Results 111 to 120 of about 5,917 (220)

New Triphenylphosphonium Salts of Spiropyrans: Synthesis and Photochromic Properties

open access: yesMolecules
The most important area of modern pharmacology is the targeted delivery of drugs, and one of the most promising classes of chemical compounds for creating drugs of this kind are the photochromic spiropyrans, capable of light-controlled biological ...
Artur A. Khuzin   +3 more
doaj   +1 more source

Optical switching of the Dirac point in graphene multilayer field-effect transistors functionalized with spiropyran [PDF]

open access: yes, 2014
A facile method for achieving optical switching of the Dirac point and conductance in reduced graphene oxide multilayer FETs that are non-covalently functionalized with a photoresponsive spiropyran derivative is presented.
Cho, Jeong Ho   +4 more
core   +1 more source

Mechanochromic Organic Materials: Molecular Mechanisms and Multidimensional Applications

open access: yesAdvanced Physics Research, Volume 5, Issue 2, February 2026.
Mechanochromic (MC) organic materials change color in response to mechanical force. This review elucidates the molecular mechanisms (e.g., aggregation‐induced emission, AIE) and explores their multidimensional applications in sensors, anti‐counterfeiting, biomedical devices, and structural health monitoring, providing a roadmap for future smart ...
Xiaozhe Yin   +5 more
wiley   +1 more source

Optically Defined Modal Sensors Incorporating Spiropyran-Doped Liquid Crystals with Piezoelectric Sensors

open access: yesSensors, 2011
We integrated a piezoelectric sensing layer lamina containing liquid crystals (LC) and spiropyran (SP) in a LC/SP mixture to create an optically reconfigurable modal sensor for a cantilever beam.
Hui-Lung Kuo   +3 more
doaj   +1 more source

Transient Brewster angle reflectometry of spiropyran monolayers [PDF]

open access: yes, 2010
Brewster angle reflectometry has been developed as a tool for determining the absorbance and refractive index changes in molecular monolayers containing spiropyran. The method is sensitive to changes in both the real and imaginary parts of the refractive
Aarts   +42 more
core   +1 more source

Optically Switchable Full‐Color Quantum Dots via Diarylethene Photoswitches for Smart Display and Security

open access: yesSmartMat, Volume 7, Issue 1, February 2026.
An innovative photoswitchable system based on quantum dots and diarylethene enables reversible RGB photoluminescence switching. The system achieves over 90% photoluminescence quantum yield in the on state and a high on/off ratio of ~100. Efficient switching is driven by synergistic Förster resonance and triplet energy transfer, applicable for ...
Shuai Zhang   +6 more
wiley   +1 more source

Photoschaltbare Peptide als molekulare Werkzeuge zur Kodierung von Strukturordnung und ‐Unordnung in intrazellulären Aggregaten

open access: yesAngewandte Chemie, Volume 138, Issue 3, 16 January 2026.
Wir präsentieren ein photoschaltbares Peptid‐Konjugat, das eine isomerabhängige Selbstassemblierung aufweist: Das planare trans‐Isomer bildet geordnete Nanofibrillen, während das nicht‐planare cis‐Isomer ungeordnete Aggregate ausbildet.
Julian Link   +6 more
wiley   +1 more source

Untersuchungen am System Spiropyran + Säure ⇄ Farbsalz / Investigations on the System Spiropyran + Acid ⇄ Pyrylium Salt

open access: yesZeitschrift für Naturforschung B, 1970
We could prove that the system spiropyran/acid/pyrylium salt follows the equilibrium relation Spiropyran+acid ⇄ pyrylium salt. This color reaction can be used as an indicatory system. In this case the acid has to be produced instandaneously within the system.
G. Arnold, G. Paal, H.-P. Vollmer
openaire   +1 more source

Photoswitchable Peptides as Molecular Tools to Encode Structural Order and Disorder in Intracellular Assemblies

open access: yesAngewandte Chemie International Edition, Volume 65, Issue 3, 16 January 2026.
We present a photoswitchable peptide conjugate which exhibits isomerism‐dependent self‐assembly: the planar trans‐isomer assembles into well‐ordered nanofibers while the non‐planar cis‐isomer yields disordered aggregates. Our study offers a direct visualization on the effects of structure formation inside living cells.
Julian Link   +6 more
wiley   +1 more source

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