Fast charged carrier mobility of a triphenylene-based polymer film possessing nematic order

• Autorzy: Inoue M. , Monobe H. , Ukon M. , Petrov V. F. , Watanabe T. , Kumano A. , Shimizu Y.
• Języki publikacji: EN

Abstrakty

EN

A polymer film was prepared by the photopolymerization in a discotic nematic (N_D) mesophase of a mixture of the polymerizable triphenylene mesogen isomers. It was found that the film shows a relatively fast mobility of charged carrier (10^-3 cm²V^-1s^-1), which is probably faster than that of the monomeric N_D mesophase. The microscopic domains in the film were found to keep the liquid crystalline order even after the polymerization evidenced by the IR spectra showing the small decrease in the local order parameter and by the X-ray diffraction (XRD) patterns comparable to those before the polymerization. It was indicated that in the photopolymerization, the long range order of molecules can be almost remained, the short range one is variant and, thus, such an in-situ liquid crystalline polymerization could lead to the enhancement of charge transport efficiency. Furthermore, the polymerized film was applied to a simple electroluminescent device to reveal that it certainly works as a hole transport layer because the luminescence is clearly induced under bias.

Słowa kluczowe

EN

liquid crystalline semiconductor; discotic nematic phase; photopolymerization; charged carrier mobility; triphenylene; electroluminescent device

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2005
• Tom: Vol. 13, No. 4
• Strony: 303--308
• Opis fizyczny: Bibliogr. 26 poz., wykr.

Twórcy

autor

Inoue M.

• Display Research Laboratories, JSR Corporation, 100 Kawajiri, Yokkaichi, 510-8552 Mie, Japan
• Mesophase Material Laboratory, Japan Chemical Innovation Institute 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan

autor

Monobe H.

• Molecular Materials and Devices Research Group, Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology (AIST) - Kansai Centre,1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan

autor

Ukon M.

• Display Research Laboratories, JSR Corporation, 100 Kawajiri, Yokkaichi, 510-8552 Mie, Japan
• Mesophase Material Laboratory, Japan Chemical Innovation Institute 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan

autor

Petrov V. F.

• Molecular Materials and Devices Research Group, Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology (AIST) - Kansai Centre,1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan

autor

Watanabe T.

• Display Research Laboratories, JSR Corporation, 100 Kawajiri, Yokkaichi, 510-8552 Mie, Japan

autor

Kumano A.

• Display Research Laboratories, JSR Corporation, 100 Kawajiri, Yokkaichi, 510-8552 Mie, Japan

autor

Shimizu Y.

• Molecular Materials and Devices Research Group, Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology (AIST) - Kansai Centre,1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan

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