Results 81 to 90 of about 3,016,957 (322)

TADF Host Engineering for Improved Pure Blue Matrix‐Free Hyperfluorescent OLEDs with Ultranarrow Emission

Advanced Optical Materials, EarlyView.
This work presents the development of efficient blue thermally activated delayed fluorescent (TADF) materials that perform well without doping, enabling simplified, matrix‐free hyperfluorescence (MFHF) OLEDs. When combined with encapsulated narrow‐band emitters, the TADF materials serve as effective hosts resulting in pure blue, ultranarrow emission ...
Hwan‐Hee Cho, Daniel G. Congrave, Sebastian Gorgon, Victor Riesgo‐Gonzalez, Richard H. Friend, Hugo Bronstein   +5 more
wiley   +1 more source

Rationalized design, synthesis and pharmacological screening of amino acid linked spiro pyrrolidino oxyindole analogs through environment friendly reaction

Journal of Advanced Pharmaceutical Technology & Research, 2013
Introduction: The development of newer synthetic approaches toward the synthesis of polynuclear heteroaromatics and their application in the synthesis of some biologically active compounds has been discussed in this study.
Sanjit Kumar Das, Sanjib Bhattacharya, Amit Kundu   +2 more
doaj   +1 more source

High‐Efficiency Blue‐Emitting Multi‐Resonance TADF Organic Light‐Emitting Diodes Constructed on Spiro Quinolinoacridine/Fluorene‐diphenylphosphine Oxide Positional Isomers

Advanced Optical Materials, EarlyView.
We report spiro‐configured hosts constructed on the assembly of a quinolinoacrdine unit and different fluorene positional isomers for high‐performance blue MR‐TADF Organic Light‐Emitting Diodess. The v‐DABNA:CN‐Ir emissive layer combination with SQA‐4‐FPOPh2 as host shows a narrowband emission peak and a high maximum external quantum efficiency of 22.9%
Kelvine Letellier, Yue‐Jian Yang, Wei Gao, Dong‐Ying Zhou, Denis Ari, Cassandre Quinton, Zuo‐Quan Jiang, Cyril Poriel   +7 more
wiley   +1 more source

SPIRO-COMPOUNDS. PART IV FORMATION OF SPIRO- COMPOUNDS FROM CYCLOPENTANONE. SYNTHESIS OF CYCLOPENTANE-SPIRO-CYCLOPENTANE AND ITS DERIVATIVES.

, 1937
SPIRO-COMPOUNDS. PART IV FORMATION OF SPIRO- COMPOUNDS FROM CYCLOPENTANONE. SYNTHESIS OF CYCLOPENTANE-SPIRO-CYCLOPENTANE AND ITS DERIVATIVES.
openaire   +2 more sources

Spiro Compounds

Spiro Compounds, 2022
Marta Meazza
semanticscholar   +1 more source

Spiro[pyrrolidine-3, 3´-oxindole] as potent anti-breast cancer compounds: Their design, synthesis, biological evaluation and cellular target identification

Scientific Reports, 2016
The spiro[pyrrolidine-3, 3´-oxindole] moiety is present as a core in number of alkaloids with substantial biological activities. Here in we report design and synthesis of a library of compounds bearing spiro[pyrrolidine-3, 3´-oxindole] motifs that ...
Santanu Hati, Sayantan Tripathy, P. K. Dutta, R. Agarwal, R. Srinivasan, Ashutosh Kumar Singh, Shailja Singh, Subhabrata Sen   +7 more
semanticscholar   +1 more source

Advances in GaN‐on‐Glass for Optoelectronic Devices: Progress in Epitaxial Growth, Device Integration, and Applications

Advanced Photonics Research, EarlyView.
This review presents recent advances in GaN‐on‐glass technology, with a focus on epitaxial growth strategies, preorienting layers, and device integration. Innovations in material processing have been shown to enhance structural quality, orientation control, and scalability, highlighting their significance in light‐emitting diodes, photodetectors, and ...
Jungwook Min, Kwangwook Park
wiley   +1 more source

Antibacterial Properties of 3 H-Spiro[1-benzofuran-2,1’-cyclohexane] Derivatives from Heliotropium filifolium

Molecules, 2008
A re-examination of cuticular components of Heliotropium filifolium allowed the isolation of four new compounds: 3’-hydroxy-2’,2’,6’-trimethyl-3H-spiro[1-benzo-furan-2,1’-cyclohexane]-5-carboxylic acid(2), methyl 3†...
Marcela Wilkens, Marcos C. Rezende, Javier Echeverría, Alejandro Urzúa   +3 more
doaj  

Recent Advances in Robotic Systems for Robot‐Assisted Transoral Surgical Procedures: A Systematic Review

Advanced Robotics Research, EarlyView.
This review systematically examines robotic systems for robot‐assisted transoral surgical procedures, classifying them based on transoral access depth, and evaluates their fundamental design principles, mechanical innovations, algorithmic advancements, and clinical implementation status.
Yuhao Shi, Jichen Li, Yuekun Yang, Zheng Li, Toshio Fukuda, Chaoyang Shi   +5 more
wiley   +1 more source

Substituent Effects on the Stability and Antioxidant Activity of Spirodiazaselenuranes

Molecules, 2015
Spirodiazaselenuranes are structurally interesting compounds and the stability of these compounds depends highly on the nature of the substituents attached to the nitrogen atoms.
Devappa S. Lamani, Debasish Bhowmick, Govindasamy Mugesh   +2 more
doaj   +1 more source