Results 61 to 70 of about 7,506 (232)

Hidden Diradical: Conformational Switch for Solvatochromic NIR Emission With Unity Quantum Yield in Thiele's Hydrocarbon

Angewandte Chemie, EarlyView.
Halogen substitution controls a conformational switch between a folded closed‐shell and a flat singlet‐diradical conformer in an air‐stable Thiele‐diradical. This conformational switch allows for near‐unity photoluminescence quantum yield with a large Stokes shift, solvatochromism, and a long‐lived excited state.
Matteo Bevilacqua, Mattia Reato, Federico Cilento, Claudia Graiff, Sabrina Antonello, Luca Schio, Alessandro Aliprandi, Cristina Tubaro, Lorenzo Franco, Martina Dell'Angela, Dominik Munz, Marco Baron   +11 more
wiley   +2 more sources

Solvatochromism in Solvent Mixtures: A Practical Solution for a Complex Problem

Liquids
Many reactions are carried out in solvent mixtures, mainly because of practical reasons. For example, E2 eliminations are favored over SN2 substitutions in aqueous organic solvents because the bases are desolvated.
Omar A. El Seoud, Shirley Possidonio, Naved I. Malek   +2 more
doaj   +1 more source

Advanced Materials for Organic Photonics [PDF]

, 2015
V oblasti nových nízkomolekulárních organických materiálů patří deriváty difenyldiketopyrrolopyrrolu (DPP), používané dříve jako barviva a pigmenty, k objektům vysokého zájmu pro jejich potencionální aplikace v moderních technologiích.
Ouzzane, Imad
core  

Conformational analysis of some pyridinium phenolates and synthetic precursors based on X-Ray and IR characterisations [PDF]

, 2014
7 pagesInternational audienceThis manuscript reports X-Ray and IR characterizations of representative pyridinium phenolates, model compounds for nonlinear optics.
Carré, Christiane, Chaumeil, Hélène, Diemer, Vincent, Jacques, Patrice, Neuburger, Markus, Tschamber, Théophile   +5 more
core   +3 more sources

Polarize the Solvent to Regulate the Intermediate Phase and Dynamic Crystallization of Perovskite Films

Advanced Materials, EarlyView.
A solvent engineering strategy using polar polymers is introduced to regulate perovskite crystallization dynamics in solar cells. Strongly polarized fluorinated groups stabilize the intermediate phase and control solvent exfoliation, leading to high‐quality films with suppressed defects.
Zhuoqiong Zhang, Yunfan Wang, Weizhen Wang, Yulan Huang, Shanchao Ouyang, Yonggui Sun, Fei Wang, Xianfang Zhou, Guichuan Xing, Shu Kong So, Guozhong Xing, Hanlin Hu, Songhua Cai, Sai‐Wing Tsang, Tom Wu   +14 more
wiley   +1 more source

Effects of dipolar interactions on linear and nonlinear optical properties of multichromophore assemblies: A case study [PDF]

, 2006
Claudine Katan ‘s present address : CNRS UMR6082 FOTON, INSA de Rennes, 20 avenue des Buttes de Coësmes, CS 70839, 35708 RENNES cedex 7, FranceInternational audienceInterchromophore interactions in flexible multidipolar structures for nonlinear optics ...
Blanchard-Desce, Mireille, Goud Bhatthula, Kumar, Katan, Claudine, Mongin, Olivier, Terenziani, Francesca   +4 more
core   +3 more sources

Donor‐Substituted C(sp3)‐Bridged Phosphorus‐Heterotriangulenes as Blue Thermally Activated Delayed Fluorescence Emitters

Advanced Optical Materials, EarlyView.
The newly developed regioselective strategy for the para‐functionalization of C(sp3)‐bridged phosphorus‐centered heterotriangulene delivers a series of donor‐acceptor emitters exhibiting thermally activated delayed fluorescence. The carbazole‐substituted compounds feature a unique combination of high photoluminescence quantum yields up to 75%, deep ...
Maximilian Schöner, Angelina Jocic, Siegfried Harrer, Mahni Fatahi, Jonas Maurmann, Andrea Reule, Frank Rominger, Eli Zysman‐Colman, Milan Kivala   +8 more
wiley   +1 more source

Spiropyran polymeric microcapillary coatings for photodetection of solvent polarity [PDF]

, 2013
Fused silica micro-capillaries were functionalised with spiropyran-polymer brushes using surface-initiated ring-opening metathesis polymerisation. Based on the inherited spiropyran properties, the functionalised capillaries were successfully used to ...
Benito-Lopez, Fernando, Diamond, Dermot, Florea, Larisa, McKeon, Aoife   +3 more
core   +1 more source

Rational Design of Optical Single‐Walled Carbon Nanotube‐Based Nanosensors with Biological Recognition Elements

Advanced Sensor Research, EarlyView.
This Review focuses on assessing and providing perspective on the field of rationally‐designed optical sensors constructed with single‐walled carbon nanotubes. The literature is reviewed and evaluated for SWCNT‐based sensors constructed with biomolecular recognition elements, including proteins, peptides, and oligonucleotides, as well as their methods ...
Amelia K. Ryan, Atara Israel, Maria Celina Stefoni, Catarina Ferraz, Ryan M. Williams   +4 more
wiley   +1 more source

ICT and AIE Characteristics Two Cyano-Functionalized Probes and Their Photophysical Properties, DFT Calculations, Cytotoxicity, and Cell Imaging Applications

Molecules, 2020
Two probes, AIE-1 and AIE-2, were synthesized to investigate the effect of substitutional functional group on aggregation (aggregation-caused quenching (ACQ) or aggregation-induced emission (AIE)) and intramolecular charge transfer (ICT) behavior as well
Arup Tarai, Meina Huang, Pintu Das, Wenhui Pan, Jianguo Zhang, Zhenyu Gu, Wei Yan, Junle Qu, Zhigang Yang   +8 more
doaj   +1 more source