Synthesizes and Properties Research of a Photochromic Diarylethene Bearing a Hexatomic Ring

2013 ◽  
Vol 830 ◽  
pp. 278-281
Author(s):  
Zhi Yuan Sun ◽  
Wei Wei Geng ◽  
Shou Zhi Pu
Keyword(s):  
Reaction Kinetics ◽  
Fluorescence Intensity ◽  
Uv Light ◽  
Order Reaction ◽  
First Order Reaction ◽  
First Order ◽  
Solid Films ◽  
Kinetics Of

A new photochromic diarylethene compound 1-(2-cyan-3-phenyl)-2-[5-(4-cyanobenzene) -2-methyl-3-thienyl] perfluorocyclopentene was synthesized. And their properties inculding photochromis, fluorescence in both hexane and solid films, reaction kinetics of cyclization and cycloreversion were studied. And its absorption maxima were observed at 539 nm in hexane and at 552 nm in PMMA films, respectively, upon irradiation with 313 nm UV light. The fluorescence intensity of diarylethene decreased upon irradiation with 313 nm UV light. Besides, the cyclization and cycloreversion processes of the compound were determined to be the zeroth and first order reaction by UV-Vis spectra, respectively.

Synethesis and Properties of 1-(2-trifluoromethylphenyl)-2-[2-methyl-5-(3-N,N-dimethylphenyl)-3-thienyperfluorocyclopentene

2013 ◽  
Vol 473 ◽  
pp. 77-80
Author(s):  
Zhi Yuan Sun ◽  
Dan Dan Xue ◽  
Shou Zhi Pu
Keyword(s):  
Reaction Kinetics ◽  
Fluorescence Intensity ◽  
Uv Light ◽  
Order Reaction ◽  
First Order Reaction ◽  
Fluorescent Properties ◽  
First Order ◽  
Kinetics Of

An unsymmetrical photochromic diarylethene 1-(2-trifluoromethylphenyl)-2-[2-methyl-5-(3-N,N-dimethylphenyl)-3-thienyperfluorocyclopentene (1a) was synthesized and its photochromism, fluorescent properties and reaction kinetics of cyclization and cycloreversion were studied in detail. The compound exhibited remarkable photochromism and its absorption maxima were observed at 552 nm in hexane and at 569 nm in PMMA films upon irradiation with 297 nm UV light. The fluorescence intensity of diarylethene decreased upon irradiation with 297 nm UV light. In addiation, reaction kinetics of the cyclization and cycloreversion processes of the compound were determined to be the zeroth and first order reaction by UV-Vis spectra, respectively.

Synthesizes and Properties Research of a Photochromic Diarylethene Bearing a Ethynyl Moiety

2014 ◽  
Vol 952 ◽  
pp. 79-83
Author(s):  
Feng Xia Sun ◽  
Shi Qiang Cui ◽  
Shou Zhi Pu
Keyword(s):  
Reaction Kinetics ◽  
Uv Light ◽  
Amorphous Film ◽  
Order Reaction ◽  
First Order Reaction ◽  
Fluorescence Properties ◽  
Zeroth Order ◽  
First Order ◽  
Photochromic Reaction

A new unsymmetrical photochromic diarylethene compound, 1-(2-Methyl-3-benzothiophene)-2-(5-(4-ethynyl)-2-methylthiophen-3-yl)Perfluorocyclopentene (1o),was synthesized and its photochemical, fluorescence properties were investigated systematically both in solution and PMMA amorphous film. The results showed that this compound exhibited reversible photochromism, changing from colorless to pink after irradiation with 297 nm UV light both in solution and in PMMA amorphous film. The photochromic reaction kinetics indicated that the cyclization processes of 1 belong to the zeroth order reaction and the cycloreversion process belong to the first order reaction.

Synthesis and Photochromism Studies of 1-(2-methyl-3-benzothiophene)-2-[2-methyl-5-(4-aminomethanephenyl)-3-thienyl]perfluorocyclopentene

2014 ◽  
Vol 886 ◽  
pp. 143-146
Author(s):  
Xiao Rong Dong ◽  
Sha Sha Wei ◽  
Gang Liu ◽  
Shou Zhi Pu
Keyword(s):  
Reaction Kinetics ◽  
Uv Light ◽  
Order Reaction ◽  
First Order Reaction ◽  
Acetonitrile Solution ◽  
Zeroth Order ◽  
Photochromic Properties ◽  
First Order ◽  
Fluorescence Switching ◽  
Photochromic Reaction

A new unsymmetrical photochromic diarylethene compound, 1-(2-methyl-3-benzothiophene)-2-[2-methyl-5-(4-aminomethanephenyl)-3-thienyperfluorocyclopentene (1a) was synthesized, its photochromic properties were examined, the result indicated that the Diarylethene 1a changed the color from colorless to purple upon irradiation with 297 nm UV light, in which absorption maxima were observed at 564 in acetonitrile. The photochromic reaction kinetics indicated that the cyclization processes of 1a belong to the zeroth order reaction and the cycloreversion process belong to the first order reaction. This new photochromic system also exhibited fluorescence switching in acetonitrile solution.

