Length Effect of Alkyl Linkers on the Crystalline Transition in Naphthalene Diimide-Based Double-Cable Conjugated Polymers

被引：8

作者：

Hu, Zhijie ^{[1
,2
]}

Xiao, Chengyi ^{[1
,2
]}

Tan, Wen Liang ^{[3
]}

Liu, Baiqiao ^{[1
,2
]}

Liang, Shijie ^{[1
,2
]}

Jiang, Xudong ^{[4
]}

McNeil, Christopher R. ^{[3
]}

Li, Weiwei ^{[1
,2
]}

机构：

[1] Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Beijing 100029, Peoples R China

[2] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China

[3] Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia

[4] Univ South China, Coll Chem & Chem Engn, Hengyang 421001, Peoples R China

来源：

MACROMOLECULES | 2022年 / 55卷 / 12期

基金：

中国国家自然科学基金;

关键词：

PHASE-SEPARATION; EFFICIENCY; ENABLES;

D O I：

10.1021/acs.macromol.2c00444

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The alkyl chains as linkers in double-cable conjugated polymers play an important role in the solubility, packing motif, morphology, and voltage loss in single-component organic solar cells (SCOSCs). In this work, we incorporate alkyl linkers with lengths from hexyl (C6H12) to hexadecyl (C16H32) into naphthalene diimide-based double-cable conjugated polymers. These polymers show a parabolictype distribution in crystallinity, in which the crystalline degree of the polymers is enhanced in sequence from P06 (C6H12 linker) to P12 (C12H24 linker) and then decreased in longer alkyl linkers. These differences bring into deviations like optical bandgaps, packing motif, charge transport, and photovoltaic performance in SCOSCs. This work demonstrates the importance of linkers' length on crystallinity and packing motif as well as provides a new viewpoint in guiding the design of new double-cable conjugated polymers.

引用

页码：5188 / 5196

页数：9

共 37 条

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