高等学校化学学报 ›› 2023, Vol. 44 ›› Issue (11): 20230291.doi: 10.7503/cjcu20230291

• 高分子化学 • 上一篇    下一篇

PNDC-b-PNTPE自组装制备兼具结构色和荧光色的薄膜

段小丽1, 韩慧敏2, 赵明坤2, 任丽霞2()   

  1. 1.鲁东大学化学与材料科学学院, 烟台 264025
    2.天津大学材料科学与工程学院, 天津 300072
  • 收稿日期:2023-06-25 出版日期:2023-11-10 发布日期:2023-09-12
  • 通讯作者: 任丽霞 E-mail:lxren@tju.edu.cn
  • 基金资助:
    国家自然科学基金(21574098)

Self-assembly of PNDC-b-PTPE to Prepare Thin Films with Both Structure and Luminescent Color

DUAN Xiaoli1, HAN Huimin2, ZHAO Mingkun2, REN Lixia2()   

  1. 1.School of Chemistry and Materials Science,Ludong University,Yantai 264025,China
    2.School of Materials Science and Engineering,Tianjin University,Tianjin 300072,China
  • Received:2023-06-25 Online:2023-11-10 Published:2023-09-12
  • Contact: REN Lixia E-mail:lxren@tju.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21574098)

摘要:

设计合成了含有聚集诱导发光四苯乙烯基的大位阻单体四苯乙烯基降冰片烯(NTPE), 通过NTPE与含有双癸烷基的树状单体对苯二甲酸癸烷苯酯基降冰片烯(NDC)的顺序开环易位聚合(ROMP)制备具有聚集诱导发光性质的大位阻树状嵌段聚合物(PNDC-b-PNTPE). 利用薄膜自组装制备了兼具结构色和荧光色的一维光子晶体薄膜. 结果表明, PNDC-b-PNTPE在四氢呋喃(THF)中随着溶剂的挥发而快速自组装成为蓝色的一维光子晶体薄膜, 其最大反射波长(λmax)为443 nm. 一维光子晶体薄膜的横截面扫描电子显微镜照片表明, PNDC-b-PNTPE组装为周期为133 nm的层状结构. 荧光发射光谱分析结果表明, 一维光子晶体薄膜在368 nm波长紫外光的激发下能够发射最大波长为425 nm的荧光. 该兼具结构色和荧光色的薄膜在防伪和显示方面有潜在的应用前景.

关键词: 嵌段共聚物, 自组装, 一维光子晶体, 聚集诱导发光

Abstract:

Big steric monomer with aggregation induced emission tetraphenylethylene group, norbornenyl modified with tetraphenyl ethylene(NTPE), was designed and synthesized, dendronized block copolymer poly(decanephenyl terephthalate based norbornene)-block-poly(norbornenyl modified with tetraphenyl ethylene)(PNDC-b-PNTPE) was prepared by sequential ring-opening metathesis polymerization(ROMP) of NTPE and dendronized monomer with di-decanyl groups, decanephenyl terephthalate based norbornene(NDC). One-dimensional photonic crystal(1D PC) thin film with both structural color and luminescent emission was prepared by thin film self-assembly. The experimental results showed that the 1D PC thin film, which reflects blue color, was prepared by quick self-assembly of PNDC-b-PNTPE in tetrahydrofuran(THF), the maximum reflection wavelength(λmax) was 443 nm. Scanning electron microscopy image of the cross section of the 1D PC thin film showed that the PNDC-b-PNTPE self-assembled into lamellar structures with periodicity of 133 nm. Fluorescent emission spectrum showed that the luminescent emission of the self-assembled 1D PC thin film was 425 nm. The 1D PC thin film with both structural color and luminescent emission shows potential in display and anti-counterfeiting fields.

Key words: Block copolymer, Self-assembly, One-dimensional photonic crystal, Aggregation induced emission

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