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Journal articles on the topic 'Photochromic molecule'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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1

Johmoto, Kohei, Hidehiro Uekusa, Yuji Kikuchi, Hiroki Takahagi, Kosuke Ono, and Nobuharu Iwasawa. "Photochromism change by conformation control in macrocyclic boronic ester cavity." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C654. http://dx.doi.org/10.1107/s2053273314093450.

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N-salicylideneaniline derivatives are known to show photochromism by UV light, and it depends on the molecular conformation in the crystal. The twisted molecule is photochromic but the planar one is not[1,2]. N-salicylidene-2-aminopyridine (2SAP) always has a planar conformation due to the chemical structure without steric hindrance, therefore 2SAP is known as non-photochromic. However, by confining the molecule in a cavity of the macrocyclic boronic ester 1[3], the conformation and photochromism can be controlled. The inclusion crystal of 1 (homo-parallel form) has a special feature to have a

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2

Rawat, M. S. M., Sudagar Mal, and Pramod Singh. "Photochromism in Anils - A Review." Open Chemistry Journal 2, no. 1 (2015): 7–19. http://dx.doi.org/10.2174/1874842201502010007.

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This review describes in brief the historical perspective of photochromism and photochromic behaviour of ‘Anils’. This phenomenon among ‘Anils’ is exhibited due to the tautomerism between enol and keto form via six membered hydrogen transfer between the phenolic hydrogen and imine nitrogen and show the phenomenon of solid-state photochromism and thermochromism and photochromism in rigid glassy solutions as well. Photochromic property in ‘Anils’ is a characteristic of the molecule, but their chromo behaviour is not only influenced by the crystal structure of anils but also by the substituents i

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3

Wang, Hai Bo, Cong Bin Fan, and Gang Liu. "Study on Photochromic Perfluorocyclopetene Containing Six-Numbered Unit as Optical Recording Materials." Applied Mechanics and Materials 327 (June 2013): 58–62. http://dx.doi.org/10.4028/www.scientific.net/amm.327.58.

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A reversible molecule switching of symmetrical photochromic diarylethene 1,2-bis methyl phenyl perfluorocyclopentene has been synthesized and its photochromic and simulated molecule structure were also investigated. The compound exhibited photochromism both in solution and PMMA film but no photochromism in solid state. In hexane, the open-ring isomer of the diarylethene1oshowing an absorption peak at 308 nm. Upon irradiation with 313 nm light, a new absorption band in the visible region centered at 595 nm emerged to form closed isomer1c. This compound can be used as optical recording materials

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4

Yu, Tao, Depei Ou, Leyu Wang, et al. "A new approach to switchable photochromic materials by combining photochromism and piezochromism together in an AIE-active molecule." Materials Chemistry Frontiers 1, no. 9 (2017): 1900–1904. http://dx.doi.org/10.1039/c7qm00160f.

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5

Yamashita, Hiroaki, and Jiro Abe. "Pentaarylbiimidazole, PABI: an easily synthesized fast photochromic molecule with superior durability." Chem. Commun. 50, no. 62 (2014): 8468–71. http://dx.doi.org/10.1039/c4cc03137g.

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6

He, Shang Hua, Gang Liu, and Ren Jie Wang. "A New Photochromic Diarylethene for Reversible Molecule Switching Properties Based on Pyrrole and Thiophene." Advanced Materials Research 284-286 (July 2011): 2239–42. http://dx.doi.org/10.4028/www.scientific.net/amr.284-286.2239.

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A new unsymmetrical photochromic diarylethene bearing a pyrrole and a thiophene aryl unit 1-(5-cyan-1,2-dimethylpyrrole)-2-(5-aldehyde-2-butylthiophene) perfluorocyclopentene(1a) has been synthesized. Its properties, including photochromism and kinetics were investigated in detail. It underwent reversible cyclization and cycloreversion reactions upon alternating with UV and visible light both in solution and in PMMA film. The results showed that this compound exhibited reversible photochromism, changing from colorless to blue upon irradiation with UV light, in which absorption maximum were obs

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7

Schedel, Christine, Heiko Peisert, Thomas Chassé, and Marcus Scheele. "Evidence for Photo-Switchable Carrier Mobilities in Blends of PbS Nanocrystals and Photochromic Dithienylcyclopentene Derivatives." Zeitschrift für Physikalische Chemie 232, no. 9-11 (2018): 1369–81. http://dx.doi.org/10.1515/zpch-2018-1128.

