Synthesis and Properties of a New Unsymmetrical Diarylethene Bearing Benzothiophene and Thiophene Rings

2013 ◽  
Vol 788 ◽  
pp. 194-197
Author(s):  
Shu Hong Jing ◽  
Shou Zhi Pu ◽  
Cong Bin Fan
Keyword(s):  
Fluorescence Spectrum ◽  
Concentration Dependence ◽  
Pmma Film ◽  
Isomeric Compound ◽  
Photostationary State ◽  
Fluorescence Switch

A new unsymmetrical isomeric diarylethene was synthesized, namely1-[2-methyl-(5-(4-hydroxyl) phenyl) -3-thieny-2-(2-methyl-3-benzothiophene) perfluorocyclopentene (1o). Its photochromic reactivity both in solution and in PMMA film, photoconversion ratio at photostationary state, and fluorescence were investigated in detail. The compound displayed excellent photochromism both in solution and in PMMA film. The isomeric compound also functioned as a fluorescence switch and concentration dependence on the fluorescence spectrum in hexane.

Synthesis, Photochromism and Fluorescence of a Novel Diarylethene Having Thiazole Unit

2012 ◽  
Vol 455-456 ◽  
pp. 17-20
Author(s):  
Hui Li ◽  
Shou Zhi Pu ◽  
Shi Qiang Cui
Keyword(s):  
Fluorescence Spectrum ◽  
Concentration Dependence ◽  
Pmma Film ◽  
Isomeric Compound ◽  
Photostationary State ◽  
Fluorescence Switch

A new unsymmetrical isomeric diarylethene was synthesized, namely 1-(2,4-dimethyl-5-thiazolyl)-2-[2-methyl-5- (3-methoxyphenyl)-3-thienyl] perfluorocyclopentene (1o). Its photochromic reactivity both in solution and in PMMA film, photoconversion ratio at photostationary state, and fluorescence were investigated in detail. The compound displayed excellent photochromism both in solution and in PMMA film. The isomeric compound also functioned as a fluorescence switch and concentration dependence on the fluorescence spectrum in hexane.

Synthesis, Properties and Application in Optical Recording of a New Diarylethene Bearing an Isoxazole Unit

2011 ◽  
Vol 393-395 ◽  
pp. 389-392
Author(s):  
Hui Li ◽  
Shou Zhi Pu ◽  
Wei Jun Liu
Keyword(s):  
Visible Light ◽  
Optical Storage ◽  
Optical Recording ◽  
Pmma Film ◽  
Isomeric Compound ◽  
Photostationary State ◽  
Fluorescence Switch ◽  
Synthesis Properties ◽  
Reversible Cyclization

A new photochromic diarylethene bearing an isoxazole unit has been synthesized, namely {1-(3,5-dimethyl-4-isoxazolyl), 2-[2-methyl-5-(3-methoxyphenyl)-3-thienyl]}perfluorocyclopentene. Its properties, including photochromic reactivity both in solution and in PMMA film, photoconversion ratio at photostationary state, fluorescence and optical recording property were investigated. It underwent reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light both in hexane and in PMMA. The isomeric compound also functioned as a fluorescence switch by photoirradiation. Using this dithienylethene as optical storage was performed successfully.

Synthesis and Properties of a New Unsymmetrical Diarylethene Bearing Two Thiophene Rings

2012 ◽  
Vol 490-495 ◽  
pp. 3672-3675
Author(s):  
Hui Li ◽  
Yuan Ming Tu ◽  
Gang Liu
Keyword(s):  
Visible Light ◽  
Fluorescence Intensity ◽  
Fluorescence Property ◽  
Pmma Film ◽  
Isomeric Compound ◽  
Fluorescence Switch ◽  
Reversible Cyclization

A new unsymmetrical photochromic diarylethene has been synthesized, namely {1-(2,5-dimethyl-3-thienyl),2-[2-methyl-5-(4-trifluoromethylphenyl)-3-thienyl]}perfluorocyclopentene. Its properties, including photochromic reactivity in solution and fluorescence property both in solution and in PMMA film were investigated. It underwent reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light. The isomeric compound functioned as a fluorescence switch by photoirradiation both in solution and in PMMA film. The fluorescence intensity also showed regular changes along with the change of concentration.