Efficient Synthesis, Photochromism and Fluorescence Properties of a Novel Diarylethene Bearing a Fluorene

2014 ◽  
Vol 1003 ◽  
pp. 51-54
Author(s):  
Shui Jun Xia ◽  
Xiao Rong Dong ◽  
Gang Liu
Keyword(s):  
Reaction Kinetics ◽  
Fluorescence Intensity ◽  
Order Reaction ◽  
First Order Reaction ◽  
Efficient Synthesis ◽  
Zeroth Order ◽  
Strong Fluorescence ◽  
First Order ◽  
Closed Ring ◽  
Photochromic Reaction

A new symmetrical photochromic diarylethene, 1,2-bis-[2-methyl-5-(9,9-dibutyl-9H-fluorene) -3-thienyl] perfluorocyclopentene (1a), was synthesized and its optoelectronic properties, such as photochromism in solution and fluorescence were investigated. The photochromic reaction kinetics indicated that the cyclization processes of 1a belong to the zeroth order reaction and the cycloreversion process belong to the first order reaction. The new diarylethene also exhibited relatively strong fluorescence by photoirradiation in solution and the fluorescence intensity decreased along with the photochromism upon irradiation 297 nm light and its closed-ring isomer showed almost no fluorescence.

Synthesis, Photochromism and Optical Storage of a Novel Unsymmetrical Diarylethene Compound

2010 ◽  
Vol 156-157 ◽  
pp. 665-669
Author(s):  
Tao Feng Wang ◽  
Zhi Gang Liu ◽  
Shou Zhi Pu ◽  
Gang Liu
Keyword(s):  
Fluorescence Intensity ◽  
Uv Light ◽  
Optical Storage ◽  
Order Reaction ◽  
First Order Reaction ◽  
Pmma Film ◽  
First Order

A new unsymmetrical photochromic diarylethene 1-[2,5-dimethyl-3-thienyl]-2-[3,5-difluorophenyl]perfluoroyclopentene (1a) was synthesized, its photochromic, fluorescent and optical strorage properties were examined, the result indicated that the diarylethene 1a changed the color from colorless to purple upon irradiation with 313 nm UV light, in which absorption maxima were observed at 542nm and 556nm in hexane and PMMA film, respectively. This new photochromic system exhibited remarkable fluorescence intensity and clear fluorescent switches by photoirradiation in PMMA film. The results showed that the cyclization/cycloreversion process of the compound was determined to be the zeroth/first order reaction. This new photochromic system also exhibited remarkable optical storage character.

Synthesis and Application of 1-[2-methyl-3-benzofuran]-2-[2-methyl-5-(4-pentylphenyl)-3-thienyl]perfluorocyclopentene

2014 ◽  
Vol 707 ◽  
pp. 52-55
Author(s):  
Ya Ming Xue ◽  
Ren Jie Wang ◽  
Shou Zhi Pu
Keyword(s):  
Reaction Kinetics ◽  
Uv Light ◽  
Order Reaction ◽  
First Order Reaction ◽  
First Order ◽  
Photochromic Reaction

An unsymmetrical photochromic diarylethene1o, which is named 1-[2-methyl-3-benzofuran]-2-[2-methyl-5-(4-pentylphenyl)-3-thienyl] perfluorocyclopentene, has been synthesized, and its properties including photochromism and fluorescence have been investigated. The compound exhibited remarkable photochromism, changing from colorless to light pink after irradiation with 297 nm UV light. The photochromic reaction kinetics was studied in solution and their cyclization/cycloreversion processes belong to zeroth/first order reaction in acetonitrile.

Photochromism and Optical Storage of a Novel Unsymmetrical Diarylethene Based on Pyrazole and Benzofuran

2011 ◽  
Vol 295-297 ◽  
pp. 220-223
Author(s):  
Tao Feng Wang ◽  
Gang Liu ◽  
Shi Qiang Cui
Keyword(s):  
Fluorescence Intensity ◽  
Uv Light ◽  
Optical Storage ◽  
Order Reaction ◽  
First Order Reaction ◽  
Pmma Film ◽  
First Order

A new unsymmetrical photochromic diarylethene of bis (1,3,5-trimethyl-4-pyrazole)ethane and bis(2-methyl-3-benzofuran)ethane was synthesized, its photochromic, fluorescent and optical strorage properties were examined, the result indicated that the diarylethene 1a changed the color from colorless to violet upon irradiation with 297 nm UV light, in which new absorption maxima were observed at 539nm and 556nm in hexane and PMMA film, respectively. This new photochromic system exhibited remarkable fluorescence intensity and clear fluorescent switches by photoirradiation in hexane. The results showed that the cyclization/cycloreversion process of the compound was determined to be the zeroth/first order reaction. This new photochromic system also exhibited remarkable optical storage character.

