Blue Thermally Activated Delayed Fluorescence Polymers with Nonconjugated Backbone and Through-Space Charge Transfer Effect

doi:10.1021/jacs.7b10257

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	Blue Thermally Activated Delayed Fluorescence Polymers with Nonconjugated Backbone and Through-Space Charge Transfer Effect
	Shao, Shiyang 1; Hu, Jun 1,2; Wang, Xingdong 1; Wang, Lixiang 1; Jing, Xiabin 1; Wang, Fosong 1
刊名	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
	2017-12-13
卷号	139 期号:49 页码:17739-17742
ISSN号	0002-7863
DOI	10.1021/jacs.7b10257
英文摘要	We demonstrate novel molecular design for thermally activated delayed fluorescence (TADF) polymers based on a nonconjugated polyethylene backbone with through-space charge transfer effect between pendant electron donor (D) and acceptor (A) units. Different from conventional conjugated D-A polymers with through bond charge transfer effect, the nonconjugated architecture avoids direct conjugation between D and A units, enabling blue emission. Meanwhile, spatial pi-pi interaction between the physically separated D and A units results in both small singlet-triplet energy splitting (0.019 eV) and high photoluminescence quantum yield (up to 60% in film state). The resulting polymer with 5 mol % acceptor unit gives efficient blue electroluminescence with Commission Internationale de l'Eclairage coordinates of (0.176, 0.269), together with a high external quantum efficiency of 12.1% and low efficiency roll-off of 4.9% (at 1000 cd m(-2)), which represents the first example of blue TADF nonconjugated polymer.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000418204600010
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/45157]
专题	中国科学院化学研究所
通讯作者	Wang, Lixiang
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Shao, Shiyang,Hu, Jun,Wang, Xingdong,et al. Blue Thermally Activated Delayed Fluorescence Polymers with Nonconjugated Backbone and Through-Space Charge Transfer Effect[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2017,139(49):17739-17742.
APA	Shao, Shiyang,Hu, Jun,Wang, Xingdong,Wang, Lixiang,Jing, Xiabin,&Wang, Fosong.(2017).Blue Thermally Activated Delayed Fluorescence Polymers with Nonconjugated Backbone and Through-Space Charge Transfer Effect.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,139(49),17739-17742.
MLA	Shao, Shiyang,et al."Blue Thermally Activated Delayed Fluorescence Polymers with Nonconjugated Backbone and Through-Space Charge Transfer Effect".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 139.49(2017):17739-17742.