Photochromism of a New Unsymmetrical Diarylethene Bearing both Thiazole and a Methoxyl Group

2011 ◽  
Vol 295-297 ◽  
pp. 228-231
Author(s):  
Hui Li ◽  
Shou Zhi Pu ◽  
Shi Qiang Cui
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Properties ◽  
Benzene Ring ◽  
Phenyl Ring ◽  
Methoxyl Group ◽  
Pmma Film ◽  
Isomeric Compound ◽  
Fluorescence Switch

A new unsymmetrical isomeric diarylethene bearing an electron-donating methoxyl group atortho-positions of the terminal phenyl ring was synthesized, namely 1-(2,4-dimethyl-5-thiazolyl) -2-[2-methyl-5-(2-methoxyphenyl)-3-thienyl]perfluorocyclopentene (1o). The compound displayed excellent photochromism both in solution and in PMMA film. The isomeric compound also functioned as a fluorescence switch by photoirradiation in solution. In addition, cyclic voltammetry tests showed that the electron-donating methoxyl group at the terminal benzene ring had a significant effect on the electrochemical properties of the isomeric diarylethene.

Photochromism and Optical Recording of a Novel Diarylethene Bearing Phenanthrene Unit

2013 ◽  
Vol 763 ◽  
pp. 79-83 ◽  
Author(s):  
Xue Li ◽  
Cong Bin Fan ◽  
Gang Liu
Keyword(s):  
Uv Light ◽  
Light Stimulus ◽  
Optical Recording ◽  
Color Variation ◽  
Pmma Film ◽  
Fluorescent Properties ◽  
Closed Ring ◽  
Fluorescence Switch ◽  
Open Ring ◽  
Photochromic Molecules

Photochromic molecules are part of a large class of materials in which light stimulus not only induces a color variation but also affects other physicochemical properties. In the paper, an asymmetrical photochromic diarylethene, 1-(2,4-dimethyl-3-thiazole)-2-[2-methyl-5-(10-phenanthrenyl)-3-thienyPerfluorocyclopentene was synthesized and its photochromic and fluorescent properties were systematically investigated. The compound exhibited remarkable photochromic, changing from colorless to OrangeRed after irradiation with UV light both in solution and in PMMA film. In addition, its fluorescence property was also discussed. When irradiation with UV light, the fluorescence intensity declined remarkably. The results showed that the diarylethene exhibited a relatively strong fluorescence switch along with the photochromism from open-ring isomer to closed-ring isomer. Using this diarylethene 1a as optical storage was performed successfully.

Efficient, Synthesis, Photochromism Properties of a Hybrid Diarylethene

2011 ◽  
Vol 197-198 ◽  
pp. 522-525
Author(s):  
Wei Jun Liu ◽  
Shou Zhi Pu ◽  
Duo Hua Jiang ◽  
Pei Jian Yan
Keyword(s):  
Fluorescence Intensity ◽  
Phenyl Ring ◽  
Uv Light ◽  
Pmma Film ◽  
Efficient Synthesis ◽  
Photochromic Properties ◽  
Closed Ring ◽  
Fluorescence Switch ◽  
Open Ring ◽  
Reversible Cyclization

An unsymmetrical diarylethene derivative bearing both phenyl and thiophene moieties, in which a methoxyl group was substituted at the para-positions of the terminal phenyl ring, was synthesized. At the same time, its photochromic properties and fluorescence switch were investigated in detail. The results showed that this compound exhibited reversible photochromism, undergoing reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light both in solution and in PMMA film. The fluorescence intensity of diarylethene decreased dramatically along with the photochromism from open-ring isomer to closed-ring isomer upon irradiation with 297 nm UV light in hexane.