Synthesis a New Function Materials and Photochromic Properties of Diarylethene Bearing a Naphthalene and Isoxazole Moiety

2012 ◽  
Vol 164 ◽  
pp. 243-246
Author(s):  
Ren Jie Wang ◽  
Shi Qiang Cui ◽  
Shou Zhi Pu
Keyword(s):  
Fluorescence Intensity ◽  
Uv Light ◽  
Order Reaction ◽  
First Order Reaction ◽  
Fluorescent Properties ◽  
Photochromic Properties ◽  
First Order ◽  
Closed Ring ◽  
Hexane Solution

A new photochromic diarylethene compound 1-(2-methylnaphthyl)-2-(3, 5-dimethyl-4-isoxazolyl)perfluorocyclopentene (1o), was synthesized and its photochromic and fluorescent properties were investigated. Diarylethene 1o changed the color from colorless to yellow upon irraditation with 297 nm UV light, which the absorption maxima were observed at 446 nm in hexane solution. The kinetic experiments indicated that the cyclization/cycloreversion process of the compound was determined to be the zeroth/first order reaction in hexane solution. The fluorescence intensity decreased along with the photochromism upon irradiation with 297 nm light and its closed-ring isomer showed weak fluorescence

scholarly journals Kinetika Fotodegradasi Remazol Yellow Menggunakan Zeolit A Terimpregnasi TiO2

Jurnal MIPA ◽  
2015 ◽  
Vol 4 (2) ◽  
pp. 10
Author(s):  
Suhardi Titdoy ◽  
Audy D. Wuntu ◽  
Vanda S. Kamu
Keyword(s):  
Reaction Kinetics ◽  
Rate Constant ◽  
Uv Light ◽  
Weight Ratio ◽  
Order Reaction ◽  
Zeolite A ◽  
First Order ◽  
Yellow Solution ◽  
Type Zeolite ◽  
Kinetics Of

Telah dilakukan penelitian tentang kinetika fotodegradasi remazol yellow dengan menggunakan zeolit A terimpregnasi TiO2. Jumlah TiO2 divariasikan dalam perbandingan berat zeolit A : TiO2 sebesar 1:0.4, 1:0.6, 1:0.8, 1:1, 1:1.2, dan 1:1,4 g/g. Eksperimen kinetika dilakukan melalui penentuan konsentrasi remazol yellow yang tersisa setelah interaksi zeolit A : TiO2 dengan larutan remazol yellow yang disinari UV pada waktu 10, 20, 30, 40, 50, 60, dan 90 menit. Selanjutnya data dianalisis mengikuti model kinetika reaksi orde-1. Hasil penelitian menunjukan bahwa semakin tinggi jumlah TiO2 dalam material  zeolit A : TiO2 maka semakin kecil laju fotodegradasi. Perbandingan berat 1:0,4 menghasilkan laju fotodegradasi paling besar dengan konstanta laju sebesar 0,0184 menit-1.A research on photodegradation kinetics of remazol yellow using TiO2-impregnated A-type zeolite has been done. The amount of TiO2 was varied in weight ratio of zeolite A : TiO2 which were 1:0.4, 1:0.6, 1:0.8, 1:1, 1:1.2, and 1:1.4 g/g. Kinetics experiment was performed by determining the concentration of remazol yellow remained after the interaction of zeolite A : TiO2 with remazol yellow solution that is illuminated by UV-light at 10, 20, 30, 40, 50, 60 and 90 minutes. Data obtained was analyzed using first-order reaction kinetics model. The results showed that the higher the amount of TiO2 in the mixture of zeolite A : TiO2 material, the smaller the rate of photodegradation. The weight ratio of 1:0.4 produced the greatest rate of photodegradation with rate constant of 0.0184 min­­­­-1.

Materials with Synthesis and Properties of Photochromic Diarylethene

2013 ◽  
Vol 473 ◽  
pp. 89-92
Author(s):  
Ya Ming Xue ◽  
Feng Xia Sun ◽  
Shou Zhi Pu
Keyword(s):  
Reaction Kinetics ◽  
Uv Light ◽  
Order Reaction ◽  
First Order Reaction ◽  
Amorphous Films ◽  
First Order ◽  
Photochromic Reaction

An unsymmetrical photochromic diarylethene was synthesized and its photochromism properties were investigated in detail. The compound exhibited remarkable photochromism, changing from colorless to light pink after irradiation with 297 nm UV light, in which absorption maxima were observed at 498 nm in hexane and at 505 nm in PMMA amorphous films, respectively. The photochromic reaction kinetics was studied in solution and their cyclization/cycloreversion processes belong to zeroth/first order reaction in hexane.

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