Results 21 to 30 of about 4,799 (244)

Carbazole Substituted BODIPYs [PDF]

Frontiers in Chemistry, 2019
Difluoroboron-dipyrromethenes (BODIPYs) are highly popular fluorescent dyes with applications as NIR probes for bioimaging, fluorescent tags/sensors and as photosensitizers in cancer therapy and organic photovoltaics. This review concentrates on the synthesis and spectral properties of BODIPY dyes conjugated with carbazole heterocycle. The carbazole is
Iti Gupta, Praseetha E. Kesavan
openaire   +3 more sources

Nitration of 5,11-dihydroindolo[3,2-b]carbazoles and synthetic applications of their nitro-substituted derivatives

Beilstein Journal of Organic Chemistry, 2017
A new general approach to double nitration of 6,12-di(hetero)aryl-substituted and 6,12-unsubstituted 5,11-dialkyl-5,11-dihydroindolo[3,2-b]carbazoles by acetyl nitrate has been developed to obtain their 2,8-dinitro and 6,12-dinitro derivatives ...
Roman A. Irgashev, Nikita A. Kazin, Gennady L. Rusinov, Valery N. Charushin   +3 more
doaj   +1 more source

Cytotoxic Constituents from the Stems of Clausena lansium (Lour.) Skeels

Molecules, 2013
Six compounds were isolated from the stems of Clausena lansium (Lour.) Skeels by repeated sillica gel column chromatography. Their chemical structures were elucidated on the basic of physicochemical and spectroscopic data.
Shu Shan Du, Zhi Wei Deng, Jing Xu, Zhu Feng Geng, Jiang Bin Feng, Kai Yang, Li Fan, Cheng Fang Wang, Hai Yan Jiang, Hai Bo Yin   +9 more
doaj   +1 more source

Molecular Orientations of Delayed Fluorescent Emitters in a Series of Carbazole-Based Host Materials

Frontiers in Chemistry, 2020
Molecular orientation is one of the most crucial factors to boost the efficiency of organic light-emitting devices. However, active control of molecular orientation of the emitter molecule by the host molecule is rarely realized so far, and the ...
Hisahiro Sasabe, Hisahiro Sasabe, Hisahiro Sasabe, Yuki Chikayasu, Satoru Ohisa, Satoru Ohisa, Satoru Ohisa, Hiroki Arai, Tatsuya Ohsawa, Ryutaro Komatsu, Yuichiro Watanabe, Daisuke Yokoyama, Daisuke Yokoyama, Daisuke Yokoyama, Junji Kido, Junji Kido, Junji Kido   +16 more
doaj   +1 more source

Vinylation of a Secondary Amine Core with Calcium Carbide for Efficient Post-Modification and Access to Polymeric Materials

Molecules, 2018
We developed a simple and efficient strategy to access N-vinyl secondary amines of various naturally occurring materials using readily available solid acetylene reagents (calcium carbide, KF, and KOH).
Konstantin S. Rodygin, Alexander S. Bogachenkov, Valentine P. Ananikov   +2 more
doaj   +1 more source

Organic persistent room temperature phosphorescence enabled by carbazole impurity

Frontiers in Chemistry, 2023
The molecular design of metal-free organic phosphors is essential for realizing persistent room-temperature phosphorescence (pRTP) despite its spin-forbidden nature.
Alexander C. Brannan, Nguyen Le Phuoc, Mikko Linnolahti, Alexander S. Romanov   +3 more
doaj   +1 more source

Green sample preparation protocol for extraction of carbazoles from petroleum source rock

Heliyon
A new green method for extraction of carbazoles from petroleum source rocks was developed using surfactant solution. A three-level full factorial design of experiment (DoE) which involved extraction temperature, extraction time and concentration of ...
Akinsehinwa Akinlua, Kai Mangelsdorf
doaj   +1 more source

Synthesis of 2,3-Disubstituted Carbazoles, Benzo[c]carbazoles, and Phenanthrenes Through FeCl3-Mediated Cyclization of Triene Frameworks

SynOpen, 2018
A facile synthesis of 2,3-disubstituted carbazoles through electrocyclization of 2,3-divinylindoles using FeCl3 in DMF at reflux is reported. The methodology was found to be applicable for smooth transformation of 3-aryl-2-vinylindole as well as 2 ...
Potharaju Raju, Thiyagarajan Mageshwaran, Bose Muthu Ramalingam, Arasambattu K. Mohanakrishnan   +3 more
doaj   +1 more source

Synthetic routes for N-arylation of carbazole derivatives and their applications as organic materials

Journal of Saudi Chemical Society
Carbazole is a heterocyclic aromatic organic compound that has vast applications in pharmaceuticals, and in biological and material sciences. Carbazole derivatives show various biological activities such as antibiotic, anti-inflammatory, anti-tumor and ...
Sobia Mukhtar, Ayesha Rafiq, Syed Ali Raza Naqvi, Sana Aslam, Matloob Ahmad, Sami A. Al-Hussain, Magdi E.A. Zaki   +6 more
doaj   +1 more source

Role of the Recombination Zone in Organic Light‐Emitting Devices

Advanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source