Highly Efficient Room-Temperature Phosphorescence from Halogen-Bonding-Assisted Doped Organic Crystals

doi:10.1021/acs.jpca.7b10160

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	Highly Efficient Room-Temperature Phosphorescence from Halogen-Bonding-Assisted Doped Organic Crystals
	Xiao, Lu 1,2; Wu, Yishi 1; Chen, Jianwei 1,2; Yu, Zhenyi 1,2; Liu, Yanping 1,2; Yao, Jiannian 1,2; Fu, Hongbing 1,3,4,5
刊名	JOURNAL OF PHYSICAL CHEMISTRY A
	2017-11-16
卷号	121 期号:45 页码:8652-8658
ISSN号	1089-5639
DOI	10.1021/acs.jpca.7b10160
英文摘要	The development of metal-free organic room temperature phosphorescence (RTP) materials has attracted increasing attention because of their applications in sensors, biolabeling (imaging) agents and anticounterfeiting technology, but remains extremely challenging owing to the restricted spin flip intersystem crossing (ISC) followed by low-yield phosphorescence that cannot compete with nonradiative relaxation processes. Here, we report a facile strategy to realize highly efficient RTP by doping iodo difluoroboron dibenzoylmethane (I-BF(2)dbm-R) derivatives a rigid 4-iodobenzonitrile (Iph-C N) matrix. We found that halogen bonding between cyano group of Iph-C N matrix and iodine atom of I-BF(2)dbm-R dopant is formed in doped crystals, i.e., Iph-C N center dot center dot center dot I-BF(2)dbm-R, which not only suppresses nonradiative relaxation of triplets but also promotes the spin orbit coupling (SOC). As a result, the doped crystals show intense RTP with an efficiency up to 62.3%. By varying the substituent group R in I-BF(2)dbm-R from electron donating -OCH3 to electron accepting -F, -CN groups, the ratio between phosphorescence and fluorescence intensities has been systematically increased from 3.8, 15, to 50.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000416203500012
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/45013]
专题	中国科学院化学研究所
通讯作者	Fu, Hongbing
作者单位	1.Chinese Acad Sci, BNLMS, Inst Chem, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Capital Normal Univ, Dept Chem, BKLOMPD, Beijing 100048, Peoples R China 4.Tianjin Univ, Dept Chem, Tianjin Key Lab Mol Optoelect Sci, Tianjin 300072, Peoples R China 5.Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Lu,Wu, Yishi,Chen, Jianwei,et al. Highly Efficient Room-Temperature Phosphorescence from Halogen-Bonding-Assisted Doped Organic Crystals[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2017,121(45):8652-8658.
APA	Xiao, Lu.,Wu, Yishi.,Chen, Jianwei.,Yu, Zhenyi.,Liu, Yanping.,...&Fu, Hongbing.(2017).Highly Efficient Room-Temperature Phosphorescence from Halogen-Bonding-Assisted Doped Organic Crystals.JOURNAL OF PHYSICAL CHEMISTRY A,121(45),8652-8658.
MLA	Xiao, Lu,et al."Highly Efficient Room-Temperature Phosphorescence from Halogen-Bonding-Assisted Doped Organic Crystals".JOURNAL OF PHYSICAL CHEMISTRY A 121.45(2017):8652-8658.