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Theoretical Investigation on the "ON-OFF" Mechanism of a Fluorescent Probe for Thiophenols: Photoinduced Electron Transfer and Intramolecular Charge Transfer.
Publication Type: Academic Journal
Source(s): Molecules. Oct2023, Vol. 28 Issue 19, p6921. 13p.
Abstract: In this study, the sensing mechanism of (2E,4E)-5-(4-(dimethylamino)phenyl)-1-(2-(2,4dinitrophenoxy)phenyl)penta-2,4-dien-1-one (DAPH-DNP) towards thiophenols was investigated by density functional theory (DFT) and time-dependent DFT (TD-DFT). The DNP ...
Uncovering the substituted-position effect on excited-state evolution of benzophenone-phenothiazine dyads.
Publication Type: Academic Journal
Source(s): Journal of Chemical Physics. 10/14/2023, Vol. 159 Issue 14, p1-12. 12p.
Abstract: Photofunctional materials based on donor-acceptor molecules have drawn intense attention due to their unique optical properties. Importantly, Systematic investigation of substitution effects on excited-state charge transfer dynamics of donor-acceptor m...
Paying Comprehensive Attention to the Temperature-Dependent Dual-Channel Excited-State Intramolecular Proton Transfer Mechanism of Fluorescence Ratio Probe BZ-DAM.
Publication Type: Academic Journal
Source(s): International Journal of Molecular Sciences. Sep2023, Vol. 24 Issue 18, p13899. 17p.
Abstract: The mechanism of fluorescence detection of diethyl chlorophosphate (DCP) based on 2-substituted benzothiazole (BZ-DAM) was studied by a theoretical calculation method. It should not be ignored that both the BZ-DAM and the detection product BZ-CHO have ...
Charge transfer transitions of the O2+–Ar and O2+–N2 complexes.
Publication Type: Academic Journal
Source(s): Journal of Chemical Physics. 7/14/2023, Vol. 159 Issue 2, p1-10. 10p.
Abstract: Electronic transitions are observed for the O 2 + –Ar and O 2 + –N2 complexes over the 225–350 nm range. The transitions are not associated with recognized electronic band systems of the respective atomic and diatomic constituents (Ar+, Ar, O 2 + , O2,...
Two Polarity-Sensitive Fluorescent Probes Based on Curcumin Analogs for Visualizing Polarity Changes in Lipid Droplets.
Publication Type: Academic Journal
Source(s): Molecules. Sep2023, Vol. 28 Issue 18, p6626. 13p.
Abstract: As a class of highly dynamic organelles, lipid droplets (LDs) are involved in numerous physiological functions, and the changes in polarity of LDs are closely related to a variety of diseases. In this work, we developed two polarity-sensitive fluoresce...
Indocyanine Green (ICG) Fluorescence Is Dependent on Monomer with Planar and Twisted Structures and Inhibited by H-Aggregation.
Publication Type: Academic Journal
Source(s): International Journal of Molecular Sciences. Sep2023, Vol. 24 Issue 17, p13030. 14p.
Abstract: The optical properties of indocyanine green (ICG) as a near-infrared (NIR) fluorescence dye depend on the nature of the solvent medium and the dye concentration. In the ICG absorption spectra of water, at high concentrations, there were absorption maxi...
Toward quantum sensing of chiral induced spin selectivity: Probing donor–bridge–acceptor molecules with NV centers in diamond.
Publication Type: Academic Journal
Source(s): Journal of Chemical Physics. 4/28/2023, Vol. 158 Issue 16, p1-12. 12p.
Abstract: Photoexcitable donor–bridge–acceptor (D–B–A) molecules that support intramolecular charge transfer are ideal platforms to probe the influence of chiral induced spin selectivity (CISS) in electron transfer and resulting radical pairs. In particular, the...
Tunable Fluorescence via Self-Assembled Switching of AIE-Active Micelle-like Nanoaggregates.
Publication Type: Academic Journal
Source(s): International Journal of Molecular Sciences. Jun2023, Vol. 24 Issue 12, p9941. 14p.
Abstract: Chemical structures bearing a combination of aggregation-induced emission enhancement (AIEE) and intramolecular charge transfer (ICT) properties attracted the attention of many researchers. Recently, there is an increasing demand to pose tunable AIEE a...
A Novel Aggregation-Induced Emission Fluorescent Probe for Detection of β-Amyloid Based on Pyridinyltriphenylamine and Quinoline–Malononitrile.
Publication Type: Academic Journal
Source(s): Biosensors (2079-6374). Jun2023, Vol. 13 Issue 6, p610. 10p.
Abstract: β-amyloid is an important pathological feature of Alzheimer's disease. Its abnormal production and aggregation in the patient's brain is an important basis for the early diagnosis and confirmation of Alzheimer's disease. In this study, a novel aggregat...
Synthesis and Characterization of Tetraphenylethene AIEgen-Based Push–Pull Chromophores for Photothermal Applications: Could the Cycloaddition–Retroelectrocyclization Click Reaction Make Any Molecule Photothermally Active?
Publication Type: Academic Journal
Source(s): International Journal of Molecular Sciences. May2023, Vol. 24 Issue 10, p8715. 22p.
Abstract: Three new tetraphenylethene (TPE) push–pull chromophores exhibiting strong intramolecular charge transfer (ICT) are described. They were obtained via [2 + 2] cycloaddition–retroelectrocyclization (CA-RE) click reactions on an electron-rich alkyne-tetra...