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Abstract We use derivatives of the photochromic molecule 1,2-bis(5′-carboxy-2′-methylthien-3′-yl)-cyclopentene in combination with semiconducting PbS nanocrystals to probe the feasibility of solid-state optical switching in hybrid nanostructured thin films. X-ray photoelectron spectroscopy is applied to differentiate between the different constituents in the blends, while field-effect transistor measurements in the dark reveal the effect of prior illumination with visible or ultra-violet light on the transport properties. By analyzing the response of the electric conductivity, the carrier conc

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8

Ding, Hai Xin, Hong Jing Jia, Cong Bin Fan, and Gang Liu. "Study on Photochromic Properties of 1-(2-methoxyphenyl)-2-[2-methyl-5-(1,3-dioxolane)-3-thienyl]perfluorocyclopentene." Advanced Materials Research 830 (October 2013): 246–49. http://dx.doi.org/10.4028/www.scientific.net/amr.830.246.

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A new unsymmetrical photochromic diarylethene 1o, which is named 1-(2- methoxyphenyl)-2-[2-methyl-5-(1,3-dioxolane)-3-thienyl]perfluorocyclopentene, was synthesized. Its photochromic and simulated molecule structure were also investigated in detail. This diarylethene underwent reversible photochromism, changing between colorless and blue in hexane solution upon appropriate irradiation with UV/vis light. The kinetic experiments illustrated that the cyclization/cycloreversion process of this compound was determined to be the zeroth/first reaction. In addition, this compound can be used as optica

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9

Wang, Leyu, Tao Yu, Zongliang Xie, et al. "Gated photochromic molecules with AIEgen: turn-on the photochromism with an oxidation reagent." RSC Advances 8, no. 33 (2018): 18613–18. http://dx.doi.org/10.1039/c8ra02828a.

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10

Liu, Wei Jun, Cai Mei Zhang, Shou Zhi Pu, and Shi Qiang Cui. "Synthesis and Properties of a Blue Photochromic Diarylethene Derivative." Advanced Materials Research 156-157 (October 2010): 1639–43. http://dx.doi.org/10.4028/www.scientific.net/amr.156-157.1639.

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A new blue photochromic diarylethene compound, 1-[2-methyl-5-aldehydeyl-3-thienyl]-2- [1,2-dimethyl-5-cyanoyl-3-pyrroleyl]perfluorocyclopentene (1a), was synthesized and its photochemical properties, such as photochromism in solution and in PMMA amorphous film, fluorescence and optical storage properties were investigated in detail. The results showed that it can be useful in fluorescence molecule switch, scale optoelectronics and potential use for data storage.

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11

Gayen, Pallab. "Effect of Rate and Quantum Yield of 1-alkyl-2-(arylazo) Imidazoles on the Surface of Silver Nps." Oriental Journal Of Chemistry 37, no. 5 (2021): 1229–34. http://dx.doi.org/10.13005/ojc/370530.

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1-Alkyl-2-(arylazo)imidazole(RaaiR/) exists in trans-structure about –N=N- bond at ambient condition. Upon optical excitation in UV region the trans-RaaiR/ isomerises to cis-RaaiR/. The photochromism is very susceptible to internal substituents and external environment like solvent polarity, viscosity and presence of innocent foreign molecule. The changes from cis-to-trans occurs slowly in visible light excitation it has significantly faster rate at higher temperature. In this work we have studied the effect of silver nanoparticle on the photochromic activity of RaaiR/. The quantum yield of th

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12

Xu, Hong Yan, Xiao Rong Dong, and Shou Zhi Pu. "Synthesis, Photochromism and Fluorescent Switch of a Novel Diarylethene Compound." Advanced Materials Research 952 (May 2014): 96–99. http://dx.doi.org/10.4028/www.scientific.net/amr.952.96.

