Results 101 to 110 of about 2,936 (261)

β‐Ketonitrile‐Modified Prodan Derivatives as Large‐Stokes‐Shift Solvatochromic Fluorophores With Enhanced Brightness and Ratiometric Thermometric Response

Chemistry – A European Journal, EarlyView.
We report a systematic study of β‐ketonitrile–modified Prodan‐type solvatochromic fluorophores. The β‐ketonitrile substitution induces marked bathochromic shifts in absorption and emission and significantly enhances fluorescence quantum yields in nonpolar solvents.
Hiroaki Asakawa, Takuya Tanaka, Kensei Konishi, Gen‐ichi Konishi   +3 more
wiley   +1 more source

Characterization and antimicrobial screening of secondary metabolite fractions from saprobic fungi

Studies in Fungi
Fungal secondary metabolites are a rich source of bioactive compounds with significant pharmaceutical and agricultural potential, particularly for their antimicrobial properties.
Ekachai Chukeatirote, Jutamart Monkai, Andriy Synytsya, Roman Bleha, Tomas Ruml   +4 more
doaj   +1 more source

Halogenated Tryptophans Improve Integrin αVβ6 Affinity of Cyclic RGD Peptides and Provide Handles for Late‐Stage Derivatization

Chemistry – A European Journal, EarlyView.
Lighting up αVβ6: Halotryptophan engineering converts an RGD scaffold into a modular αVβ6 ligand platform, enabling picomolar affinity and late‐stage functionalization. The resulting probes combine high selectivity with fluorescence for FACS and tumor imaging.
Beate Nachtigall, Caroline Brinkmann, Jana Langosch, Anke Nieß, Norbert Sewald   +4 more
wiley   +1 more source

Nano MIPs (Molecularly Imprinted Polymers) Prepared From a “Frustrated” Gold Nanoparticle‐Based Pre‐Imprinting Matrix: Enhancing Binding Affinity and Selectivity

Chemistry – A European Journal, EarlyView.
A comparative study across ligand‐stabilized gold nanoparticles and surfactant micelles reveals that molecular imprinting strongly depends on the nanoplatform used for imprinting. “Frustrated” noncovalent interactions within the monolayer on gold nanoparticle surface can be exploited to improve both the binding affinity and selectivity for ...
Mansi Sharma, Dashaunette D. Wallace, Yan Zhao   +2 more
wiley   +1 more source

Tribenzotriquinacene Fused Dimers (“Fusodimers”)—Synthesis and Host–Guest Properties

Chemistry – A European Journal, EarlyView.
Two tribenzotriquinacene units merged with each other in either syn‐ or anti‐orientation of the bowls have become accessible in a short synthesis. In contrast to the anti‐isomer, the syn‐isomer forms 1:1 host–guest complexes with both C60 and C70 in solution and in the solid state, as shown by 1H NMR spectroscopy and x‐ray diffraction.
Chun‐Fai Ng, Lisi He, Yin‐Ying Cheung, Xiao‐Ping Cao, Dietmar Kuck, Hak‐Fun Chow   +5 more
wiley   +1 more source

Proximal Steric Shielding Unlocks High Solid‐State Luminescence in Quinoxaline‐Fused Pyrene Heteroacenes

Chemistry – A European Journal, EarlyView.
Proximal steric tuning of quinoxaline‐fused pyrene heteroacenes enables soluble derivatives that exhibit solid‐state photoluminescence quantum yields (PLQYs) up to 82%, surpassing previous benchmarks. This work reveals key structure–property relationships for next‐generation, processable organic emitters in advanced optoelectronic applications ...
Rafiq Ahamed, Sonal Patil, Madhusudan Dutta, Godi Kiran Venkata Sai, Sergey Fisher, Anil Bhadke, Rama Krishna Gamidi, Susnata Pramanik, Tomáš Šolomek, Sudhakar Gaikwad   +9 more
wiley   +1 more source

Chiral Dipicolinamide‐Based Push–Pull π‐Conjugated Systems as Nonreciprocal Circularly Polarized Luminescence Emitters

Chemistry – A European Journal, EarlyView.
This work presents the synthesis and characterization of chiral dipicolinamide push–pull fluorophores. While possessing similar photophysical properties in solution, their solvent‐annealed thin films exhibit unexpected, nonreciprocal chiroptical activity in both absorption and emission, including a complete inversion of the chiroptical profile upon ...
Filippo Petri, Luca Gherardi, Lorenzo Di Bari, Lorenzo Arrico   +3 more
wiley   +1 more source

Illuminating Olympicenes: Insights Into Anti‐Kasha Photophysics in Polycyclic Aromatic Hydrocarbons

Chemistry – A European Journal, EarlyView.
Compact olympicene‐based chromophores reveal unexpectedly rich excited‐state behavior, including dual fluorescence, excitation‐dependent emission, and anti‐Kasha‐type emission. Tunable locally excited and intramolecular charge‐transfer states emerge from subtle structural changes, expanding the design rules for polycyclic aromatic chromophores and ...
Wenlong Li, Stephen Awuku, Mia E. Dionne, Jordyn L. Gunderson, Marc R. MacKinnon, Amy L. Stevens   +5 more
wiley   +1 more source

The Influence of Drosophila Spire and Myosin V During Mid‐Oogenesis Is Independent of Their Direct Interaction

Cytoskeleton, EarlyView.
ABSTRACT Cooperativity between cytoskeletal proteins is crucial for spatiotemporal coordination in biological processes, like oogenesis. In mammalian and Drosophila oogenesis, proper assembly and function of actin networks require coordination between actin assembly factors Spire and formins, as well as actin‐associated proteins like myosins and Rab ...
Joseph Y. Ong, Hannah M. Bailey, Emma Carley, Michelle Panzica, Merin Rixen, Neil Billington, Rong Liu, Margot E. Quinlan   +7 more
wiley   +1 more source

Engineering and Characterization of a Fluorescent Fission Yeast Arp2/3 Complex for Single Molecule Mechanistic Investigations

Cytoskeleton, EarlyView.
ABSTRACT Arp2/3 complex is a seven‐component protein complex that facilitates the assembly of branched actin filament networks by binding to pre‐existing “mother” actin filaments and initiating the nucleation of new branched “daughter” filaments. Arp2/3 complex must be activated by a nucleation promoting factor such as the WASP/Scar protein family. The
Caitlin A. Anderson, Meghan E. O'Connell, Kaitlin E. Homa, Cristian Suarez, Michael L. James, Kashmeera D. Baboolall, Vilmos Zsolnay, Vladimir Sirotkin, David R. Kovar   +8 more
wiley   +1 more source