Przeglądaj Artykuły IChO PAN według autora "Gryko, Daniel T."

Wyświetlanie pozycji 1-17 z 17

    • All-Polymer Microcavities for the Fluorescence Radiative Rate Modification of a Diketopyrrolopyrrole Derivative 

      Megahd, Heba; Lova, Paola; Sardar, Samim; D'Andrea, Cosimo; Lanfranchi, Andrea; Koszarna, Beata; Patrini, Maddalena; Gryko, Daniel T.; Comoretto, Davide (American Chemical Society, 2022)
      Controlling the radiative rate of emitters with macromolecular photonic structures promises flexible devices with enhanced performances that are easy to scale up. For instance, radiative rate enhancement empowers low-threshold ...

    • Biomimetic Fe–Cu Prophyrrole Aerogel Electrocatalyst for Oxygen Reduction Reaction 

      Persky, Yeela; Kielesiński, Łukasz; Reddy, Samala Nagaprasad; Zion, Noam; Friedman, Ariel; Honig, Hilah C.; Koszarna, Beata; Zachman, Michael J.; Grinberg, Ilya; Gryko, Daniel T.; Elbaz, Lior (American Chemical Society, 2023)
      The development of bioinspired catalysts for oxygen reduction reaction is one of the most prominent pathways in the search for active materials to replace Pt-based catalysts in fuel cells. Herein, we report innovative ...

    • Conformation of the Ester Group Governs the Photophysics of Highly Polarized Benzo[g]coumarins 

      Szychta, Kamil; Koszarna, Beata; Banasiewicz, Marzena; Sobolewski, Andrzej; O’Mari, Omar; Clark, John A.; Vullev, Valentine I.; Barboza, Cristina A.; Gryko, Daniel T. (American Chemical Society, 2023)
      Photosensitizers that display “unusual” emission from upper electronically excited states offer possibilities for initiating higher-energy processes than what the governing Kasha’s rule postulates. Achieving conditions for ...

    • Conversion of Ketones into Blue-Emitting Electron-Deficient Benzofurans 

      Górski, Krzysztof; Ostojić, Tea; Banasiewicz, Marzena; Ouellette, Erik T.; Grisanti, Luca; Gryko, Daniel T. (Wiley, 2023)
      A novel heavy metal-free and safe synthetic methodology enabling one-step conversion of ketones into corresponding 4,5,6,7-tetrafluorobenzofurans (F4BFs) has been developed. The presented approach has numerous advantageous ...

    • Dipyrrolonaphthyridinedione – (still) a mysterious cross-conjugated chromophore 

      Sadowski, Bartłomiej; Gryko, Daniel T. (Royal Society of Chemistry, 2023)
      Dipyrrolonaphthyridinediones (DPNDs) entered the chemical world in 2016. This cross-conjugated donor–acceptor skeleton can be prepared in two steps from commercially available reagents in overall yieldz15–20% (5 mmol scale). ...

    • Excited-state symmetry breaking in quadrupolar pull–push–pull molecules: dicyanovinyl vs. cyanophenyl acceptors 

      Verma, Pragya; Tasior, Mariusz; Roy, Palas; Meech, Stephen R.; Gryko, Daniel T.; Vauthey, Eric (Royal Society of Chemistry, 2023)
      A significant number of quadrupolar dyes behave as their dipolar analogues when photoexcited in polar environments. This is due to the occurrence of excited-state symmetry breaking (ES-SB), upon which the electronic ...

    • From 2,5-Diformyl-1,4-dihydropyrrolo[3,2-b]pyrroles to Quadrupolar, Centrosymmetric Two-Photon-Absorbing A–D–A Dyes 

      Kowalczyk, Paweł; Tasior, Mariusz; Ozaki, Shuhei; Kamada, Kenji; Gryko, Daniel T. (American Chemical Society, 2022-03-28)
      An original approach has been developed for the insertion of formyl substituents at positions 2 and 5 of 1,4-dihydropyrrolo[3,2-b]pyrroles by conversion of thiazol-2-yl sub stituents. The synthetic utility of these formyl ...

    • Green-Emitting 4,5-Diaminonaphthalimides in Activity-Based Probes for the Detection of Thrombin 

      Krzeszewski, Maciej; Modrzycka, Sylwia; Bousquet, Manon H. E.; Jacquemin, Denis; Drąg, Marcin; Gryko, Daniel T. (American Chemical Society, 2022)
      The natures of electron-donating groups as well as the bridge between them determine the fate of substituted 1,8-naphthalimide molecules in the excited state. An activity-based probe constructed from a selective peptide ...

    • The magic of biaryl linkers: the electronic coupling through them defines the propensity for excited-state symmetry breaking in quadrupolar acceptor–donor–acceptor fluorophores 

      Clark, John A.; Kusy, Damian; Vakuliuk, Olena; Krzeszewski, Maciej; Kochanowski, Krzysztof J.; Koszarna, Beata; O'Mari, Omar; Jacquemin, Denis; Gryko, Daniel T.; Vullev, Valentine I. (Royal Society of Chemistry, 2023)
      Charge transfer (CT) is key for molecular photonics, governing the optical properties of chromophores comprising electron-rich and electron-deficient components. In hotoexcited dyes with an acceptor–donor–acceptor or ...

