中国物理B ›› 2021, Vol. 30 ›› Issue (8): 86101-086101.doi: 10.1088/1674-1056/ac0691

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Controllable preparation and disorder-dependent photoluminescence of morphologically different C60 microcrystals

Wen Cui(崔雯)1,†, De-Jun Li(李德军)1, Jin-Liang Guo(郭金良)1, Lang-Huan Zhao(赵琅嬛)1, Bing-Bing Liu(刘冰冰)2, and Shi-Shuai Sun(孙士帅)3,‡   

  1. 1 College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China;
    2 State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;
    3 College of Science, Tianjin University of Technology, Tianjin 300384, China
  • 收稿日期:2021-03-18 修回日期:2021-05-26 接受日期:2021-05-29 出版日期:2021-07-16 发布日期:2021-08-02
  • 通讯作者: Wen Cui, Shi-Shuai Sun E-mail:cuiwen2005xj@126.com;sssdashuai@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11504269 and 11504267), Tianjin Natural Science Foundation (Grant No. 20JCQNJC00660), and the Program for Innovative Research in University of Tianjin (Grant No. TD13-5077).

Controllable preparation and disorder-dependent photoluminescence of morphologically different C60 microcrystals

Wen Cui(崔雯)1,†, De-Jun Li(李德军)1, Jin-Liang Guo(郭金良)1, Lang-Huan Zhao(赵琅嬛)1, Bing-Bing Liu(刘冰冰)2, and Shi-Shuai Sun(孙士帅)3,‡   

  1. 1 College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China;
    2 State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;
    3 College of Science, Tianjin University of Technology, Tianjin 300384, China
  • Received:2021-03-18 Revised:2021-05-26 Accepted:2021-05-29 Online:2021-07-16 Published:2021-08-02
  • Contact: Wen Cui, Shi-Shuai Sun E-mail:cuiwen2005xj@126.com;sssdashuai@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11504269 and 11504267), Tianjin Natural Science Foundation (Grant No. 20JCQNJC00660), and the Program for Innovative Research in University of Tianjin (Grant No. TD13-5077).

摘要: Different C60 crystals were synthesized by precipitation from a mixture of the good solvent m-xylene and the poor solvent isopropyl alcohol. The samples were characterized by scanning electron microscopy (SEM), Raman spectroscopy, thermogravimetric analysis, and high resolution transmission electron microscope (HRTEM). We found that the morphologies and sizes of the samples could be controlled by adjusting the volume ratio between the good and poor solvents. Especially, an unexpected short flower column-like crystal was synthesized at low ratios (from 1:6 to 1:12). Room temperature photoluminescence (PL) and HRTEM studies of the C60 crystal samples reveal that the PL efficiency of the crystals decreases with increasing crystalline order and that the disordered C60 crystals synthesized at the ratio of 1:2 show 10 times higher PL efficiency than that of pristine C60. The mechanism of the growth process of these C60 crystals was also studied by replacing the good solvents m-xylene with toluene and mesitylene.

关键词: C60 crystals, morphology, photoluminescence, growth process

Abstract: Different C60 crystals were synthesized by precipitation from a mixture of the good solvent m-xylene and the poor solvent isopropyl alcohol. The samples were characterized by scanning electron microscopy (SEM), Raman spectroscopy, thermogravimetric analysis, and high resolution transmission electron microscope (HRTEM). We found that the morphologies and sizes of the samples could be controlled by adjusting the volume ratio between the good and poor solvents. Especially, an unexpected short flower column-like crystal was synthesized at low ratios (from 1:6 to 1:12). Room temperature photoluminescence (PL) and HRTEM studies of the C60 crystal samples reveal that the PL efficiency of the crystals decreases with increasing crystalline order and that the disordered C60 crystals synthesized at the ratio of 1:2 show 10 times higher PL efficiency than that of pristine C60. The mechanism of the growth process of these C60 crystals was also studied by replacing the good solvents m-xylene with toluene and mesitylene.

Key words: C60 crystals, morphology, photoluminescence, growth process

中图分类号:  (Structure of fullerenes and related hollow and planar molecular structures)

  • 61.48.-c
68.37.Hk (Scanning electron microscopy (SEM) (including EBIC)) 78.55.-m (Photoluminescence, properties and materials) 81.10.-h (Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)