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A new fluorescence switch molecule based on a photochromic diarylethene and a fluorene unit was designed and constructed successfully. The compound exhibited good photochromism in acetonitrile with alternating irradiation by UV/Vis light, and the maxima absorption of its closed-ring isomer (1b) are 565nm. The open-ring isomer of the diarylethene1aexhibited relatively strong fluorescence at 420 nm when excited at 290 nm. Its fluorescence intensity decreased along with the photochromism from open-ring isomers to closed-ring isomers upon irradiation with 297 nm UV light.

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13

Pardo, Botello María del Rosario, Marcos Zayat, and David Levy. "Photochromic organic–inorganic hybrid materials." Chemical Society Reviews 40, no. 2 (2011): 672–87. https://doi.org/10.1039/c0cs00065e.

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Photochromic organic-inorganic hybrid materials have attracted considerable attention owing to their potential application in photoactive devices, such as optical memories, windows, photochromic decorations, optical switches, filters or non-linear optics materials. The growing interest in this field has largely expanded the use of photochromic materials for the purpose of improving existing materials and exploring new photochromic hybrid systems. This tutorial review summarizes the design and preparation of photochromic hybrid materials, and particularly those based on the incorporation of org

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14

Matsuda, Kenji. "Photochromic diarylethene as an information processing unit: Magnetic and electric switching." Pure and Applied Chemistry 80, no. 3 (2008): 555–61. http://dx.doi.org/10.1351/pac200880030555.

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Photochromic compounds reversibly change not only the absorption spectra but also their geometrical and electronic structures. This principle can be applied for the photoswitching of the physical properties of the molecular materials. In particular, photoswitching of the flow of information through the molecule is interesting because information processing using molecular devices is attracting interest in the molecular electronics field. The photoswitchings of the magnetic exchange interaction and the electrical conductance using photochromic diarylethene are described.

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15

Khuzin, A. A., and L. L. Khuzina. "SYNTHESIS AND PHOTOCHROMIC PROPERTIES OF A NEW FUNCTIONALLY SUBSTITUTED MOLECULE BASED ON SPIROPYRAN." Izvestia Ufimskogo Nauchnogo Tsentra RAN, no. 2 (June 16, 2025): 58–62. https://doi.org/10.31040/2222-8349-2025-0-2-58-62.

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In this work, we report the synthesis of a new salt of photochromic spiropyran containing various functional groups and capable of reversibly reacting to external influences. It is shown that the synthesized spiropyran containing –CHO, –NO2, –OCH3, –(CH2)5PPh3 groups in its structure exhibits positive photochromism, as evi denced by its reversible photoinduced transformations under the action of ultraviolet and visible radiation. It is established that the presence of functional groups in the spirophotochrome molecule contributes to an increase in resistance to photodegradation.

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16

Bénard, Sophie, Eric Rivière, Pei Yu, Keitaro Nakatani, and Jean François Delouis. "A Photochromic Molecule-Based Magnet†." Chemistry of Materials 13, no. 1 (2001): 159–62. http://dx.doi.org/10.1021/cm001163p.

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17

Pardo, Botello María del Rosario, Marcos Zayat, and David Levy. "Effect of the chemical environment on the light-induced degradation of a photochromic dye in ormosil thin films." Journal of Photochemistry and Photobiology A: Chemistry 198 (March 29, 2008): 232–36. https://doi.org/10.1016/j.jphotochem.2008.03.013.

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The naphthopyran (NP) derivative (3-(2,4-dimethoxyphenyl)-3-(4-methoxyphenyl)-3H-naphtho[2,1-b]pyran) exhibits photochromism in solution or embedded in solid matrices. The molecule suffers a progressive photodegradation upon prolonged irradiation with UV-light, which depends strongly on the solvent or the embedding matrix. The photodegradation of the dye molecules in THF or benzene solutions is much faster than that of the molecules embedded in solid matrices (polymer or ormosil). The organic functional groups incorporated in the network of the ormosil matrix play an important role in the phot

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18

Pardo, Botello María del Rosario, Marcos Zayat, and David Levy. "Temperature dependence of the photochromism of naphthopyrans in functionalized sol–gel thin films." Journal of Materials Chemistry 16 (March 9, 2006): 1734–40. https://doi.org/10.1039/b600746e.

