화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.11, No.6, 431-436, December, 2003
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Synthesis and Characterization of a New Photoconducting Poly(siloxane) Having Pendant Diphenylhydrazone for Photorefractive Applications
Sang Ho Lee, Woong Sang Jahng, Ki Hong Park†, Nakjoong Kim1, Won-Jae Joo1, and Dong Hoon Choi2
  • Optoelectronic Materials Research Center, Korea Institute of Science and Technology, P. O. BOX 131,Cheongryang, Seoul 136-791, Korea
  • 1Department of Chemistry, Hanyang University, Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea
  • 2College of Environment & Applied Chemistry, Kyunghee University, Younginn, Kyungki-do 449-701, Korea
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A new photoconducting polymer, diphenyl hydrazone-substituted polysiloxane, was successfully synthesized by the hydrosilylation method and characterized by FT-IR, 1H-NMR, and 29Si-NMR spectroscopy. The glass transition temperature (Tg) of the polysiloxane having pendant diphenyl hydrazone was ca. 62 ℃, which enabled a component of a low-Tg photorefractive material to be prepared without the addition of any plasticizers. This polysiloxane, with 1 wt% of C60 dopant, showed a high photoconductivity (2.8 × 10-12 S/cm at 70 V/μm) at 633 nm, which is necessary for fast build-up of the space-charge field. A photorefractive composite was prepared by adding a nonlinear optical chromophore, 2-{3-[2-(dibutylamino)-1-ethenyl]-5,5-dimethyl-2-cyclohexenylidene} malononitrile, into the photoconducting polysiloxane together with C60. This composite shows a large orientation birefringence (Δn = 2.6 × 10-3 at 50 V/μm) and a high diffraction efficiency of 81% at an electric field of 40 V/μm.
Keywords:photorefractive;diphenyl hydrazone;polysiloxane;photoconducting;hydrosilylation.
  1. Ashkin A, Boyd GD, Dziedzic JM, Smith RG, Ballman AA, Nassau LK, J. Appl. Phys., 38, 3418 (1967) 
  2. Moerner WE, Silence SM, Chem. Rev., 94(1), 127 (1994) 
  3. Hendrickx E, Herlocker J, Maldonaldo JL, Marder SR, Kippelen B, Persoons A, Peyghambarian N, Appl. Phys. Lett., 72, 1679 (1998) 
  4. Meerholz K, Volodin BL, Sandalphon, Kippelen B, Peyghambarian N, Nature, 371(6497), 497 (1994) 
  5. Schloter S, Hofmann U, Strohriegl P, Schmidt HW, Haarer DJ, J. Opt. Soc. Am. B, 15, 2473 (1998)
  6. Hendrickx E, Herlocker J, Maldonaldo JL, Marder SR, Kippelen B, Persoons A, Peyghambarian N, Appl. Phys. Lett., 72, 1679 (1998) 
  7. Herlocker Ja, Ferrio KB, Hendrickx E, Guenther BD, Mery S, Kippelen B, Peyghambarian N, Appl. Phys. Lett., 74, 2253 (1999) 
  8. Diaz-Garcia MA, Wright D, Casperson D, Smith B, Glazer E, Moerner WE, Sukhomlinova LI, Twieg RJ, Chem. Mater., 11, 1784 (1999) 
  9. Kim NJ, Chun H, Moon IK, Joo WJ, Kim N, Bull. Korean Chem. Soc., 23, 571 (2002)
  10. Grunnet-Jespen A, Thompson CL, Twieg RJ, Moerner WE, Appl. Phys. Lett., 70, 12 (1997)
  11. Sasaki T, Goto M, Ishikawa Y, Yoshimi T, J. Phys. Chem. B, 103(11), 1925 (1999) 
  12. Schein LB, Rosenberg A, Rice SL, J. Appl. Phys., 60, 4287 (1986) 
  13. Liphardt M, Goonesekera A, Jones BE, Ducharme S, Takacs JM, Zhang L, Science, 263(5145), 367 (1994) 
  14. Bittner R, Daubler TK, Neher D, Meerholz K, Adv. Mater., 11, 123 (1999) 
  15. Chun H, Moon IK, Shin DH, Kim N, Chem. Mater., 13, 2813 (2001) 
  16. Patai S, Rappoport Z, The Chemistry of Organic Silicon Compounds, Wiley, New York, Part 2, pp. 1479 (1989)
  17. Diehl P, Fluck E, Kosfeld R, NMR-17 Oxygen-17 and Silicon-29, Springer-Verlag Berlin Heidelberg, New York, pp. 97-108 (1981)
  18. Moerner WE, Silence SM, Chem. Rev., 94(1), 127 (1994) 
  19. Chun H, Kim NJ, Joo WJ, Han JW, Oh CH, Kim N, Synth. Met., 129, 281 (2002) 
  20. Ogino K, Park SH, Sato H, Appl. Phys. Lett., 74, 3936 (1999) 
  21. Chun H, Moon IK, Shin DH, Song S, Kim N, J. Mater. Chem., 12, 858 (2002)