Results 31 to 40 of about 2,143 (192)

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

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

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

A New Switchable Zr12 Oxocluster Based Large Pore Metal–Organic Framework Functionalized With Spin Crossover Complexes for Acetic Acid Colorimetric Sensing

Angewandte Chemie, EarlyView.
We present here (1)⊂MIP‐216(Zr), a new hybrid material composed of an FeII spin crossover complex (1) loaded in the pores of a new hydrophobic metal–organic framework (MIP‐216(Zr), that presents a high affinity toward acetic acid and acts as a highly sensitive colorimetric sensor of acetic acid vapor due to a spin state switching of the encapsulated ...
Emmelyne Cuza, Chenchen Cao, Abeer Mohtar, Mohammad Wahiduzzaman, William Shepard, Guillaume Maurin, Moises L. Pinto, Christian Serre, Antoine Tissot   +8 more
wiley   +2 more sources

Uncovering Aggregation‐Induced Emission in Carbon Dots for Color‐Changing Hydrogels and Information Encryption

Angewandte Chemie, EarlyView.
Red‐emissive carbon dots (R‐CDs) exhibiting aggregation‐induced emission (AIE) and aggregation‐caused quenching (ACQ) effects are synthesized from citric acid and urea. They display weak blue fluorescence in water but strong red emission in DMF due to aggregation.
Jiafeng Wan, Shiyi Chen, Haopu Su, Tim Muschik, Tongtong Cui, Yosuke Akae, Dominik Voll, Christian W. Schmitt, Stefan Bräse, Tao Chen, Andreas‐Neil Unterreiner, Patrick Théato   +11 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

π‐Extended COUPY Fluorophores for Targeted Near‐Infrared Fluorescence and Lifetime Imaging in Live Cells

Angewandte Chemie, EarlyView.
π‐Extended COUPY dyes, obtained by vinylogation of coumarin‐based COUPY scaffolds, shift absorption, and emission deep into the NIR region while preserving compactness and synthetic accessibility. These bright, photostable dyes enable live‐cell imaging, FLIM, and site‐specific peptide conjugation, offering a modular platform for targeted bioimaging and
Diego Abad‐Montero, Manel Bosch, Rodrigo Garcés‐Castellanos, Michael Q. Schottenhamel, Sergio Pedraza‐Arevalo, Alejandro Ibáñez‐Costa, Justo P. Castaño, Tania García‐Becerra, Elena Rebollo, Marta E. Alberto, Antonio Francés‐Monerris, Vicente Marchán   +11 more
wiley   +2 more sources

A Blue Emissive Heavy Atom‐Free Multiresonant Thermally Activated Delayed Fluorescent Emitter Shows Ultra‐Fast Reverse Intersystem Crossing

Angewandte Chemie, EarlyView.
The extended π‐system and low‐lying n‐π∗ transition endow DDOBDiKTa with a synergistic combination of strong spin‐orbit coupling, small reorganization energy and small ΔEST, enabling this blue boron‐nitrogen‐carbonyl hybrid emitter to achieve a fast kRISC of 6.34 × 106 s−1 together with OLEDs showing small efficiency roll‐off, with EQEmax/EQE10000 of ...
Wenrui Wang, Hassan Hafeez, Sen Wu, Aidan P. McKay, David B. Cordes, Ifor D. W. Samuel, Eli Zysman‐Colman   +6 more
wiley   +2 more sources

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