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A photochromic naphthopyran derivative, 3-(2,4-dimethoxyphenyl)-3-(4-methoxyphenyl)-3<em>H</em>-naphtho[2,1-<em>b</em>]pyran, was embedded in sol–gel prepared phenyl (Ph) and pentafluorophenyl (pFPh) functionalized silica thin films. The functionalization of the matrix surface and the temperature both play important roles in the photochromic properties of the dye molecules as they affect their interaction with the embedding ormosil matrix and, therefore, the equilibrium between coloured and colourless forms of the molecule. The bleaching kinetics of the dye embedded in these ormosil matr

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19

Tang, Fei-Ying, Jia-Nan Hou, Kai-Xin Liang, Ying Liu, Liu Deng, and You-Nian Liu. "A facile way to achieve all-photonic logic functions and photo-printing based on a donor–acceptor Stenhouse adduct." New Journal of Chemistry 41, no. 14 (2017): 6071–75. http://dx.doi.org/10.1039/c7nj00815e.

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A small bi-photochromic molecule containing donor–acceptor Stenhouse adduct moiety and azobenzene moiety was synthesized. Its photochromic and fluorescent properties were studied. Based on its unique characteristics, all photonic logic functions and photo-printing were achieved.

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20

Deniz, Erhan, Stefania Impellizzeri, Salvatore Sortino, and Françisco M. Raymo. "A photoswitchable bichromophoric oxazine with fast switching speeds and excellent fatigue resistance." Canadian Journal of Chemistry 89, no. 2 (2011): 110–16. http://dx.doi.org/10.1139/v10-070.

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In search of strategies to regulate the photochemical and photophysical properties of photochromic oxazines, we designed a multichromophoric compound incorporating 3H-indole, benzooxazine, and 2-(4-dimethylaminophenyl)ethynyl fragments. We synthesized this molecule in two steps in an overall yield of 51%, starting from commercial precursors. The ultraviolet irradiation of this photochrome opens a [1,3]oxazine ring in less than 6 ns to generate a zwitterionic isomer with a quantum yield of 0.10. In particular, the photoinduced ring opening generates a 4-nitrophenolate anion and a 3H-indolium ca

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21

Lukyanov, B. S., Yu S. Alekseenko, E. L. Mukhanov, et al. "Spiropyrans Containing the Reactive Substituents in the 2H-Chromene Moiety." International Journal of Photoenergy 2007 (2007): 1–6. http://dx.doi.org/10.1155/2007/10583.

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Some spiropyrans containing functional substituents in the [2H]-chromene part of the molecule were synthesized and their photochromic properties in solution and solid state were investigated. The presence of the formyl group in the [2H]-chromene fragment enhances the possibility to show photochromic properties in solution.

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22

Kim, Youngsang, Safa G. Bahoosh, Dmytro Sysoiev, Thomas Huhn, Fabian Pauly, and Elke Scheer. "Inelastic electron tunneling spectroscopy of difurylethene-based photochromic single-molecule junctions." Beilstein Journal of Nanotechnology 8 (December 6, 2017): 2606–14. http://dx.doi.org/10.3762/bjnano.8.261.

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Diarylethene-derived molecules alter their electronic structure upon transformation between the open and closed forms of the diarylethene core, when exposed to ultraviolet (UV) or visible light. This transformation results in a significant variation of electrical conductance and vibrational properties of corresponding molecular junctions. We report here a combined experimental and theoretical analysis of charge transport through diarylethene-derived single-molecule devices, which are created using the mechanically controlled break-junction technique. Inelastic electron tunneling (IET) spectros

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23

Chai, Xianzhi, Hai-Hao Han, Yi Zang, et al. "Targeted photoswitchable imaging of intracellular glutathione by a photochromic glycosheet sensor." Beilstein Journal of Organic Chemistry 15 (October 7, 2019): 2380–89. http://dx.doi.org/10.3762/bjoc.15.230.

