Results 81 to 90 of about 32,802 (321)

Towards bioresource-based aggregation-induced emission luminogens from lignin β-O-4 motifs as renewable resources

open access: yesNature Communications, 2023
One-pot synthesis of heterocyclic aromatics with good optical properties from phenolic β-O-4 lignin segments is of high importance to meet high value added biorefinery demands.
Tenglong Guo   +11 more
doaj   +1 more source

Synthesis and characterization of psoralen analogues based on carbazoles [PDF]

open access: yes, 2011
Novel psoralen analogues based on carbazoles were synthesized and characterized.Fundação para a Ciência e Tecnologia (FCT) and FEDER, for National NMR ...
Campos, Ana M. F. Oliveira   +2 more
core  

Divergent and Orthogonal Approach to Carbazoles and Pyridoindoles from Oxindoles via Indole Intermediates.

open access: yesOrganic Letters, 2018
The previously unexplored Grignard addition to oxindoles provides a regiospecific approach to 2- and 2,3-disubstituted indole derivatives in high yields via a one-pot aromatization driven dehydration pathway.
T. Mandal   +3 more
semanticscholar   +1 more source

Chiral Metal Halide Perovskites for Spin‐Polarized Light‐Emitting Diodes

open access: yesAdvanced Materials, EarlyView.
Chiral metal–halide perovskites offer a route to circularly polarized light without external polarizers. This Perspective compares two spin‐light emitting diode concepts: intrinsically chiral emissive layers and chiral spin‐filter interlayers that inject spin‐polarized carriers into efficient achiral emitters.
Ashish Gaurav   +8 more
wiley   +1 more source

Palladium-catalyzed synthesis of N-arylated carbazoles using anilines and cyclic diaryliodonium salts

open access: yesBeilstein Journal of Organic Chemistry, 2013
The direct synthesis of N-arylated carbazoles through a palladium-catalyzed amination of cyclic iodonium salts with anilines is described. In particular, electron-poor aniline derivatives reacted smoothly with only 5 mol % of Pd(OAc)2 as catalyst to give
Stefan Riedmüller, Boris J. Nachtsheim
doaj   +1 more source

TADF‐Emitting Dendrimers for Scalable Bar‐Coating Fabrication of Light‐Emitting Electrochemical Cells

open access: yesAdvanced Materials Technologies, EarlyView.
TADF‐emitting dendrimers promise to enable scalable solution‐based fabrication of efficient electroluminescent devices by the virtue of an attractive set of properties. Here, we report on how light‐emitting electrochemical cells, comprising the TADF‐dendrimer tBuCz2m2pTRZ, can be fabricated by scalable bar‐coating under ambient air and deliver uniform ...
Shi Tang   +5 more
wiley   +1 more source

Chloro-1,4-dimethyl-9H-carbazole Derivatives Displaying Anti-HIV Activity

open access: yesMolecules, 2018
Background: Despite the progress achieved by anti-retroviral drug research in the last decades, the discovery of novel compounds endowed with selective antiviral activity and reduced side effects is still a necessity.
Carmela Saturnino   +8 more
doaj   +1 more source

Oxidative Coupling of Carbazoles: A Substituent-Governed Regioselectivity Profile.

open access: yesJournal of Organic Chemistry, 2018
Oxidative C-C coupling of carbazoles possessing various substituents is demonstrated in the presence of organic (metal-free) recyclable oxidants, such as DDQ or CA/H+, for accessing bicarbazole regioisomers.
Sudesh Mallick   +3 more
semanticscholar   +1 more source

Dirhodium-catalyzed C-H arene amination using hydroxylamines [PDF]

open access: yes, 2016
Primary and N-alkyl arylamine motifs are key functional groups in pharmaceuticals, agrochemicals, and functional materials, as well as in bioactive natural products. However, there is a dearth of generally applicable methods for the direct replacement of
Adebesin, Adeniyi Michael   +6 more
core   +1 more source

Visible‐Light Photoprogrammable Transistors Enabled by an All‐Organic Triplet‐Sensitized Diarylethene Channel Layer

open access: yesAdvanced Optical Materials, EarlyView.
All‐organic channel‐layer OFETs are shown to enable visible‐light photoprogramming via triplet‐sensitized diarylethene switching. Preferential localization of the photoswitch and organic sensitizer in intercrystalline amorphous domains preserves polymer crystalline packing while ensuring short‐range Dexter‐type triplet–triplet energy transfer and solid‐
Jieun Kwon   +10 more
wiley   +1 more source

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