Results 51 to 60 of about 3,823 (239)
High Free‐Volume Imidazole‐Based Ionomers for High‐Temperature Proton Exchange Membrane Fuel Cells
Advanced Science, EarlyView.High free‐volume imidazole‐based ionomers (PF4IM‐72) enable enhanced phosphoric acid uptake and efficient proton transport, delivering peak power densities of 0.645 W cm−2 at 160 °C and 0.838 W cm−2 at 200 °C in HT‐PEMFCs. This work highlights a promising platform for next‐generation ionomers with improved high‐temperature performance and stability ...
Ge Chao +7 more
wiley +1 more source
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
Advanced Energy Materials, EarlyView.We identify two decisive levers for SAM interfaces: molecular design (carboxylic acid‐based, phosphonic acid, other anchoring chemistries, and polymeric SAMs) and mixing routes (co‐assembly, in situ assembly, pre‐ and post‐treatment). Coordinated tuning of headgroups and assembly pathways optimises energy alignment and film formation, suppresses ...
Jiaxu Zhang, Bochun Kang, Feng Yan
wiley +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
Advanced Energy Materials, EarlyView.Organic photoelectrochemical cells based on π‐conjugated semiconductors offer a versatile platform for solar fuel generation. This review outlines operating principles, device architectures, and key metrics, and highlights advances in p‐ and n‐type photoelectrodes, interfacial engineering, and catalyst integration.
Jaehyeong Kim +8 more
wiley +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
Angewandte Chemie, EarlyView.Die Kontrolle biologischer Systeme mit organischen Chromophoren hat sich zu einer vielversprechenden Strategie entwickelt und findet Anwendung von der chemischen Biologie bis hin zur Medizin. Die Komplexität von In‐vivo‐Systemen lässt sich jedoch nicht mit nur einer einzigen Lichtwellenlänge adäquat abbilden.
Nadja A. Simeth
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
Acta Crystallographica Section E Structure Reports Online, 2014 In the title molecule, C13H9NO, the fluorene system and the oxime group non-H atoms are essentially coplanar, with a maximum deviation from the fluorene mean plane of 0.079 (2) Å for the oxime O atom. A short intramolecular C—H...O generates anS(6) ring.
Bernhard Bugenhagen +3 more
openaire +3 more sources
Berichte der deutschen chemischen Gesellschaft, 1908 n ...
Schmidt, Julius, Stützel, Hermann
openaire +2 more sources