화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.17, No.2, 91-98, February, 2009
Export Citation
Synthesis and Characterization of Organic Light-Emitting Copolymers Containing Naphthalene
Jung-Sik Kim, Jun Heo, Pengtao Kang, Jin Hak Kim, Sung Ouk Jung, Soon-Ki Kwon†, Un-Kyung Kim1, and Yun-Hi Kim1, †
  • School of Materials Science and Engineering and ERI, Gyeongsang National University, Jinju 660-701, Korea
  • 1Department of Chemistry and RINS, Gyeongsang National University, Jinju 660-701, Korea
E-mail:,
Conjugated PPV-derived block copolymers containing 2-ethylhexyloxynaphthalene unit were synthesized and characterized in this study. The resulting polymers were soluble in common organic solvents and showed good thermal stabilities. The weight-average molecular weights (Mw) of the copolymers ranged from 246,000 to 475,000 with PDIs of 1.3~2.1. The optical properties of these polymers, measured both in a chloroform solution and on a film, showed a maximum absorption at 405~476 nm for Copolymers I~VIII. In the PL spectra, Copolymers I~VIII showed maximum peaks at 510~566 nm. The HOMOs, LUMOs and band gaps of the PPV derivatives of Copolymers I~VIII were 5.30~5.77, 3.04~3.24, and 2.5~2.2 eV, respectively. The multi-layered, light-emitting diodes of ITO/PEDOT/copolymers/LiF/Al exhibited turn-on voltages of 6~2.5 V. Copolymer VIII exhibited the maximum brightness of 3,657 cd/m2. Particularly, Copolymer VII, with an identical composition of MEH-PPV and naphthalene-PPV, showed a maximum luminance efficiency and power efficiency of 2.63 cd/A and 1.06 lm/W, respectively.
Keywords:PPV;naphthalene;energy transfer;OLED.
  1. Burroughes JH, Bradley DDC, Brown AR, Marks RN, Mackay K, Friend RH, Holmes AB, et al., Nature, 347, 539 (1990)
  2. Brown AR, Bradley DDC, Burroughes JH, Friend RH, Greenham NC, Burn PL, Holmes AB, Kraft A, Appl. Phys. Lett., 7, 2 (1992)
  3. Yuan ZL, Yu ZQ, Tan ST, J. Mater. Sci., 41(18), 6103 (2006)
  4. Kim YH, Park SJ, Park JW, Kim JH, Kwon SK, Macromol. Res., 15(3), 216 (2007)
  5. Yang CH, Bhongale CJ, Chou CH, Yang SH, Lo CN, Chen TM, Hsu CS, Polymer, 48(1), 116 (2007)
  6. Kim YH, Shin DC, You H, Kwon SK, Polymer, 46(19), 7969 (2005)
  7. Kim YH, Jung SY, Jung SO, Park MH, Kwon SK, J. Polym. Sci. A: Polym. Chem., 44(16), 4923 (2006)
  8. Braun D, Heeer AJ, Appl. Phys. Lett., 58, 1982 (1991)
  9. Friend RH, Gymer RW, Holmes AB, Burroughes JH, Marks RN, Taliani C, Bradley DDC, Dos Santos DA, Bredas JL, Logdlund M, Salaneck WR, Nature, 397(6715), 121 (1999)
  10. Cao Y, Parker ID, Yu G, Zhang C, Heeger AJ, Nature, 397(6718), 414 (1999)
  11. Muller CD, Falcou A, Reckefuss N, Rojahn M, Wiederhirn V, Rudati P, Frohne H, et al., Nature, 421, 829 (2003)
  12. Kraft A, Grimsdale AC, Holmes AB, Angew. Chem. Int. Ed., 37, 402 (1998)
  13. Mitschke M, Bauerle P, J. Mater. Chem., 10, 1471 (2000)
  14. Bernius MT, Inbasekaran M, O'Brien J, Wu WS, Adv. Mater., 12(23), 1737 (2000)
  15. Lee NHS, Chen ZK, Huang W, Xu YS, Cao Y, J. Polym. Sci. A: Polym. Chem., 42(7), 1647 (2004)
  16. Gilch HG, Wheelwright WL, J. Polym. Sci. Part A: Polym. Chem., 4, 1337 (1966)
  17. Greenham NC, Moratti SC, Bradley DDC, Friend RH, Burn PL, Holmes AB, Nature, 365, 628 (1993)
  18. Strukelj M, Papadimitrakopoulos F, Miller TM, Rothberg LJ, Science, 267(5206), 1969 (1995)
  19. Kim YH, Lee HO, Lee KS, Kwon SK, Macromol. Res., 11(6), 471 (2003)
  20. JENEKHE SA, Adv. Mater., 7(3), 309 (1995)
  21. Cornil J, dos Santos DA, Crispin X, Silbey R, Bredas JL, J. Am. Chem. Soc., 120(6), 1289 (1998)
  22. Becker H, Spreitzer H, Ibrom K, Kreuder W, Macromolecules, 32(15), 4925 (1999)
  23. Shin DC, Kim YH, You H, Jin JG, Kwon SK, J. Polym. Sci. A: Polym. Chem., 42(22), 5636 (2004)
  24. Heo J, Park JC, Kang YJ, Kim YH, Kim JW, You H, Kwon SK, 30th PSK Fall Meeting (Korea), 28, 270 (2003)
  25. Onoda M, Uchida M, Ohmori Y, Yoshino K, Jpn. J. Appl. Phys., 32, 3895 (1993)
  26. TASCH S, GRAUPNER W, LEISING G, PU L, WAGNER MW, GRUBBS RH, Adv. Mater., 7(11), 903 (1995)
  27. Hanack M, Segura JL, Spreitzer H, Adv. Mater., 8(8), 663 (1996)
  28. Lee SJ, Ahn CH, Ko JH, Chae SY, Lee MH, Macromol. Res., 14(2), 129 (2006)
  29. Dottinger SE, Hohloch M, Segura JL, Steinhuber E, Hanack M, Tompert A, Oelkrug D, Adv. Mater., 9(3), 233 (1997)
  30. Martinez-Ruiz P, Behnisch B, Schweikart KH, Hanak M, Luer L, Oelkrug D, Chem. Eur. J., 6, 1294 (2000)
  31. Hirao A, Tsunoda Y, Matsuo A, Sugiyama K, Watanabe T, Macromol. Res., 14(3), 272 (2006)
  32. Kim YH, Shin DC, Kwon SK, Polymer, 46(13), 4647 (2005)
  33. Yu YJ, Lee SH, Choi DH, Jin JI, Tessler N, Macromol. Res., 15(2), 142 (2007)
  34. Kim YH, Shin DC, Kim HS, You H, Kwon SK, J. Polym. Sci. A: Polym. Chem., 43(24), 6515 (2005)
  35. Wudl F, Srdanov G, US Patent 5, 189, 136 (1993)
  36. Song SY, Kim KS, Lee YB, Kwak JS, Kim EK, Cho YK, Kwon SK, Zhao Q, Jung WI, Kim JJ, Kim YH, J. Appl. Polym. Sci., 110, 2009 (2008)
  37. Kim YH, Park JW, Shin DC, You H, Kwon SK, J. Polym. Sci. A: Polym. Chem., 45(5), 900 (2007)
  38. Zhao QH, Kim YH, Dang TTM, Shin DC, You H, Kwon SK, J. Polym. Sci. A: Polym. Chem., 45(3), 341 (2007)
  39. Kim YH, Kwon SK, J. Appl. Polym. Sci., 100(3), 2151 (2006)