Synthesis of Dendrimer Based Polymeric and Macrocyclic Complexes with a Platinum-Acetylide π-Conjugated Organometallic Core

Woo-Dong Jang

Macromolecular Research, Vol.13, No.4, 334-338, August, 2005

Woo-Dong Jang^†

Department of Materials Science and Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

E-mail:

A three-layered poly(benzyl ether) dendrimer having a bis-ethynylbenzene core was synthesized and characterized with 1H NMR and MALDI-TOF-MS spectroscopy. The dendrimer was reacted with platinum complexes to obtain platinum-acetylide based organometallic polymers. When the dendrimer was reacted with trans-[PtCl2(PEt3)2], a high molecular weight polymeric compound was formed, whereas, with cis-[PtCl2dppp], a uniform molecular weight compound was formed, which was found to be a dimeric metallacycle by 1H NMR, 31P NMR and ESI-TOF-MS spectroscopy. Both these complexes exhibited relatively a strong emission around 440 nm, indicating that they could be potential candidates for blue emitting polymer LEDs.

Keywords:dendrimer;platinum-acetylide;metallacycle;supramolecules;π-conjugation

[References]

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Sato T, Jiang DL, Aida T, J. Am. Chem. Soc., 121(45), 10658 (1999)
Choi MS, Aida T, Yamazaki T, Yamazaki I, Chem. Eur. J., 8, 2667 (2002)
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[Referenced By]

[1] Tomalia DA, Baker H, Dewald J, Hall M, Kallos G, Martin S, Roeck J, Ryder J, Smith P, Polym. J., 17, 117 (1985)

[2] Narayanan VV, Newkome GR, Topics in Current Chemistry, 197, 19 (1998)

[3] Bosman AW, Janssen HM, Meijer EW, Chem. Rev., 99(7), 1665 (1999)

[4] Hong T, Kim HI, Macromol. Res., 12(2), 178 (2004)

[5] Knapen JW, Vandermade AW, Dewilde JC, Vanleeuwen PW, Wijkens P, Grove DM, Vankoten G, Nature, 372(6507), 659 (1994)

[6] Onitsuka K, Fujimoto M, Ohshiro N, Takahashi S, Angew. Chem.-Int. Edit., 38, 689 (1999)

[7] Onitsuka K, Iuchi A, Fujimoto M, Takahashi S, Chem. Commun., 741 (2001)

[8] Onitsuka K, Kitiajima H, Fujimoto M, Iuchi A, Takei F, Takahashi S, Chem. Commun., 2576 (2002)

[9] Enomoto M, Kishimura A, Aida T, J. Am. Chem. Soc., 123(23), 5608 (2001)

[10] Kim C, Koo BW, Lee SB, Song CK, Macromol. Res., 10(3), 178 (2002)

[11] Liu Y, Jiang SJ, Glusac K, Powell DH, Anderson DF, Schanze KS, J. Am. Chem. Soc., 124(42), 12412 (2002)

[12] Wong WY, Lu GL, Choi KH, Shi JX, Macromolecules, 35(9), 3506 (2002)

[13] Onitsuka K, Yamamoto S, Takahashi S, Angew. Chem.-Int. Edit., 38, 174 (1999)

[14] Lee SJ, Hu AG, Lin WB, J. Am. Chem. Soc., 124(44), 12948 (2002)

[15] Jiang H, Lin WB, J. Am. Chem. Soc., 126(24), 7426 (2004)

[16] Mitsunobu O, Synthesis, 1, 1 (1981)

[17] Hawker CJ, Frechet JMJ, J. Am. Chem. Soc., 112, 7638 (1990)

[18] Sato T, Jiang DL, Aida T, J. Am. Chem. Soc., 121(45), 10658 (1999)

[19] Choi MS, Aida T, Yamazaki T, Yamazaki I, Chem. Eur. J., 8, 2667 (2002)

[20] Li WS, Jiang DL, Aida T, Angew. Chem.-Int. Edit., 43, 2943 (2004)