Synthesis and Electron Transporting Properties of Diblock Copolymers Consisting of Polyfluorene and Polystyrene

被引：1

作者：

Cheng, Jin ^{[1
,2
,3
]}

Jiang, Ruoyu ^{[1
,3
]}

Shan, Yuhua ^{[2
]}

Sun, Hong ^{[4
]}

Kanehashi, Shinji ^{[3
,5
]}

Ogino, Kenji ^{[3
,5
]}

机构：

[1] Changzhou Vocat Inst Engn, Dept Chem Engn & Pharmaceut Engn, Changzhou 213164, Peoples R China

[2] Changzhou Univ, Jiangsu Prov Key Lab Fine Petrochem Engn, Changzhou 213164, Peoples R China

[3] Tokyo Univ Agr & Technol, Grad Sch Bioapplicat & Syst Engn, 2-24-16 Nakacho, Koganei 1848588, Japan

[4] Zhejiang Fenghong New Mat Co Ltd, Huzhou 313300, Peoples R China

[5] Tokyo Univ Agr & Technol, Inst Global Innovat Res, 2-24-16 Nakacho, Koganei 1848588, Japan

来源：

MATERIALS | 2024年 / 17卷 / 11期

基金：

日本学术振兴会;

关键词：

electron mobility; crystallinity; diblock copolymers; thermal properties; photoluminescent stability; BETA-PHASE FORMATION; OPTICAL-PROPERTIES; CHARGE-TRANSPORT; EMISSION; POLY(3-HEXYLTHIOPHENE); DERIVATIVES; MORPHOLOGY; MOBILITY; ORDER;

D O I：

10.3390/ma17112694

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Poly(9,9-di-n-octylfluorene) (PFO) is a promising material for polymer light-emitting diodes (PLEDs) due to its advantageous properties. To enhance its electron transporting capabilities, diblock polymers were synthesized by attaching polystyrene (PSt) chains of varying lengths to one end of the PFO molecule. In a comparative study with PFO homopolymer, the diblock polymers maintained similar thermal properties, absorption spectra, and photoluminescent stability, while exhibiting slightly deeper lowest unoccupied molecular orbital (LUMO) levels and higher crystallinity. Notably, diblock polymers with shorter polystyrene blocks demonstrated higher electron mobility than the PFO homopolymer and diblock polymers with excessively long polystyrene blocks. These findings suggest that the optimal chain length of the polystyrene block is crucial for maximizing electron mobility, thus offering valuable insights for designing high-performance PLED materials.

引用

页数：10

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