Photoinduced refractive index change of a photochromic diarylethene polymer

被引:144
作者
Kim, E
Choi, YK
Lee, MH
机构
[1] Korea Res Inst Chem Technol, Adv Mat Div, Taejon 305600, South Korea
[2] ETRI, Photon Switching Sect, Taejon 305350, South Korea
关键词
D O I
10.1021/ma9903409
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The effect of photoirradiation on the refractive index of a diarylethene polymer was investigated. Diarylethene polymer was prepared by a radical polymerization using 1-[6'-(methacryoyloxyethyloxycarbonyl) -2'-methylbenzo[b]thiophen-3'-yl]-2-(2 "-methylbenzo[b]thiophen-3 "-yl) hexafluorocyclopentene (BTF6MA), styrene, and butyl methacrylate. A colorless film prepared from the diarylethene polymer turned a deep red hue upon exposure to UV light. The red color was immediately bleached by visible light, and such coloration and bleaching of the polymer film could be switched reversibly by using two light source of UV and visible light. The refractive index (n(TE)) of the polymer film, with 5.3 mol % of BTF6MA, was determined as 1.5555 and 1.5459 by a prism coupler using TE polarized light of 633 and 830 nm, respectively. Upon irradiation with light of 365 nm, the refractive index was increased, resulting in a photoinduced refractive index change (Delta n(TE)) of 8 x 10(-4) as monitored by Light of 830 nm. Delta n(TE) was dependent on the wavelength of the monitoring light. The dispersion of light in the diarylethene polymer film could be simulated by the Sellmeier equation, n(lambda)(2) = n(infinity)(2) + D lambda(0)(2)/(lambda(2) - lambda(0)(2)), in which the refractive index at longest wavelength limit (n(infinity)) and the oscillator strength (D) for the colorless polymer film were determined as 1.5356 and 0.18, respectively. Similarly, n(infinity) and D values for the red polymer film, prepared by UV irradiation, were determined as 1.5368 and 0.042, respectively.
引用
收藏
页码:4855 / 4860
页数:6
相关论文
共 20 条
  • [1] Large and stable refractive index change in photochromic hybrid materials
    Biteau, J
    Chaput, F
    Lahlil, K
    Boilot, JP
    Tsivgoulis, GM
    Lehn, JM
    Darracq, B
    Marois, C
    Levy, Y
    [J]. CHEMISTRY OF MATERIALS, 1998, 10 (07) : 1945 - 1950
  • [2] BULAND DM, 1994, CHEM REV, V94, P31
  • [3] A TEMPERATURE-DEPENDENT DISPERSION-EQUATION FOR CONGRUENTLY GROWN LITHIUM-NIOBATE
    EDWARDS, GJ
    LAWRENCE, M
    [J]. OPTICAL AND QUANTUM ELECTRONICS, 1984, 16 (04) : 373 - 375
  • [4] THERMALLY IRREVERSIBLE PHOTOCHROMIC SYSTEMS - REVERSIBLE PHOTOCYCLIZATION OF 1,2-BIS(2-METHYLBENZO[B]THIOPHEN-3-YL)PERFLUOROCYCLOALKENE DERIVATIVES
    HANAZAWA, M
    SUMIYA, R
    HORIKAWA, Y
    IRIE, M
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1992, (03) : 206 - 207
  • [5] Optoelectronic properties of sexithiophene single crystals
    Horowitz, G
    Romdhane, S
    Bouchriha, H
    Delannoy, P
    Monge, JL
    Kouki, F
    Valat, P
    [J]. SYNTHETIC METALS, 1997, 90 (03) : 187 - 192
  • [6] Refractive index change in photochromic diarylethene derivatives and its application to optical switching devices
    Hoshino, M
    Ebisawa, F
    Yoshida, T
    Sukegawa, K
    [J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1997, 105 (01) : 75 - 81
  • [7] Photochromism of dithienylethenes with electron-donating substituents
    Irie, M
    Sakemura, K
    Okinaka, M
    Uchida, K
    [J]. JOURNAL OF ORGANIC CHEMISTRY, 1995, 60 (25) : 8305 - 8309
  • [8] Synthesis and properties of photochromic diarylethenes with heterocyclic aryl groups
    Irie, M
    Uchida, K
    [J]. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1998, 71 (05) : 985 - 996
  • [9] Kim JW, 1997, POLYM-KOREA, V21, P512
  • [10] Medhat M, 1997, J MOD OPTIC, V44, P461, DOI 10.1080/09500349708232914