Inside Cover: Construction of Highly Emissive Pt(II) Metallacycles upon Irradiation (Chin. J. Chem. 4/2019)
Yi QinYing ZhangGuang‐Qiang YinYuxuan WangChangwei ZhangLi‐Jun ChenHongwei TanXiaopeng LiLin XuHai‐Bo Yang
0
Citation
0
Reference
10
Related Paper
Abstract:
The inside cover picture shows in situ construction of highly emissive Pt(II) metallacycles upon irradiation. The self‐assembled diarylethene‐containing metallacycles can realize supramolecular transform from the open‐ring isomers to their closed‐ring ones under UV irradiation. Moreover, the closed‐ring isomers featured a relatively high fluorescence quantum yield. This property of “turn‐on” fluorescence switching provides a new method to construct highly emissive supramolecular fluorescent materials by light stimulus. More details are discussed in the article by Yang et al. on page 323–329. imageKeywords:
Diarylethene
Quantum yield
A symmetrical diarylethene bearing two differerent substituents was synthesized successfully, its photochromic properties in solution and PMMA film were investigated in detail, respectively. In addition, the diarylethene as rewritable optical recording media was also performed successfully.
Diarylethene
Optical recording
Optical storage
Cite
Citations (0)
A novel photochromic diarylethene was synthesized and its photochromism, fluorescence properties have been investigated. This compound exhibited good photochromism and functioned as a fluorescence switch upon alternating irradiation with UV and visible light both in solution and in PMMA film. When diarylethene was used as recording medium, the results demonstrated that the diarylethene compound had attractive properties for high density optical storage.
Diarylethene
Optical storage
Optical recording
Visible spectrum
Cite
Citations (0)
A new fluorescent photochromic diarylethene that can be activated by irradiation with 405 nm light was synthesized. The turn-on mode switching of fluorescence with visible light is favorable for application to biological systems. The fluorescence quantum yield of the photogenerated closed-ring isomer was as high as 0.8 in less or medium polar solvents, and even in polar acetonitrile the yield was higher than 0.6.
Diarylethene
Quantum yield
Visible spectrum
Cite
Citations (49)
Benzothiophene
Diarylethene
Quantum yield
Sulfone
Cite
Citations (134)
A new photochromic diarylethene bearing five and six-membered moieties 1-(2, 5-dimethyl-3-thienyl)-2-(2-methylphenyl)perfluorocyclopentene has been synthesized. The compound underwent reversible cyclization and cycloreversion reactions, changing from colorless to red upon alternating irradiation with UV and visible light both in solution and in PMMA film. The diarylethene 1o also showed good fluorescent switching both in solution and in PMMA film. At last, optical recording using diarylethene 1c as recording medium was carried out successfully.
Diarylethene
Visible spectrum
Optical recording
Optical storage
Cite
Citations (0)
Synthesis, Properties and Application in Optical Memory of a New Type Diarylethene with Benzene Ring
A new type photochromic diarylethene, 1-(2-ethylbenzo[b]thiophen-3-yl)-2- (2-methylphenyl)perfluorocyclopentene (1o), was synthesized, and its photochromic and fluorescent properties were investigated. This compound exhibited reversible photochromism and notable fluorescence photoswitches both in solution and in PMMA films. In addition, the fluorescence spectra of diarylethene 1o evidently depended on the concentration in hexane. Using diarylethene 1c/PMMA film as recording medium, optical recording was carried out successfully.
Diarylethene
Hexane
Cite
Citations (0)
A novel photochromic diarylethene bearing five and six-membered aryl units 1-[(2-methyl-5-(3-pyridinyl)-4-thienyl)]-2-[(2-methoxylphenyl)]perfluorocyclopentene was synthesized and its photochromic, fluorescent electrochemical propertieswere investigated in detail. using diarylethene (1a) as recording medium, polarization holographic optical recording was carried out successfully.
Diarylethene
Optical recording
Cite
Citations (2)
The reversible molecule switching of an assymmetrical photochromic diarylethene 1-(2-methyl-5-phenyl-3-thienyl-2-[2-methy1-5-(4-ethoxylpheny1) -3-thieny1]perfluorocyelopentene (MPTMEPTF6) has been prepared for the examination of photo-switching, fluorescence switching. The photochromism properties of MPTMEPTF6 diarylethene show good photochromism in hexane and in PMMA amorphous film. Steady state fluorescence studies indicated that MPTMEPTF6 diarylethene is higher fluorescent in the open-ring isomer, but there almost no fluorescence in the closed-ring isomer in PMMA amorphous film. The diarylethene MPTMEPTF6 has promising application for photo-switching, fluorescence-switching which can use for data storage.
Diarylethene
Molecular switch
Hexane
Optical storage
Cite
Citations (0)
A new unsymmetrical diarylethene derivative 1-(2-methylphenyl)-2-(2-methyl-5-methylenehydroxyl-3-thienyl)perfluorocyclopentene(1a) was successfully synthesized. The properties of the compound, including photochromic and fluorescence properties of the diarylethene were also investigated. Diarylethene 1a changed the color from colorless to red upon irradiation with 297 nm UV light, in which absorption maxima were observed at 519 nm in hexane and at 535 nm in PMMA film, respectively. In hexane solution, the open-ring isomer of the diarylethene 1 exhibited relatively fluorescence at 437 nm when excited at 411 nm.
Diarylethene
Hexane
Derivative (finance)
Cite
Citations (0)
A new unsymmetrical photochromic diarylethene 1-(2-methylnaphthyl)-2-(2-n-butyl-5-formyl-3-thienyl) perfluorocyclopentene (1o), was synthesized and its optoelectronic properties, such as photochromism in solution as well as in poly-methylmethacrylate (PMMA) amorphous films, and the fluorescence spectra of diarylethene 1o were investigated. The diarylethene can be potentially used as holographic optical recording medium
Diarylethene
Cite
Citations (1)