超精细二阶有机非线性光学晶体纳米线的单滴自组装

Tian Tian, Cai Bin, Cheng Qingqing, Fan Cheng, Wang Yanyan, Xu Gongjie, Gu Fuxing, Liao Feng, Sugihara Okihiro, Hase Eiji, Yasui Takeshi

Shanghai Key Lab of Modern Optical System, Ministry of Education, University of Shanghai for Science and Technology, Shanghai, 200093, China.

Graduate School of Engineering, Utsunomiya University, Utsunomiya, 321-8585, Japan.

Nanoscale Res Lett. 2019 Aug 7;14(1):269. doi: 10.1186/s11671-019-3103-y.

In this study, we propose a one-drop self-assembly method, which proved capable of successfully preparing 4-N, N-dimethylamino-4'-N'-methyl-stilbazolium tosylate (DAST) single-crystalline nanowires (NWs). The apparent roughness of the DAST NWs was determined to be less than 100 pm by using a high-resolution atomic force microscope, indicating their ultrafine quality. The DAST NWs also exhibited excellent nonlinear optical properties, including two-photon excited fluorescence and second harmonic generation, which could enable the production of low-cost, low-power-consumption wideband wavelength conversion devices. Thus, the described method may provide a new avenue for organic NW fabrication.

在本研究中，我们提出了一种一滴自组装方法，该方法被证明能够成功制备对甲苯磺酸4-N，N-二甲基氨基-4'-N'-甲基-二苯乙烯嗡盐（DAST）单晶纳米线（NWs）。使用高分辨率原子力显微镜测定，DAST纳米线的表观粗糙度小于100皮米，表明其具有超精细的品质。DAST纳米线还表现出优异的非线性光学特性，包括双光子激发荧光和二次谐波产生，这能够实现低成本、低功耗宽带波长转换器件的生产。因此，所描述的方法可能为有机纳米线制造提供一条新途径。