Sythesis of a Novel Unsymmetrical Photochromic Diarylethene Compound Bearing a Six-Membered Aryl Unit

2011 ◽  
Vol 295-297 ◽  
pp. 216-219
Author(s):  
Duo Hua Jiang ◽  
Gang Liu ◽  
Wei Jun Liu ◽  
Shi Qiang Cui
Keyword(s):  
Uv Light ◽  
Amorphous Film ◽  
Pmma Film ◽  
Photochromic Properties ◽  
Strong Fluorescence ◽  
Closed Ring ◽  
Fluorescence Switch ◽  
Open Ring ◽  
Reversible Cyclization ◽  
Hexane Solution

A novel unsymmetrical diarylethene derivative bearing both indole and thiophene moieties, in which a cyanol group was substituted at the meta-positions of the terminal phenyl ring, was synthesized. At the same time, its photochromic properties and fluorescence switch were investigated in detail. The results showed that this compound exhibited reversible photochromism, undergoing reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light both in solution and in PMMA film, and its absorption maxima were observed at 592 nm in hexane and at 607 nm in PMMA amorphous film, respectively, upon irradiation with 297 nm UV light. The fluorescence intensity of diarylethene decreased dramatically along with the photochromism from open-ring isomer to closed-ring isomer upon irradiation with 297 nm UV light in PMMA. In hexane solution, the open-ring isomer of the diarylethene 1 exhibited relatively strong fluorescence at 426 nm when excited at 350 nm.

Efficient Synthesis and Properties of a Photochromic Hybrid Diarylethene Bearing a Pyrimidine Moiety

2014 ◽  
Vol 886 ◽  
pp. 159-163 ◽  
Author(s):  
Xiao Dong Yu ◽  
Hong Liang Liu ◽  
Gang Liu ◽  
Shou Zhi Pu
Keyword(s):  
Vital Role ◽  
Initial Increase ◽  
Pmma Film ◽  
Efficient Synthesis ◽  
Dramatic Decrease ◽  
Fluorescence Switch ◽  
Pyrimidine Moiety

A novel photochromic diarylethene bearing a six-membered pyrimidine as one aryl moiety was synthesized to investigate its photochromic behaviors. The diarylethene exhibited good photochromism and functioned as a fluorescence switch both in hexane and in PMMA film. The fluorescence had a remarkable initial increase with subsequent dramatic decrease with increasing concentration. The results suggested that the pyrimidine moiety played a vital role during the process of photoisomerization reaction for the diarylethene.

Photochromism Material of New Unsymmetrical Isomeric Diarylethenes Bearing a Thiophene and Pyridine Unit

2012 ◽  
Vol 164 ◽  
pp. 239-242
Author(s):  
Ming Liu ◽  
Gang Liu ◽  
Shi Qiang Cui
Keyword(s):  
Optical Storage ◽  
Pmma Film ◽  
Storage Material ◽  
Fluorescent Properties ◽  
Photochromic Behavior ◽  
Fluorescence Switch

A new photochromic diarylethene compound, 1-(2,5-dimethyl-3-thiophene)-2-[5-(4-pyridine)-2-methyl-3-thienyl]perfluorocyclopentene(1a) was synthesized. its photochromic and fluorescent properties have been investigated in detail. The results of the research showed that it has shown good photochromic behavior and fluorescence switch in solution and PMMA film. Finally, photo-mode rewritable optical storage using 1b was performed. The images demonstrated that the compound can be used as optical storage material

Efficient Synthesis, Properties of a Novel Unsymmetrical Photochromic Diarylethene Based on Trifluoromethy Group and Formyl Group

2012 ◽  
Vol 602-604 ◽  
pp. 892-895
Author(s):  
Gang Liu ◽  
Long Liang ◽  
Duo Hua Jiang
Keyword(s):  
Fluorescence Intensity ◽  
Uv Light ◽  
Amorphous Film ◽  
Pmma Film ◽  
Photochromic Properties ◽  
Closed Ring ◽  
Fluorescence Switch ◽  
Open Ring ◽  
Synthesis Properties ◽  
Reversible Cyclization

An unsymmetrical diarylethene derivative was synthesized, and its photochromic properties and fluorescence switch were investigated in detail. The results showed that this compound exhibited reversible photochromism, undergoing reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light both in solution and in PMMA film, and its absorption maxima were observed at 599 nm in hexane and at 609 nm in PMMA amorphous film, respectively, upon irradiation with 297 nm UV light. The fluorescence intensity of diarylethene decreased dramatically along with the photochromism from open-ring isomer to closed-ring isomer upon irradiation with 297 nm light in PMMA. In hexane solution, the open-ring isomer of the diarylethene 1 exhibited relatively strong fluorescence at 419 nm when excited at 309 nm. The fluorescence intensity is highest at the concentration of 5.0×10-5 mol/L when excited at 309 nm.

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