Results 31 to 40 of about 2,249 (138)

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

Solvatochromism Study on the Copper(II) Complexes Containing 3–Substituted Derivatives of Acetylacetonate Ligands [PDF]

Iranica Journal of Energy and Environment, 2012
Solvatochromic properties of a series of bis(3–substituted derivatives of acetylacetone) copper(II) (X-acacH , X = Cl, H. CH3) complexes were studied. All the complexes demonstrated negative solvatochromism.
Hamid Golchoubian, Fariba Khoshsiar
doaj  

Anti-quenching NIR-II molecular fluorophores for in vivo high-contrast imaging and pH sensing

Nature Communications, 2019
Fluorophores operating in the second near-infrared window suffer from solvatochromism-caused fluorescence quenching in biological aqueous solution. Here, the authors synthesized a series of pH-responsive pentamethine cyanine fluorophores that afford ...
Shangfeng Wang, Yong Fan, Dandan Li, Caixia Sun, Zuhai Lei, Lingfei Lu, Ting Wang, Fan Zhang   +7 more
doaj   +1 more source

Redshifting TADF Emission With a Bora‐Triptycene Lewis Acid

Angewandte Chemie, EarlyView.
Bathochromic emission shifting of donor–acceptor and multi‐resonant TADF emitters is achieved by adduct formation with a thia‐bora‐triptycene Lewis acid. TADF properties are retained on adduct formation whilst delivering > 100 nm redshift of the emission.
Mathew J. Cross, Emily L. Hanover, Arnaud Osi, Eli Zysman‐Colman, Michael J. Ingleson   +4 more
wiley   +2 more sources

New electroactive asymmetrical chalcones and therefrom derived 2-amino- / 2-(1H-pyrrol-1-yl)pyrimidines, containing an N-[ω-(4-methoxyphenoxy)alkyl]carbazole fragment: synthesis, optical and electrochemical properties

Beilstein Journal of Organic Chemistry, 2017
In this paper we present a synthetic approach to six new D–π–A–D conjugated chromophores containing the N-[ω-(4-methoxyphenoxy)alkyl]carbazole fragment. Such readily functionalizable heterocycle as carbazole was used as a main starting compound for their
Daria G. Selivanova, Alexei A. Gorbunov, Olga A. Mayorova, Alexander N. Vasyanin, Igor V. Lunegov, Elena V. Shklyaeva, Georgii G. Abashev   +6 more
doaj   +1 more source

Hydration‐Gated Photoinduced Electron Transfer in BODIPY Dyes

Angewandte Chemie, EarlyView.
Hydration switches photoinduced electron transfer (PET) ON in alkoxy‐coordinated BODIPY dyes via specific hydrogen bonding. This gating yields a fluorescence lifetime span of ∼6 ns, enabling fluorescence lifetime imaging microscopy (FLIM) contrast in live cells and organoids. ABSTRACT Fluorescent probes based on photoinduced electron transfer (PET) are
Venkata N. K. Mamillapalli, Irina A. Okkelman, Fatima Akhssas, Greta Sambucari, Angela C. Debruyne, Dinesh Beniwal, Christophe Bucher, Mariangela Di Donato, Ruslan I. Dmitriev, Mikhail A. Filatov   +9 more
wiley   +2 more sources

Precision Matters: Minor Concentration Deviations of DMSO May Cause Major Efficacy Shifts

Angewandte Chemie, EarlyView.
Low‐concentration dimethyl sulfoxide (DMSO) has long been regarded as biologically safe in drug discovery. However, increasing DMSO from 0.1% to 0.9% reduces photosensitizer PNA‐9 particle size from 657 nm to 260 nm, enhancing endocytosis and photodynamic therapy outcomes.
Sisi Yuan, Shang Zhu, Hang Song, Fei Wang, Zikai He, Sijie Chen, Engui Zhao   +6 more
wiley   +2 more sources

Experimental and theoretical study on solvent and substituent effects on the intramolecular charge transfer in 3-[(4-substituted)phenylamino]isobenzofuran-1(3H)-ones [PDF]

Journal of the Serbian Chemical Society, 2018
The substituent and solvent effects on solvatochromism in 3-[(4-substituted) phenylamino]isobenzofuran-1(3H)-ones were studied using experimental and theoretical methodologies.
Prlainović Nevena Ž., Rančić Milica P., Stojiljković Ivana, Nikolić Jasmina B., Drmanić Saša Ž., Ajaj Ismail, Marinković Aleksandar D.   +6 more
doaj   +1 more source

A Fluorescent Thermometer Based on a Pyrene-Labeled Thermoresponsive Polymer

Sensors, 2010
Thermoresponsive polymers that undergo a solubility transition by variation of the temperature are important materials for the development of ‘smart’ materials.
Ulrich S. Schubert, Richard Hoogenboom, Christian Pietsch, Antje Vollrath   +3 more
doaj   +1 more source

The Global Polarity of Alcoholic Solvents and Water – Importance of the Collectively Acting Factors Density, Refractive Index and Hydrogen Bonding Forces

ChemistryOpen, 2022
The DHBD quantity represents the hydroxyl group density of alcoholic solvents or water. DHBD is purely physically defined by the product of molar concentration of the solvent (N) and the factor Σn=n×f which reflects the number n and position (f‐factor ...
Prof. Dr. Stefan Spange, Dr. Nadine Weiß, Dr. Thomas G. Mayerhöfer   +2 more
doaj   +1 more source