In order to improve the third-order nonlinear optical properties of polydiacetylenes (PDAs), various types of PDAs with pi-conjugation between the main chain and pendant side groups were synthesized by crystal engineering for solid-state polymerization. It was clearly seen the optical properties of PDAs could be modified by an increased of pi-electrons per the repeating units.
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Univ Tokyo, Dept Appl Phys, Tokyo 1138656, JapanUniv Tokyo, Dept Appl Phys, Tokyo 1138656, Japan
Watanabe, Haruki
Liu, Yankang
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Univ Tokyo, Dept Appl Phys, Tokyo 1138656, JapanUniv Tokyo, Dept Appl Phys, Tokyo 1138656, Japan
Liu, Yankang
Oshikawa, Masaki
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Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
Univ Tokyo, Kavli Inst Phys & Math Universe WPI, Kashiwa, Chiba 2778583, JapanUniv Tokyo, Dept Appl Phys, Tokyo 1138656, Japan