Results 51 to 60 of about 4,019 (241)
, 2016 An efficient synthetic method of fluorenes having an enamine moiety at C-9 methylene bridge is developed from N-sulfonyl-4-biaryl-1,2,3-triazole derivatives via Rh-catalyzed denitrogenative cyclization in a 5-exo mode.
Boram Seo (1652119) +4 more
core +2 more sources
Synthesis of UV-resistant and colorless polyimide films for optoelectrical applications
npj Materials DegradationDue to their excellent mechanical properties and intrinsic flexibility, polyimides (PIs) are promising candidates for optoelectrical applications under harsh conditions such as flexible organic solar cells as well as flexible smart windows, etc.
Le Xi +7 more
doaj +1 more source
On‐Surface Friedel–Crafts Alkylation Through a Stabilized Intermediate Complex
Angewandte Chemie International Edition, EarlyView.On‐surface Friedel–Crafts alkylation is demonstrated on Ag(111) at the single‐molecule level. STM, XPS, and DFT calculations uncover the reaction mechanism and explain the stabilization of the key intermediate, providing insight into noble‐metal‐surface‐mediated Csp3${\rm C}_{sp^{3}}$─Csp2${\rm C}_{sp^{2}}$ coupling. ABSTRACT The incorporation of sp3${\
Paul Schweer +5 more
wiley +1 more source
Palladium-Catalyzed Cycloisomerization of 2‑Ethynylbiaryls to 9‑Methylidene Fluorenes
A palladium-catalyzed cycloisomerization of 2-ethynylbiaryls to 9-methylidene fluorenes is described for the first time. The cycloisomerization of 2-ethynylbiaryls proceeded smoothly in the presence of weak acid at low temperature to afford 9-methylidene
Xiaoqiang Yu (128293) +5 more
core +1 more source
Noninnocent Azo-Aromatic Cobalt(II)-Catalyzed sp3 C–H Alkylation of Fluorenes with Alcohols
Herein, employing well-defined redox noninnocent cobalt(II) complexes an efficient sp3 C–H alkylation of fluorenes using alcohols as alkylating agents to result in alkylated fluorenes is reported.
Kamal (11734959) +1 more
core +1 more source
6,12-Diarylindeno[1,2-b]fluorenes: Syntheses, Photophysics, and Ambipolar OFETs
, 2015 Herein we report the synthesis and characterization of a series of 6,12-diarylindeno[1,2-b]fluorenes (IFs). Functionalization with electron donor and acceptor groups influences the ability of the IF scaffold to undergo two-electron oxidation and ...
Weber, Christopher D. +19 more
core +1 more source
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT Healthcare derived polystyrene waste represents a growing and under addressed fraction of plastic waste streams due to contamination risks and limited recyclability. This study aims to investigate the valorization of waste polystyrene foam through catalytic and noncatalytic pyrolysis pathways to evaluate product yield distribution and identify
Salman Khan +4 more
wiley +1 more source
Carbon Energy, EarlyView.Structural engineering of conjugated conductive polymer binders enables integrated electronic transport, strong adhesion, and stable electrode interfaces, offering a promising strategy to reduce inactive components and improve the performance of high‐energy lithium batteries.
Fating Wang +7 more
wiley +1 more source
Induction of Cytokinin-Independent Tobacco Tissues by Substituted Fluorenes [PDF]
, 1971 Two morphactins and three aminofluorenes initiated the formation of compact tissue nodules in hormone-dependent tobacco callus cultures. These nodules, upon subculture, behaved like partially transformed plant tumors.
Linsmaier-Bednar, Elfriede M. +1 more
core
Oil & Gas Science and Technology, 2006 Le polyamide 11 est utilisé comme gaine d'étanchéité interne des conduites flexibles de transport de produits pétroliers. Dans certaines conditions d'utilisation, celui-ci subit une dégradation de ses propriétés mécaniques et physico-chimiques initiales.
Ubrich E., Fafet A., Robert E., Serpe G.
doaj +1 more source