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Photochromic organic chemical compound
A spiropyran is a type of photochromic organic chemical compound, characterized by their ability to reversibly switch between two structural forms—spiropyran
Spiropyran
Supramolecular aggregates
solutions of photochromic spiropyran molecules to UV radiation. The ultraviolet light induces the conversion of the spiropyrans to merocyanine molecules
Quasi-crystals (supramolecular)
Quasi-crystals_(supramolecular)
Reversible chemical transformation by absorption of electromagnetic radiation
Keyvan Rad, Jaber; Balzade, Zahra; Mahdavian, Ali Reza (2022-06-01). "Spiropyran-based advanced photoswitchable materials: A fascinating pathway to the
Photochromism
Study of chemical reactions influenced by mechanical phenomena
sensing such as spiropyran, yellow fluorescent protein, PER-AZO or PER-DBF dyes in CB[8] rings and rhodamine-spirolactam derivatives. Spiropyran for example
Mechanochemistry
Molecule with ability to reversibly switch states
reversible pH response are spiropyran, hydrazones, Donor-Acceptor-Steenhouse Aduucts (DASA), heptamethine–oxonol dyes, etc. Spiropyran, SP changes its color
Molecular_switch
Storage with three-dimensional resolution for information
back to the 1950s, when Yehuda Hirshberg developed the photochromic spiropyrans and suggested their use in data storage. In the 1970s, Valerii Barachevskii
3D_optical_data_storage
Type of molecule
light. Several examples of photochromic compounds include: azobenzene, spiropyran, merocyanine, diarylethene, spirooxazine, fulgide, hydrazone, nobormadiene
Photoswitch
Chemical compound
Merocyanines are a class of polymethine dyes. They include quinophthalones and spiropyrans. which are clearly defined by set structural properties. Merocyanines
Merocyanine
Supramolecular structures held together other than by covalent bonds
pillar[5]arene, spiropyran, and pentanenitrile (free state and grafted to polymer) was created by Wang et al. After UV irradiation, spiropyran transforms into
Host–guest_chemistry
Molecule which creates reactive species when exposed to radiation
Anne-Laure (2023). "Two-photon photopolymerization directly initiated by spiropyran photochromic molecules". Light: Advanced Manufacturing. 4 (1): 1. doi:10
Photoinitiator
Molecule with two joined rings
carbon. An example of a spirocyclic compound is the photochromic switch spiropyran. The naming of bicyclic molecules is described by IUPAC nomenclature.
Bicyclic_molecule
American chemist
COFs containing spiropyran and porphyrin derivatives. The team evaluated Förster resonance energy transfer (FRET) between the spiropyran and porphyrin moieties
Natalia_Shustova
Molecular-scale artificial or biological device
Similarly, ring-opening and -closing reactions such as those seen for spiropyran and diarylethene can also produce curved shapes. Another common mode of
Molecular_machine
Chemical change induced by light
holography, as spatial filter or optical switching. Azobenzenes, stilbenes, spiropyrans, are prominent classes of compounds subject to photoisomerism. In the
Photoisomerization
Photons that excite electrons to a higher energy level in an atom
B.; ZINK, J. I. (1990-09-11). "ChemInform Abstract: Photochromism of Spiropyrans in Aluminosilicate Gels". ChemInform. 21 (37) chin.199037109. doi:10
Photoexcitation
Property of substances to change colour due to a change in temperature
halochromism. The dyes most commonly used are spirolactones, fluorans, spiropyrans, and fulgides. The acids include bisphenol A, parabens, 1,2,3-triazole
Thermochromism
Device or smart label that shows temperature history
commercially used reaction (OnVu) involves photochromism. A photochromic spiropyran is first made to change color by "charging" with UV light; this changes
Time_temperature_indicator
American materials scientist
In one set of experiments, researchers used spiropyran molecules to detect mechanical stress. The spiropyran (SP) mechanophore was covalently bonded into
Nancy_Sottos
Diarylethene Luis Moroder, Rudolf K. Allemann Photochromism Photodynamic therapy Spiropyran Umezawa N, Noro Y, Ukai K, Kato N, Higuchi T (July 2011). "Photocontrol
Photoactivated_peptide
Class of dyes
Neutrocyanines: R2N+=CH[CH=CH]n-CN and R2N+=CH[CH=CH]n-CHO Merocyanines including spiropyrans and quinophthalones. Apocyanines where two quaternary nitrogens are joined
Cyanine
Nanostructures of protein-polymer conjugates
responsive microcapsule has been synthesized by incorporating photoswitchable spiropyran units and the thermoresponsive monomer N-isopropylacrylamide into the
Polymer-protein_hybrid
Scottish chemist (1886–1959)
polyene synthesis, Squalene, terpenes, pyrylium salts, algal pigments, and spiropyrans. He was also instrumental in the development of DDT to fight malaria
Ian_Heilbron
conformational dynamics of antibiotic-binding aptamers: Photochromic spiropyrans are organic molecules that can be used for the triggering of biological
Cluster of Excellence Frankfurt Macromolecular Complexes
Cluster_of_Excellence_Frankfurt_Macromolecular_Complexes
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