Morphological effects on the third-order nonlinear optical response of polydiacetylene nanofibers

被引：0
|
作者：
Haruki Maki
Rie Chiba
Tsunenobu Onodera
Hitoshi Kasai
Rodrigo Sato
Yoshihiko Takeda
Hidetoshi Oikawa
机构：
[1] Tohoku University,Institute of Multidisciplinary Research for Advanced Materials (IMRAM)
[2] Center for Green Research on Energy and Environmental Materials,Hydrogen Materials Engineering Group
[3] National Institute for Materials Science (NIMS),undefined
来源：
MRS Communications | 2019年 / 9卷
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摘要：
The third-order nonlinear optical (NLO) susceptibility for morphologically controlled polydiacetylene (PDA) nanocrystals (NCs) and PDA nanofibers (NFs) have been determined for the first time by the experimental combination of transient pump-probe spectroscopy and spectroscopic ellipsometry. The figure of the merit of PDA NFs was much superior to PDA NCs and/or PDA bulk crystals, and the excitonic relaxation time was of order of sub-pico second. Namely, this is the first case to reveal the morphological effect on NLO response. PDA NFs having the long effective π-conjugation length are one of the most promising organic third-order NLO nanomaterials toward the photonic device application
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页码：1087 / 1092
页数：5
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