Results 21 to 30 of about 7,561 (220)

Solvatochromic Study of Two Carbanion Monosubstituted 4-Tolyl-1,2,4-triazol-1-ium Phenacylids in Binary Hydroxyl Solvent Mixtures

Molecules, 2021
Two 4-tolyl-1,2,4-triazol-1-ium methylids, namely 4-tolyl-1,2,4-triazol-1-ium-phenacylid and 4-tolyl-1,2,4-triazol-1-ium-4′-nitro-phenacylid, are studied from solvatochromic point of view in binary solvent mixtures of water with ethanol and water with ...
Dana Ortansa Dorohoi, Dan-Gheorghe Dimitriu, Mihaela Maria Dulcescu-Oprea, Ana Cezarina Morosanu, Nicoleta Puica-Melniciuc, Elena Ardelean, Antonina Gritco-Todirascu, Corina Cheptea   +7 more
doaj   +1 more source

Synthesis and Optical Properties of a Series of Push-Pull Dyes Based on Pyrene as the Electron Donor

Molecules, 2023
Fifteen push-pull dyes comprising the tetracyclic polyaromatic pyrene have been designed and synthesized. The optical properties of the fifteen dyes have been examined in twenty-two solvents of different polarities.
Thanh-Tuân Bui, Sébastien Péralta, Frédéric Dumur   +2 more
doaj   +1 more source

Novel donor–π–acceptor dye: synthesis, solvatochromism and DFT calculations [PDF]

شیمی کاربردی روز, 2013
A novel D–π–A system having indole moiety 5 was synthesized in four steps, which exhibit interesting solvatochromism ranging from yellow in CHCl3 to red in DMF, violet in acetone, deep purple in DMSO and green in CH3CN.
Bagher Eftekhari-Sis
doaj   +1 more source

3-Aryl-5-aminobiphenyl Substituted [1,2,4]triazolo[4,3-c]quinazolines: Synthesis and Photophysical Properties

Molecules, 2023
Amino-[1,1′]-biphenyl-containing 3-aryl-[1,2,4]triazolo[4,3-c]quinazoline derivatives with fluorescent properties have been designed and synthesized. The type of annelation of the triazole ring to the pyrimidine one has been unambiguously confirmed by ...
Alexandra E. Kopotilova, Tatyana N. Moshkina, Emiliya V. Nosova, Galina N. Lipunova, Ekaterina S. Starnovskaya, Dmitry S. Kopchuk, Grigory A. Kim, Vasiliy S. Gaviko, Pavel A. Slepukhin, Valery N. Charushin   +9 more
doaj   +1 more source

Photophysics and Inverted Solvatochromism of 7,7,8,8-Tetracyanoquinodimethane (TCNQ) [PDF]

, 2019
We report the absorption, fluorescence, and Raman spectroscopy of 7,7,8,8- tetracyanoquinodimethane (TCNQ) in a variety of solvents. The fluorescence quantum yields (QYs) of linear alkane solutions are similar to one another, but QY is shown to acutely ...
IIMORI Toshifumi, ISHIKAWA Takumi, NAKANO Hideyuki, TAMAYA Honami, TORII Yuto   +4 more
core   +2 more sources

New Water-Soluble Poly(propylene imine) Dendrimer Modified with 4-Sulfo-1,8-naphthalimide Units: Sensing Properties and Logic Gates Mimicking

Sensors, 2023
A new water-soluble poly(propylene imine) dendrimer (PPI) modified with 4-sulfo-1,8-naphthalimid units (SNID) and its related structure monomer analog (SNIM) has been prepared by a simple synthesis.
Awad I. Said, Desislava Staneva, Ivo Grabchev   +2 more
doaj   +1 more source

Interfacial chemical oxidative synthesis of multifunctional polyfluoranthene. [PDF]

, 2015
A novel polyfluoranthene (PFA) exhibiting strong visual fluorescence emission, a highly amplified quenching effect, and widely controllable electrical conductivity is synthesized by the direct cationic oxidative polymerization of fluoranthene in a ...
Huang, Mei-Rong, Kaner, Richard B, Li, Xin-Gui, Liao, Yaozu   +3 more
core   +1 more source

Designer molecular probes for phosphonium ionic liquids [PDF]

, 2010
Investigations into the extent of structuring present in phosphonium based ionic liquids (ILs) have been carried out using photochromic molecular probes.
Armand, Baker, Breitbach, Byrne, Byrne, Byrne, Byrne, Coleman, Coleman, Crowhurst, Daibin, Dermot Diamond, di Nunzio, Fletcher, Fraser, Gorner, Hanioka, Ipe, Iwata, Iwata, Kalhor, Karmakar, Karmakar, Lopes, Lopes, Mandal, McCoy, Meng, Minkin, Pison, Radu, Ramnial, Reichardt, Robert Byrne, Rosario, Seiichi, Simon Coleman, Simon Gallagher, Singh, Stracke, Sueishi, Tsubaki, Uznanski, Uznanski, Wohl, Wu, Yuanyuan   +46 more
core   +1 more source

Novel Fluorescent Probe Based on Anthryl Dendron Having Oligo(ethyleneoxide) Groups at the Terminals [PDF]

, 2008
Amphiphilic anthryl dendrons 5 and 6, which have carboxylate groups or oligo(ethyleneoxide) groups at the terminals, show solvatochromic properties. Reaction efficiency of photodimerization and dynamic light scattering (DLS) experiment of 5 and 6 reveal ...
Takaguchi, Yutaka, Yanagimoto, Yasushi
core   +1 more source

Physicochemical study of spiropyran-terthiophene derivatives: photochemistry and thermodynamics [PDF]

, 2012
The photochemistry and thermodynamics of two terthiophene (TTh) derivatives bearing benzospiropyran (BSP) moieties, 1-(3,3’’-dimethylindoline-6’-nitrobenzospiropyranyl)-2-ethyl 4,4’’-didecyloxy-2,2’:5’,2’’-terthiophene-3’-acetate (BSP-2) and 1-(3,3 ...
Benito-Lopez, Berman, Byrne, Byrne, Byrne, Chibisov, Coleman, Crano, David L. Officer, Dermot Diamond, Dvornikov, Flannery, Gallazzi, Gambhir, Gordon G. Wallace, Gorner, Gorner, Gorner, Guglielmetti, Heller, Higuchi, Hirshberg, Hosseini, Kevin J. Fraser, Klaudia Wagner, Kumpumbu-Kalemba, Levesque, Levesque, Levesque, Michele Zanoni, Minkin, Raymond, Robert Byrne, Roncali, Roncali, Sanjeev Gambhir, Shin, Simon Coleman, Stitzel, Wagner, Wagner, Willner, Wojtyk, Yassar, Yoshida, Yoshino, Zhou, Zotti   +47 more
core   +3 more sources