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The development of photochromic fluorescence sensors with dynamic and multiple-signaling is beneficial to the improvement of biosensing/imaging precision. However, elaborate designs with complicated molecular structures are always required to integrate these functions into one molecule. By taking advantages of both redox-active/high loading features of two-dimensional (2D) manganese dioxide (MnO2) and dynamic fluorescence photoswitching of photochromic sensors, we here design a hybrid photochromic MnO2 glycosheet (Glyco-DTE@MnO 2 ) to achieve the photoswitchable imaging of intracellular glutat

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Akitsu, Takashiro, Chiaki Ishioka, and Tsubasa Itoh. "Polarized light spectroscopy of azobenzene or disperse red 1 with Mn12 single-molecule magnets in PMMA film hybrid materials." Open Chemistry 7, no. 4 (2009): 690–96. http://dx.doi.org/10.2478/s11532-009-0075-2.

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AbstractA series of organic/inorganic hybrid materials containing the single-molecule magnet [Mn12(CH3COO)16(H2O)4O12]·2CH3COOH·4H2O with the photochromic compounds azobenzene or disperse red 1 cast into polymethyl methacrylate films was prepared. To understand the photomodulation of analogous mixtures’ AC susceptibility, we investigated the molecular alignment based on Weigert’s effect accompanying cycles of cis-trans photoisomerization by alternate irradiations with polarized UV and visible light. Polarized electronic spectra of the hybrid materials demonstrated gradually increasing anisotro

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25

Ortica, F., D. Levi, P. Brun, R. Guglielmetti, G. Favaro, and U. Mazzucato. "Photobehaviour ofZ-1,2-di-(3′-methoxynaphth-2′-yl)ethene as model compound of biphotochromic supermolecules withZ-ethenic bridge." International Journal of Photoenergy 3, no. 3 (2001): 153–63. http://dx.doi.org/10.1155/s1110662x01000198.

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This work is part of a research project aimed at investigating the behaviour of biphotochromic supermolecules where two photochromic units of the spirooxazine or chromene series are linked through a conjugated or unconjugated spacer. Preliminary investigations showed that the compounds with ethane, acetylene or ester bridges behave as classical photochromes while those with an ethene bridge showed good coloration accompanied by unusual thermal irreversibility at room temperature. The temperature effect on the spectral behaviour allowed such irreversibility to be explained by the occurrence of

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26

Yoon, Lucy U., Surya B. Adhikari, Ephraiem S. Sarabamoun, et al. "Exciton dissociation in quantum dots connected with photochromic molecule bridges." Journal of Materials Chemistry C 9, no. 44 (2021): 16006–13. http://dx.doi.org/10.1039/d1tc04451f.

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27

Li, Ruiji, Hiroki Arai, Yoichi Kobayashi, Katsuya Mutoh, and Jiro Abe. "Molecular design to increase the photosensitivity of photochromic phenoxyl–imidazolyl radical complexes." Materials Chemistry Frontiers 3, no. 11 (2019): 2380–87. http://dx.doi.org/10.1039/c9qm00468h.

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Kobayashi, Yoichi, Yukie Mamiya, Katsuya Mutoh, et al. "Excited state dynamics for visible-light sensitization of a photochromic benzil-subsituted phenoxyl-imidazolyl radical." Beilstein Journal of Organic Chemistry 15 (October 4, 2019): 2369–79. http://dx.doi.org/10.3762/bjoc.15.229.

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Visible-light sensitized photoswitches have been paid particular attention in the fields of life sciences and materials science because long-wavelength light reduces photodegradation, transmits deep inside of matters, and achieves the selective excitation in condensed systems. Among various photoswitch molecules, the phenoxyl-imidazolyl radical complex (PIC) is a recently developed thermally reversible photochromic molecule whose thermal back reaction can be tuned from tens of nanoseconds to tens of seconds by rational design of the molecular structure. While the wide range of tunability of th

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Cai, Li-Zhen, Pei-Yu Guo, Ming-Sheng Wang, and Guo-Cong Guo. "Photoinduced magnetic phase transition and remarkable enhancement of magnetization for a photochromic single-molecule magnet." Journal of Materials Chemistry C 9, no. 7 (2021): 2231–35. http://dx.doi.org/10.1039/d0tc05490a.

