Results 61 to 70 of about 10,562 (252)
Angewandte Chemie, Volume 138, Issue 1, 2 January 2026.Molecular photoswitches dispersed in a cholesteric hydroxypropyl cellulose mesophase enable reversible, light‐driven tuning of structural color and polarization. Enantiomer‐specific effects and light‐responsive patterning highlight the potential of dynamic, cellulose‐based photonic materials.
Fathy Hassan +8 more
wiley +2 more sources
Red-Shifted Environmental Fluorophores and Their Use for the Detection of Gram-Negative Bacteria
Chemosensors, 2021 Two novel, water-soluble, merocyanine fluorophores were readily prepared by microwave-assisted synthesis. Full optical characterization was performed in a series of protic and aprotic solvents, and the dyes displayed fluorescence in the red region with ...
Alicia Megia-Fernandez +7 more
doaj +1 more source
Unusual Swelling Behavior of Hydrogels Modified with Spiropyran as Appendage or Crosslinker
Advanced Functional Materials, EarlyView.Not so innocent after all—spiropyran crosslinkers in methylenebisacrylamide‐crosslinked poly(acrylamide‐co‐acrylic acid) hydrogels increase crosslinking density, but also, counterintuitively, increase swelling. Charge complexation, cooperative chemo‐mechanical effects, and aggregation may explain these observations.
Michael M. Lerch +7 more
wiley +1 more source
The origin of the solvent dependence of fluorescence quantum yields in dipolar merocyanine dyes
Chemical Science, 2019 An increasing activation energy barrier to a conical intersection was identified as the reason for higher fluorescence lifetimes and quantum yields for merocyanines in polar solvents.
Joscha Hoche +8 more
semanticscholar +1 more source
Advanced Science, EarlyView.Utilizing a mitochondrial double‐targeted strategy, a novel near‐infrared fluorescent probe (FTZ‐2) is established for monitoring viscosity variations in ferroptosis‐mediated drug‐induced liver injury. In summary, this work provided a practical strategy for the early diagnosis and evaluation of liver injury.
Yongqing Zhou +5 more
wiley +1 more source
Nonlinear Optical Molecular Switches for Alkali Ion Identification
Molecules, 2014 This work demonstrates by means of DFT and ab initio calculations that recognition of alkali cations can be achieved by probing the variations of the second-order nonlinear optical properties along the commutation process in spiropyran/merocyanine ...
Aurélie Plaquet +2 more
doaj +1 more source
Determining the Accessibility of Zeolite L Channels Using the Color Change of Thionine Dyes [PDF]
, 2020 Host-guest materials are created when a guest dye molecule enters the channels within the zeolite host, which can be useful to understand how molecules act in a constrained environment.
Bowker, Alyssa
core +1 more source
Transient absorption spectroscopy on spiropyran monolayers using nanosecond pump–probe Brewster angle reflectometry [PDF]
, 2013 Self-assembled monolayers of 11-(3’,3’-dimethyl-6,8-dinitrospiro[chromene-2,2’-indoline]-1’-yl) undecanoic acid (amphiphilic spiropyran) at the air–water interface are studied using Brewster angle reflectometry.
Aarts +40 more
core +1 more source
Chemistry – A European Journal, EarlyView.A sulfonatocalix[4]arene–pyrene conjugate functions as a fluorescence chemosensor for the optical detection of biorelevant analytes in water. Its photoinduced electron transfer (PET) response is triggered by an induced‐fit recognition mechanism. Noncovalent assembly with an additional dye affords dual‐color ratiometric signaling via competitive PET ...
Joana N. Martins +4 more
wiley +1 more source
Synthesis and metal binding properties of N-alkylcarboxyspiropyrans
Beilstein Journal of Organic Chemistry, 2017 Spiropyrans bearing an N-alkylcarboxylate tether are a common structure in dynamic, photoactive materials and serve as colourimetric/fluorimetric cation receptors.
Alexis Perry, Christina J. Kousseff
doaj +1 more source