    • Multifunctional Heteropentalenes: From Synthesis to Optoelectronic Applications 

      Stecko, Sebastian; Gryko, Daniel T. (American Chemical Society, 2022)
      In the broad family of heteropentalenes, the combination of two five-membered heterocyclic rings fused in the [3,2-b] mode has attracted the most significant attention. The relatively straightforward access to these ...

    • Novel Method for the Synthesis of Merocyanines: New Photophysical Possibilities for a Known Class of Fluorophores 

      Bardi, Brunella; Vygranenko, Katerina V.; Koszarna, Beata; Vakuliuk, Olena; Dobrzycki, Łukasz; Gryko, Daniel T.; Terenziani, Francesca; Painelli, Anna (Wiley, 2023)
      A new, transformative method for the preparation of rhodols and other merocyanines from readily available tetrafluorohydroxybenzaldehyde and aminophenols has been developed. It is now possible to prepare merocyanines bearing ...

    • On-off-on Control of Molecular Inversion Symmetry via Multi-stage Protonation: Elucidating Vibronic Laporte Rule 

      Stark, Charles W.; Rammo, Matt; Trummal, Aleksander; Uudsemaa, Merle; Pahapill, Juri; Sildoja, Meelis-Mait; Tshepelevitsh, Sofja; Leito, Ivo; Young, David C.; Szymański, Bartosz; Vakuliuk, Olena; Gryko, Daniel T.; Rebane, Aleksander (Wiley, 2022)
      The Laporte rule dictates that one- and two-photon absorption spectra of inversion-symmetric molecules should display alternatively forbidden electronic transitions; however, for organic fluorophores, drawing clear distinction ...

    • Polarized, V-Shaped, and Conjoined Biscoumarins: From Lack of Dipole Moment Alignment to High Brightness 

      Kielesiński, Łukasz; Deperasińska, Irena; Morawski, Olaf; Vygranenko, Kateryna V.; Ouellette, Erik T.; Gryko, Daniel T. (American Chemical Society, 2022)
      Eleven conjoined coumarins possessing a chromeno[3,4-c]chromene-6,7-dione skeleton have been synthesized via the reaction of electron-rich phenols with esters of coumarin-3-carboxylic acids, catalyzed by either Lewis acids ...

    • Quadrupolar, Highly Polarized Dyes: Emission Dependence on Viscosity and Selective Mitochondria Staining 

      Tasior, Mariusz; Vakuliuk, Olena; Wrzosek, Antoni; Vullev, Valentine I.; Szewczyk, Adam; Jacquemin, Denis; Gryko, Daniel T. (American Chemical Society, 2024)
      Quadrupolar A-D-A-type 1,4-dihydropyrrolo[3,2-b]pyrroles (DHPPs) bearing pyridinium and quinolinium substituents emit in the 500–600 nm region. The enhancement of electronic communication between the electron-rich heterocyclic ...

    • Realization of nitroaromatic chromophores with intense two-photon brightness 

      Sadowski, Bartłomiej; Kaliszewska, Marzena; Clermont, Guillaume; Poronik, Yevgen M.; Blanchard-Desce, Mireille; Piątkowski, Piotr; Gryko, Daniel T. (Royal Society of Chemistry, 2023)
      Strong fluorescence is a general feature of dipyrrolonaphthyridinediones bearing two nitrophenyl substituents. Methyl groups simultaneously being weakly electron-donating and inducing steric hindrance appear to be a key ...

    • Saddle-shaped aza-nanographene with multiple odd-membered rings 

      Krzeszewski, Maciej; Dobrzycki, Łukasz; Sobolewski, Andrzej L.; Cyrański, Michał K.; Gryko, Daniel T. (Royal Society of Chemistry, 2023)
      A saddle-shaped aza-nanographene containing a central 1,4-dihydropyrrolo[3,2-b]pyrrole (DHPP) has been prepared via a rationally designed four-step synthetic pathway encompassing intramolecular direct arylation, the Scholl ...

    • Unprecedented 1,2-Aryl Shift Accompanying Double Alkyne Benzannulation 

      Sanil, Gana; Krzeszewski, Maciej; Chaładaj, Wojciech; Danikiewicz, Witold; Knysh, Iryna; Dobrzycki, Łukasz; Staszewska-Krajewska, Olga; Cyrański, Michał; Jacquemin, Denis; Gryko, Daniel T. (Wiley, 2023)
      The tandem intramolecular hydroarylation of alkynes accompanied by a 1,2-aryl shift is described. Harnessing the unique electron-rich character of 1,4-dihydropyrrolo[3,2-b]pyrrole scaffold, we demonstrate that the ...