Results 51 to 60 of about 65,001 (335)

Simple and convenient two step synthesis of 5-bromo-2,3-dimethoxy-6-methyl-1,4-benzoquinone

open access: yesGreen Processing and Synthesis, 2019
5-bromo-2,3-dimethoxy-6-methyl-1,4-benzoquinone 3, a key intermediate for preparing coenzyme Q compounds, was readily synthesized in two steps by a reaction sequence starting from the commercially available 3,4,5-trimethoxytoluene 1 via bromination and ...
Qiu Yong-Fu   +4 more
doaj   +1 more source

Manganese/bipyridine-catalyzed non-directed C(sp3)–H bromination using NBS and TMSN3

open access: yesBeilstein Journal of Organic Chemistry, 2021
A Mn(II)/bipyridine-catalyzed bromination reaction of unactivated aliphatic C(sp3)−H bonds has been developed using N-bromosuccinimide (NBS) as the brominating reagent. The reaction proceeded in moderate-to-good yield, even on a gram scale.
Kumar Sneh   +2 more
doaj   +1 more source

Chemically Doped Conductive Polymers for Wearable Health Monitoring

open access: yesAdvanced Materials Technologies, EarlyView.
Among conductive polymers, poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), polyaniline (PANI), and polypyrrole (PPy) are the most studied and applied. Chemical doping significantly boosts intrinsic conductivity and mechanical robustness.
Mengdi Zuo   +5 more
wiley   +1 more source

Highly Anisotropic Quasi‐Direct Organic Metal Halide Hybrids: A Platform for Polarization‐Sensitive Optoelectronics

open access: yesAdvanced Materials Technologies, EarlyView.
One‐dimensional C4N2H14PbBr4 is shown to have a quasi‐direct electronic band structure and strongly anisotropic transport with polarized broadband emission. A GW/Bethe–Salpeter excited‐state force formalism, supported by polarized Raman and temperature‐dependent photoluminescence, identifies low–frequency Pb–Br phonons that drive ultrafast exciton self‐
Rijan Karkee   +7 more
wiley   +1 more source

Electrochemical bromination of peracetylated glycals

open access: yes, 2008
Bromination of glycals with tribromides formed in situ from bromine and different bromide salts in dichloromethane (DCM) or acetonitrile (AN) was found to give predominantly the products of anti addition of bromine from the C-6 side in high yields.
Neso Sojic   +13 more
core   +1 more source

Postsynthetic bromination of UiO-66 analogues: altering linker flexibility and mechanical compliance.

open access: yesDalton Transactions, 2016
A new member of the UiO-66 series of zirconium metal-organic frameworks (MOFs) is reported, and the postsynthetic bromination of its integral alkene moeities in a single-crystal to single-crystal manner is fully characterised.
Ross J. Marshall   +7 more
semanticscholar   +1 more source

Linking Device Performance to Nanoscale Photoactivation of Grain Boundaries in 2D Hybrid Halide Perovskites

open access: yesAdvanced Materials Technologies, EarlyView.
The opto‐electronic response of polycrystalline (PEA)2PbBr4 thin films is investigated by correlating macroscopic photodetector performance with nanoscale mapping techniques. Grain boundary density is systematically tuned through crystallization control and linked to device responsivity.
Camilla Bordoni   +10 more
wiley   +1 more source

Bromination of graphene and graphite [PDF]

open access: yes, 2011
International audienceWe present a density functional theory study of low density bromination of graphene and graphite, finding significantly different behaviour in these two materials.
Lefrant, S.   +19 more
core   +1 more source

Bromination of Chalcone

open access: yesARO-The Scientific Journal of Koya University
In this research work, a new compound, namely 2,6-dibromo-2,6-bis(bromo(phenyl)methyl)cyclohexanone (1), is synthesized and characterized for possible applications in organic electronic devices.
Kosrat N. Kaka   +3 more
doaj   +1 more source

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