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Rogacz, Katarzyna, Michał Magott, Sebastian Baś, Magdalena Foltyn, Michał Rams, and Dawid Pinkowicz. "A photochromic trinuclear dysprosium(iii) single-molecule magnet with two distinct relaxation processes." RSC Advances 14, no. 21 (2024): 14515–22. http://dx.doi.org/10.1039/d4ra01645a.

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Qiu, Jiang-Zhen, Yong You, Ye Yu, et al. "A Mononuclear Iron(II) Spin-Crossover Molecule Decorated by Photochromic Azobenzene Group." Molecules 27, no. 5 (2022): 1571. http://dx.doi.org/10.3390/molecules27051571.

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Aiming at constructing photoresponsive spin crossover (SCO) behavior, herein we designed a new ligand Abtz (Abtz = (E)-N-(4-((E)-phenyldiazenyl)phenyl)-1-(thiazol-4-yl)methanimine) which was decorated by a photochromic azobenzene group. Based on this photochromic ligand, a mononuclear Fe(II) SCO molecule [Fe(Abtz)3](BF4)2·(EAC)2 (1, EAC = ethyl acetate) was successfully synthesized and showed a complete one-step SCO behavior. Under continuous UV light and blue-light exposure, the cis–trans photoisomerization of both ligand Abtz and compound 1 in the liquid phase was confirmed through UV–Vis sp

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Wang, Lili, Yuanyuan Li, Xuejiao You, et al. "An erasable photo-patterning material based on a specially designed 4-(1,2,2-triphenylvinyl)aniline salicylaldehyde hydrazone aggregation-induced emission (AIE) molecule." Journal of Materials Chemistry C 5, no. 1 (2017): 65–72. http://dx.doi.org/10.1039/c6tc03791g.

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Saad, Ali, Olivier Oms, Anne Dolbecq, et al. "A high fatigue resistant, photoswitchable fluorescent spiropyran–polyoxometalate–BODIPY single-molecule." Chemical Communications 51, no. 89 (2015): 16088–91. http://dx.doi.org/10.1039/c5cc06217a.

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Kim, Daigeun, Jongho Kim, and Taek Seung Lee. "Photoswitchable chromic behavior of conjugated polymer films for reversible patterning and construction of a logic gate." Polymer Chemistry 8, no. 36 (2017): 5539–45. http://dx.doi.org/10.1039/c7py01145h.

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Photoswitchable fluorescent films were constructed using a conjugated polymer as a fluorescence-color changeable unit and a photochromic molecule as a phototriggered, selectively energy-accepting component.

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Zhang, Xing, Youxin Fu, Jianping Liu, et al. "A hydrogen peroxide activatable nanoprobe for light-controlled “double-check” multi-colour fluorescence imaging." Nanoscale 12, no. 44 (2020): 22527–33. http://dx.doi.org/10.1039/d0nr04881j.

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Yonekawa, Izumi, Katsuya Mutoh, and Jiro Abe. "Visible light intensity dependent negative photochromism of a binaphthyl-bridged phenoxyl-imidazolyl radical complex." Chemical Communications 55, no. 9 (2019): 1221–24. http://dx.doi.org/10.1039/c8cc09591d.

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We herein report a novel biphotochromic molecule composed of two fast negative photochromic phenoxyl-imidazolyl radical complex units showing incident light intensity dependence of the photochemical reaction.

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He, Jin, Fan Chen, Paul A. Liddell, et al. "Switching of a photochromic molecule on gold electrodes: single-molecule measurements." Nanotechnology 16, no. 6 (2005): 695–702. http://dx.doi.org/10.1088/0957-4484/16/6/012.

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Camarero, Núria, Ana Trapero, Ariadna Pérez-Jiménez, et al. "Photoswitchable dynasore analogs to control endocytosis with light." Chemical Science 11, no. 33 (2020): 8981–88. http://dx.doi.org/10.1039/d0sc03820b.

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We've combined the pharmacological properties of the dynamin inhibitor dynasore and the photochromic properties of an azobenzene group, to obtain the first light-regulated small-molecule inhibitor of endocytosis.

