Results 11 to 20 of about 10,562 (252)

Spiropyran–Merocyanine Based Photochromic Fluorescent Probes: Design, Synthesis, and Applications

ACS Omega, 2022
Due to ever-increasing insights into their fundamental properties and photochromic behaviors, spiropyran derivatives are still a target of interest for researchers.
Mou Mandal, Dipanjan Banik, Anirban Karak, S. Manna, A. Mahapatra   +4 more
semanticscholar   +1 more source

Large, Tunable, and Reversible pH Changes by Merocyanine Photoacids.

Journal of the American Chemical Society, 2021
Molecular photoswitches capable of generating precise pH changes will allow pH-dependent processes to be controlled remotely and noninvasively with light. We introduce a series of new merocyanine photoswitches, which deliver reversible bulk pH changes up
Laura Wimberger, S. Prasad, Martin D. Peeks, Joakim Andréasson, T. Schmidt, Jonathon E. Beves   +5 more
semanticscholar   +1 more source

On-Demand Reversible UV-Triggered Interpenetrating Polymer Network-Based Drug Delivery System Using the Spiropyran-Merocyanine Hydrophobicity Switch.

ACS Applied Materials and Interfaces, 2021
A reversible switchable on-demand UV-triggered drug delivery system (DDS) based on interpenetrating polymer networks (IPNs) with silicone as the host polymer and spiropyran (SP)-functionalized guest polymer is designed and demonstrated.
M. Ghani, A. Heiskanen, Janko Kajtez, B. Rezaei, N. Larsen, P. Thomsen, A. Kristensen, A. Žukauskas, M. Alm, J. Emnéus   +9 more
semanticscholar   +1 more source

Hybrid Molecules Based on Fullerene C₆₀ and Spiropyrans as a Promising Approach to the Creation of Anticancer Drugs

Chemistry Proceedings, 2021
In this work, we present a novel spiropyran–containing photochromic pyrrolidinofullerene as a promising agent for the photodynamic therapy of cancer.
Artur A. Khuzin, Liliya L. Khuzina, Airat R. Tuktarov, Usein M. Dzhemilev   +3 more
doaj   +1 more source

Photochromism of a Spiropyran in Low-Temperature Matrices: Unprecedented Bidirectional Switching between a Merocyanine and an Allene Intermediate.

Journal of Physical Chemistry A, 2022
Photochromism of spiropyrans has attracted much attention due to its potential in many light-controlled system applications. However, several fundamental aspects regarding the structure, energetics, and mechanistic details of the transformations of ...
Cláudio M. Nunes, N. Pereira, R. Fausto
semanticscholar   +1 more source

Generation of an Elusive Permanent Merocyanine via a Unique Mechanochemical Reaction Pathway.

Journal of the American Chemical Society, 2021
We report the discovery of a 2H-naphtho[1,2-b]pyran mechanophore that produces a permanent merocyanine dye upon mechanochemical activation, in contrast to the reversible product generated photochemically.
Molly E. McFadden, M. Robb
semanticscholar   +1 more source

Transparent Organogels as a Medium for the Light-Induced Conversion from Spiropyran to Merocyanine

Gels, 2023
Low-molecular-weight peptide gelators are a versatile class of compounds able to form gels under a variety of conditions, even via simple ultrasound sonication.
Demetra Giuri, Paolo Ravarino, Claudia Tomasini   +2 more
doaj   +1 more source

Tuning Exciton Coupling of Merocyanine Nucleoside Dimers by RNA, DNA and GNA Double Helix Conformations

Angewandte Chemie, 2021
Exciton coupling between two or more chromophores in a specific environment is a key mechanism associated with color tuning and modulation of absorption energies.
Julia Dietzsch, D. Bialas, Johannes Bandorf, F. Würthner, C. Höbartner   +4 more
semanticscholar   +1 more source

Fluorescence of molecular composites that consist of nematic liquid crystal and merocyanins

Біофізичний вісник, 2020
Background: Considered merocyanine molecules have donor D and acceptor A moieties connected by polymer chain. The conjugated donor D and acceptor A parts of merocyanine molecules are planar in the ground state.
M. B. Malynovskyi, M. M. Sevryukova, Yu. P. Piryatinski   +2 more
doaj   +1 more source

Photochromic and Luminescent Properties of a Salt of a Hybrid Molecule Based on C₆₀ Fullerene and Spiropyran—A Promising Approach to the Creation of Anticancer Drugs

Molecules, 2023
For the first time a pyrrolidinofullerene salt containing a spiropyran group and an ammonium group, capable of reversibly reacting to UV radiation, has been synthesized.
Artur A. Khuzin, Dim I. Galimov, Liliya L. Khuzina   +2 more
doaj   +1 more source