Membranes

Macromolecular Rapid Communications, EarlyView.
Diacetylene‐containing glycan mimetics cluster upon selective lectin binding in GUVs. Subsequent irradiation leads to the formation of fluorescent polymer clusters, while non‐clustered glycan mimetics remain unaffected in the membrane. ABSTRACT The glycocalyx, a dense layer of glycoproteins and glycolipids on eukaryotic cells, is essential for cellular
Luca‐Cesare Blawitzki, Lina Charlotte Assenmacher, Nicholas Jäck, Stephan Schmidt, Cornelia Monzel, Laura Hartmann   +5 more
wiley   +1 more source