Results 11 to 20 of about 7,506 (232)
AggregateAggregation‐induced emission luminogens (AIEgens) are typically large π‐conjugated molecules, but their low affinity and noninvasiveness toward analytes limit practical applications. To address this, smaller, more planar AIEgens are needed.
Takuya Tanaka +8 more
doaj +2 more sources
Solvatochromic covalent organic frameworks [PDF]
Nature Communications, 2018 AbstractCovalent organic frameworks (COFs) are an emerging class of highly tuneable crystalline, porous materials. Here we report the first COFs that change their electronic structure reversibly depending on the surrounding atmosphere. These COFs can act as solid-state supramolecular solvatochromic sensors that show a strong colour change when exposed ...
Ascherl, Laura +9 more
openaire +6 more sources
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 +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 +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
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 +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 +4 more
core +2 more sources
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 +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 +3 more
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 +47 more
core +3 more sources