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Fukaminato, Tuyoshi, and Masahiro Irie. "Single-molecule Optical Memory Based on Photochromic Materials." Review of Laser Engineering 35, Supplement (2007): 205–6. http://dx.doi.org/10.2184/lsj.35.205.

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Börjesson, K., M. Herder, L. Grubert, et al. "Optically switchable transistors comprising a hybrid photochromic molecule/n-type organic active layer." Journal of Materials Chemistry C 3, no. 16 (2015): 4156–61. http://dx.doi.org/10.1039/c5tc00401b.

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Photoswitchable transistors based on a blend of an n-type fullerene derivative and a photochromic diarylethene can be gated either through the gate electrode or by photoisomerization of the diarylethene molecules.

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Fan, Cong Bin, Shou Zhi Pu, and Wei Jun Liu. "Photochromic Fluorescence Switching Diarylethene Flanking a Methoxy Group." Key Engineering Materials 474-476 (April 2011): 1515–18. http://dx.doi.org/10.4028/www.scientific.net/kem.474-476.1515.

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Fluorescent photoswitching molecule in which photochromic diarylethene with six-number phenyl unit and thiophene ring attached a phenyl methoxy group was synthesized. The compound exhibited pronounced photochromic and synchronous fluorescence switching properties. Irradiation of the open form of compound with UV light resulted in immediate photocyclization to the blue closed form with nonfluorescence; the colorless open form with fluorescence character could be regenerated by irradiation with visible light. In terms of potential use for optical storage and readout, this compound displays fluor

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Pardo, Botello María del Rosario, Marcos Zayat, and David Levy. "Reaching bistability in a photochromic spirooxazine embedded sol-gel hybrid coatings." Journal of Materials Chemistry 19 (July 20, 2009): 6756–60. https://doi.org/10.1039/b909198j.

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Novel photochromic coatings were designed having a remarkable long-term stability of both thecoloured state and colourless states in the dark (bistability). The coatings consist of a dispersion ofa commercial spirooxazine in a functionalized sol–gel hybrid matrix, acquiring a deep purple colorationupon irradiation with UV-light. In order to stabilize the coloured form of the dye, a zinc salt, capable offorming a chelate with the photochromic molecule when irradiated, was incorporated into the matrix,resulting in a drastic reduction of the thermal bleaching kinetics. The coloured coatings

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Xin, Xiu Lan, Xue Han, and Qiong Hua Jin. "Synthesis of Spiropyran Photochromic Polymer." Advanced Materials Research 380 (November 2011): 64–68. http://dx.doi.org/10.4028/www.scientific.net/amr.380.64.

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Photochromic spiropyran material is of the most extensive and in-depth category. Small molecule spiropyran ring by UV irradiation, the color is less stable body, which restricts the widespread use of these compounds. In this paper, the introduction of spiropyran compounds with substituents on the group method of open-loop stability, which will contain active groups spiropyran monomers in the polymer side chain connected to a rigid polymer to limit the use of spiropyran ring merocyanine body rotation, so that the body color is more stable. This selection and design of the process is simple with

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Sawada, Tsuyoshi, Yukari Akazawa, Yu Narazaki, Shingo Kubo, and Kazuaki Nanamura. "Synthesis and photochromic circular dichroism of 2,7-di-tert-butyl-10b,10c-dimethyl-pyrazino[2,3-e]dihydropyrene." Canadian Journal of Chemistry 93, no. 12 (2015): 1321–25. http://dx.doi.org/10.1139/cjc-2014-0602.

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2,7-Di-tert-butyl-10b,10c-dimethyl-pyrazino[2,3-e]dihydropyrene was prepared and its photochromic properties were studied. The open form of the molecule was separated into its constituent enantiomers by chiral HPLC. The absolute structures of the enantiomers were determined by using spectra predicted with time-dependent density functional theory. Photoswitchable circular dichroism properties of 2,7-di-tert-butyl-10b,10c-dimethyl-pyrazino[2,3-e]dihydropyrene were observed, suggesting its potential for application in molecular devices.

