Results 101 to 110 of about 36,459 (348)

Recent Advances in Wide‐Bandgap Perovskite Solar Cells

Advanced Materials, EarlyView.
Ubiquitous defects predominately account for photo‐instability and open‐circuit voltage losses in wide‐bandgap perovskite solar cells (WBG PSCs). This review comprehensively presents the underlying impact mechanisms, summarizes the advanced optimization strategies across various functional layers and their interfaces to develop efficient and stable WBG
Jianjun Mei, Feng Yan
wiley   +1 more source

Doped and non-doped organic light-emitting diodes based on a yellow carbazole emitter into a blue-emitting matrix [PDF]

arXiv, 2007
A new carbazole derivative with a 3,3'-bicarbazyl core 6,6'-substituted by dicyanovinylene groups (6,6'-bis(1-(2,2'-dicyano)vinyl)-N,N'-dioctyl-3,3'-bicarbazyl; named (OcCz2CN)2, was synthesized by carbonyl-methylene Knovenagel condensation, characterized and used as a component of multilayer organic light-emitting diodes (OLEDs).
arxiv  

Advancing Self‐Assembled Molecules Toward Interface‐Optimized Perovskite Solar Cells: from One to Two

Advanced Materials, EarlyView.
In the past few years, self‐assembled molecules (SAMs) have ushered in a new era of interface engineering for perovskite solar cells. Herein, the recent progresses of co‐SAM, namely two SAMs with synergy, are comprehensively summarized and analyzed, focusing on topics including deposition methods and design principles, while further challenges about ...
Tanghao Liu, Chuanyao Luo, Ruiqin He, Zhuoqiong Zhang, Xiaohui Lin, Yimu Chen, Tom Wu   +6 more
wiley   +1 more source

The Impact of Donor‐Orientation on the Emission Properties of Chlorinated Trityl Radicals

Advanced Optical Materials, EarlyView.
Chlorinated trityl radicals with electron‐donating groups enable efficient red emission for optoelectronics. Donor orientation and steric constraints regulate vibronic coupling, influencing luminescence. A novel trityl derivative with restricted donor alignment minimizes non‐radiative decay, enhancing quantum yield.
Mona E. Arnold, Robert Toews, Lars Schneider, Jonas Schmid, Miftahussurur Hamidi Putra, Michael Busch, Axel Groß, Felix Deschler, Andreas Köhn, Alexander J. C. Kuehne   +9 more
wiley   +1 more source

Carbazole scaffolds in cancer therapy: a review from 2012 to 2018

Journal of Enzyme Inhibition and Medicinal Chemistry, 2019
For over half a century, the carbazole skeleton has been the key structural motif of many biologically active compounds including natural and synthetic products.
Samar Issa, Anthony Prandina, Nicolas Bedel, Pål Rongved, Saïd Yous, Marc Le Borgne, Zouhair Bouaziz   +6 more
doaj   +1 more source

Effects of Substituents in Polyvinylcarbazole Structures on Their Optical Properties [PDF]

Zhurnal Prikladnoi Spektroskopii (translation published in Journal of Applied Spectroscopy 2016, Volume 82, Issue 6, pp 910-914), 2016
Absorption, photoluminescence, and photoluminescence excitation spectra of solutions and thin films of N-vinylcarbazole polymers and copolymers with various substituents directly on the carbazole moiety and on the polymer chain were studied comprehensively.
arxiv  

Carbazole oligomers revisited: new additions at the carbazole 1- and 8-positions

RSC Advances, 2012
In recent years low molecular weight carbazole-based materials have attracted much interest as hole-transporting and host materials for organic light emitting diode (OLED) applications. Herein we report the tri- and tetra-bromination of carbazole and the subsequent synthesis of novel carbazole oligomers substituted at the 1- and 8-positions.
Gong, Wen Liang, Zhong, Fang, Aldred, Matthew P., Fu, Qiang, Chen, Tao, Huang, De Kang, Shen, Yan, Qiao, Xian Feng, Ma, Dongge, Zhu, Ming Qiang   +9 more
openaire   +4 more sources

Simultaneous Emission Spectral Narrowing and Spin‐Flip Acceleration in Multi‐Resonance Organoboron Emitters via Sequential Indolo‐Fusion π‐Extension

Advanced Optical Materials, EarlyView.
Sequential indolo‐fusion π‐extension as a rational design strategy to further narrow the emission bandwidth of multi‐resonance thermally activated delayed fluorescence is introduced. By fusing one or two additional indole moieties to the periphery of Cz‐B, gradual spectra narrowing and accelerated triplet–singlet exciton spin conversion are ...
Hyukgi Min, Takuma Yasuda
wiley   +1 more source

Neuroprotective efficacy of P7C3 compounds in primate hippocampus. [PDF]

, 2018
There is a critical need for translating basic science discoveries into new therapeutics for patients suffering from difficult to treat neuropsychiatric and neurodegenerative conditions.
Bauman, Melissa D, Carlson, Erin L, Cintrón-Pérez, Coral J, Pieper, Andrew A, Schumann, Cynthia M, Shin, Min-Kyoo, Taylor, Sandra L, Vázquez-Rosa, Edwin, Williams, Noelle S   +8 more
core   +2 more sources

Pd(II)-Catalyzed C-H Acylation of (Hetero)arenes. Recent Advances [PDF]

, 2020
Di(hetero)aryl ketones are important motifs present in natural products, pharmaceuticals or agrochemicals. In recent years, Pd(II)-catalyzed acylation of (hetero)arenes in the presence of an oxidant has emerged as a catalytic alternative to classical ...
Lete Expósito, María Esther, Santiago Álvarez, Carlos, Sotomayor Anduiza, María Nuria   +2 more
core   +1 more source