Suzuki Yasutaka, Koga Satoshi, Kitaura Kana, Kawamata Jun, Yano Keigo, Hoshino Norihisa, Akutagawa Tomoyuki, Hayashi Shotaro
Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi 753-8512, Japan.
School of Engineering Science, Kochi University of Technology, 185 Tosayamada Miyanokuchi, Kami, Kochi 782-8502, Japan.
Langmuir. 2023 Aug 22;39(33):11646-11652. doi: 10.1021/acs.langmuir.3c01030. Epub 2023 Aug 9.
Distinguishing the luminescence contribution from the surface and bulk of a crystal is a long-standing challenge in crystal materials. Herein, three-dimensional, multiphoton, luminescence microscope imaging of the elastic molecular single crystal 1,4-bis(4-methylthien-2-yl)-2,3,5,6-tetrafluorobenzene, was conducted. Further, the luminescence contribution from the surface and bulk of the crystal was experimentally distinguished. Strong luminescence was observed only from the surface of the crystal, while the bulk did not emit strongly. Furthermore, the surface and bulk luminescence behavior responded well to the mechanical shape change of the crystal; i.e., strong luminescence was observed for the elongated side of the crystal.
区分晶体表面和内部的发光贡献是晶体材料领域长期存在的一项挑战。在此，对弹性分子单晶1,4-双(4-甲基噻吩-2-基)-2,3,5,6-四氟苯进行了三维多光子发光显微镜成像。此外，通过实验区分了晶体表面和内部的发光贡献。仅在晶体表面观察到强烈的发光，而内部没有强烈发光。此外，表面和内部的发光行为对晶体的机械形状变化反应良好；也就是说，在晶体伸长的一侧观察到强烈的发光。