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Shishido, H., M. Yamada, A. Suzuki, and S. Maruta. "2P200 Photoregulation of Calmodulin activity by incorporated photochromic molecule." Seibutsu Butsuri 45, supplement (2005): S169. http://dx.doi.org/10.2142/biophys.45.s169_4.

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Itaba, Takeshi, Masahumi D. Yamada, and Shinsaku Maruta. "Photo-regulation of Kinesin ATPase Activity using Photochromic Molecule." Biophysical Journal 96, no. 3 (2009): 134a. http://dx.doi.org/10.1016/j.bpj.2008.12.610.

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Yang, Tian-She, Chun-Yan Xu, Yuan-Ming Tu, and Shou-Zhi Pu. "3,3,4,4,5,5-Hexafluoro-1,2-bis[5-(3-methoxyphenyl)-3-methyl-2-thienyl]cyclopent-1-ene." Acta Crystallographica Section E Structure Reports Online 62, no. 7 (2006): o2617—o2619. http://dx.doi.org/10.1107/s1600536806020812.

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The title compound, C29H28F6O2S2, a new symmetrical photochromic dithienylethene with 3-methoxyphenyl substituents, may have applications in optoelectronic devices. In the crystal structure, the molecule adopts a photo-active antiparallel conformation. The distance between the two reactive thiophene ring C atoms is 3.490 (5) Å.

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Liu, Gang, Chun-Yan Xu, Shou-Zhi Pu, and Jing-Kun Xu. "1,2-Bis[5-(2,4-difluorophenyl)-2-methyl-3-thienyl]-3,3,4,4,5,5-hexafluorocyclopent-1-ene: a new photochromic diarylethene compound." Acta Crystallographica Section E Structure Reports Online 62, no. 7 (2006): o3028—o3030. http://dx.doi.org/10.1107/s160053680602318x.

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The title compound, C27H14F10S2, is a new symmetrical photochromic diarylethene derivative which can be used potentially for optical recording media and other optoelectronic device materials. There are two independent molecules in the asymmetric unit. Both adopt a photoactive antiparallel conformation. The distances between the reactive C atoms in the two molecules are 3.664 (7) and 3.621 (7) Å. For one molecule, the dihedral angles between the central cyclopentene ring and the thiophene rings are 46.4 (9) and 51.9 (9)°, and those between the thiophene rings and the adjacent benzene rings are

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Grogan, Catherine, George Amarandei, Shauna Lawless, et al. "Silicon Microcantilever Sensors to Detect the Reversible Conformational Change of a Molecular Switch, Spiropyan." Sensors 20, no. 3 (2020): 854. http://dx.doi.org/10.3390/s20030854.

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The high sensitivity of silicon microcantilever sensors has expanded their use in areas ranging from gas sensing to bio-medical applications. Photochromic molecules also represent promising candidates for a large variety of sensing applications. In this work, the operating principles of these two sensing methods are combined in order to detect the reversible conformational change of a molecular switch, spiropyran. Thus, arrays of silicon microcantilever sensors were functionalized with spiropyran on the gold covered side and used as test microcantilevers. The microcantilever deflection respons

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Liu, Jian-Jun, Li-Zhi Li, Chun-Ping Chen, Jin-Zhong Wei, and Fei-Xiang Cheng. "A fourfold interpenetrating cadmium(II) metal–organic framework based on 2,4,6-tris(pyridin-4-yl)-1,3,5-triazine with reversible photochromic properties." Acta Crystallographica Section C Structural Chemistry 75, no. 3 (2019): 372–77. http://dx.doi.org/10.1107/s2053229619002663.

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2,4,6-Tris(pyridin-4-yl)-1,3,5-triazine (tpt), as an organic molecule with an electron-deficient nature, has attracted considerable interest because of its photoinduced electron transfer from neutral organic molecules to form stable anionic radicals. This makes it an excellent candidate as an organic linker in the construction of photochromic complexes. Such a photochromic three-dimensional (3D) metal–organic framework (MOF) has been prepared using this ligand. Crystallization of tpt with Cd(NO3)2·4H2O in an N,N-dimethylacetamide–methanol mixed-solvent system under solvothermal conditions affo

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