1,4-二咔唑基苯微米结构的可控制备及光波导性质

doi:10.7503/cjcu20190704

高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (5): 967.doi: 10.7503/cjcu20190704

• 庆祝《高等学校化学学报》复刊40周年专栏 • 上一篇下一篇

1,4-二咔唑基苯微米结构的可控制备及光波导性质

白若男¹,李青^1,^2,^*(),乔山林¹,张春焕²,赵永生^2,^*()

^1. 河北科技大学化学与制药工程学院, 石家庄 050018
^2. 中国科学院化学研究所光化学院重点实验室, 北京 100190

收稿日期:2019-12-24 出版日期:2020-05-10 发布日期:2020-02-26
通讯作者: 李青,赵永生 E-mail:iccaslq@hebust.edu.cn;yszhao@iccas.ac.cn
基金资助:
国家自然科学基金重大项目(21790364)

Controlled Preparation and Optical Waveguide Property of 1,4-Dicarbazolidinylbenzene Microwires ^†

BAI Ruonan¹,LI Qing^1,^2,^*(),QIAO Shanlin¹,ZHANG Chunhuan²,ZHAO Yongsheng^2,^*()

^1. College of Chemistry and Pharmaceutical Engineering, Hebei University of Science and Technology,Shijiazhuang 050018, China
^2. Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences,Beijing 100190, China

Received:2019-12-24 Online:2020-05-10 Published:2020-02-26
Contact: Qing LI,Yongsheng ZHAO E-mail:iccaslq@hebust.edu.cn;yszhao@iccas.ac.cn
Supported by:
† Supported by the Major Projects of National Natural Science Foundation of China(21790364)

摘要/Abstract

摘要：

采用液相组装法通过改变组装条件制备了高结晶性、宽度为2 μm、长度为10~40 μm的1,4-二咔唑基苯一维微米线(BeCzMW). X射线衍射和选区电子衍射结果表明, BeCz分子沿着晶体[100]方向生长. 通过扫描近场光学显微镜进一步发现, BeCzMW被紫外激光激发后产生的荧光被限域在一维结构中, 并沿着一维方向进行传导. BeCzMW在420 nm处的光学损耗系数R=0.0628 dB/μm, 表明BeCzMW具有良好的光波导性能.

关键词: 1,4-二咔唑基苯纳米线, 自组装, 可控制备, 光波导, 纳米光子学

Abstract:

One-dimensional 1,4-dicarbazolylbenzene microwires(BeCzMW) with high crystallinity and uniform size were prepared with a liquid phase assembly method by changing the assembly conditions. The results of X-ray diffraction and selective area electron diffraction indicated BeCz molecules grew along the crystal [100] direction. Scanning near-field optical microscopy was used to find that the fluorescence from the BeCzMW excited with an ultraviolet laser was effectively confined in the nanowire structure and propagated along the one-dimensional direction. The optical loss coefficient of BeCzMW was 0.0628 dB/μm at 420 nm, indicating that BeCzMW has good optical waveguide performance.

Key words: 1,4-Dicarbazolidinylbenzene nanowire, Self-assembly, Controlled preparation, Optical waveguide, Nanophotonics

中图分类号:

O644

TrendMD:

白若男, 李青, 乔山林, 张春焕, 赵永生. 1,4-二咔唑基苯微米结构的可控制备及光波导性质. 高等学校化学学报, 2020, 41(5): 967.

BAI Ruonan, LI Qing, QIAO Shanlin, ZHANG Chunhuan, ZHAO Yongsheng. Controlled Preparation and Optical Waveguide Property of 1,4-Dicarbazolidinylbenzene Microwires ^†. Chem. J. Chinese Universities, 2020, 41(5): 967.

图/表 6

Fig.1 Molecular structure of 1,4-dicarbonazobenzene

Fig.2 Bright-field microscopy images of BeCzMW with different growing time Growing time: (A) 30; (B) 60; (C) 90.

Fig.3 PL microscopy image of BeCzMW(A) and UV-Vis(a) and fluorescence emission(b) spectra of BeCzMW(B) Inset: SEM image of a single BeCzMW.

Fig.4 TEM image of the BeCzMW(A) and XRD pattern of BeCzMW(a) and simulated pattern of BeCZ powder using Mercury software(b)(B) Inset: SAED pattern of a single sheet.

Fig.5 Molecular packing along the crystal [100] direction using the Mercury and intermolecular distances by DFT calculation at B3LYP/6-31++G**(A) and the predicted growth morphology of the BeCz molecules based on the attachment energies using the Materials Studio package(B)

Fig.6 Bright-field(top) and PL images(a—e) obtained from a single BeCzMW by exciting the wire at different positions of BeCzMW(A), spatially resolved PL spectra from the tip of the BeCzMW for different separation distances between the excitation spot and tip of the wire shown in (A)(B) and curves fitted by an exponential decay function Itip/Ibody(C) Pictures a—e shown in (A) display the PL images of the single BeCzMW obtained by moving the position of the excitation light from left to right. (B) Curves a—e are the PL spectra of the right endpoint of figures a—e shown in (A), respectively. With the distance between the excitation site and the right emitting end of the BeCzMW decreased, the PL emission intensity of the right end of the BeCzMW increased (a→e).

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1,4-二咔唑基苯微米结构的可控制备及光波导性质

Controlled Preparation and Optical Waveguide Property of 1,4-Dicarbazolidinylbenzene Microwires ^†

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1,4-二咔唑基苯微米结构的可控制备及光波导性质

Controlled Preparation and Optical Waveguide Property of 1,4-Dicarbazolidinylbenzene Microwires †

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Controlled Preparation and Optical Waveguide Property of 1,4-Dicarbazolidinylbenzene Microwires ^†