4TH International Congress on Technology - Engineering & SCIENCE - Kuala Lumpur - Malaysia (2017-08-05)

Synthesis Of Naphthalene Derivatives Using To Blue Light Poly(Arylene Ether)s With Investigation To Organic Light Emitting Diodes
Organic light-emitting diodes (OLEDs)have a wide range of applications in the field of future full-color flat panel displays.Solid-state lighting sources are widely studied by academic researchers and industry because of their advantages such as low drive voltage, fast response, high brightness, low cost advantages. In this research, a polymer which contained Naphthalene derivatives was designed and synthesized in order to apply in deep blue organic light emitting diodes. We use organic light-emitting diodes in host and guest doping system, the polymer NpCz was combined with the Naphthalene derivatives and the Carbazole derivatives which represented the host materials and guest materials, respectively. So as to investigate the potential of the Naphthalene derivatives, CzCz was synthesized which was combined with only Carbazole derivatives. The ether group of polymers lead to the polymer chain twisted that can improve the crystallize characteristic of Naphthalene. The pyrolysis temperature (Td 5%) was higher than 400oC and the glass transition temperature was up to 240oC. Indicating that the polymer has good thermal stability. In the chlorobenzene solution, the polymer NpCz displayed the largest PL intensity as compared with the polymer CzCz and the commercialize material PVK, NpCz and CzCz showed slightly red-shift (<5nm) on PL spectra from solution state to thin film. Due to concentration quenching caused by light red-shift.To calculate the theoretical coordinate in C.I.E. 1931 color space, the NpCz thin film exhibited the C.I.E. coordinate of (0.16, 0.08) that was very close to the official regulations coordinate of the NTSC (0.14, 0.08). Showing the polymer has a good light color. Recently, polymer light-emitting diodes have attracted considerable attention in academic institutions and commercial companies because they have huge potential applications on large-scale and flexible displays. In summary, this compound has been synthesized two kinds of blue light polymer with possessing high thermal and electrochemical stability. Based on the above results, these two polymers have a good application in the future.
Yu-Wei Fan, Chuan-Ming Yeh, Yi-Chiang Huang, Hsu-Feng Lee, Wen-Yao Huang