PNDC-b-PNTPE自组装制备兼具结构色和荧光色的薄膜  

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

作　　者：段小丽 韩慧敏 赵明坤 任丽霞 DUAN Xiaoli;HAN Huimin;ZHAO Mingkun;REN Lixia(School of Chemistry and Materials Science,Ludong University,Yantai 264025,China;School of Materials Science and Engineering,Tianjin University,Tianjin 300072,China)

机构地区：[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

出　　处：《高等学校化学学报》2023年第11期167-172,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21574098)资助。

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(λ_(max))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-bPNTPE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.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 experimen-tal 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(λ_(max))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.

关 键 词：嵌段共聚物 自组装 一维光子晶体 聚集诱导发光 

分 类 号：O632.13[理学—高分子化学]