Accessing the Triplet State in Heavy-Atom-Free Perylene Diimides

	Accessing the Triplet State in Heavy-Atom-Free Perylene Diimides
	Yu, Zhenyi 1,2; Wu, Yishi 1; Peng, Qian 1; Sun, Chunlin 1; Chen, Jianwei 1,2; Yao, Jiannian 1,3,4; Fu, Hongbing 1,3,4
刊名	CHEMISTRY-A EUROPEAN JOURNAL
	2016-03-24
卷号	22 期号:14 页码:4717-4722
关键词	charge transfer intersystem crossing perylene diimide singlet oxygen generation triplet excited state
英文摘要	Previous studies of perylenediimides (PDIs) mostly utilized the lowest singlet excited state S-1. Generation of a triplet excited state (T-1) in PDIs is important for applications ranging from photodynamic therapy to photovoltaics; however, it remains a formidable task. Herein, we developed a heavy-atom-free strategy to prompt the T1S1 intersystem crossing (ISC) by introducing electron-donating aryl (Ar) groups at the head positions of an electron-deficient perylenediimide (PDI) core. We found that the ISC efficiency increases from 8 to 54% and then to 86% by increasing the electron-donating ability of head-substituted aryl groups from phenyl (p-PDI) to methoxyphenyl (MeO-PDI) and then to methylthioxyphenyl (MeS-PDI). By enhancing the intramolecular charge-transfer (ICT) interaction from p-PDI to MeO-PDI, and then to MeS-PDI, singlet oxygen generation via energy-transfer reactions from T-1 of PDIs to O-3(2) was demonstrated with the highest yield of up to 80%. These results provide guidelines for developing new triplet-generating PDIs and related rylene diimides for optoelectronic applications.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/35958]
专题	化学研究所_光化学实验室
作者单位	1.Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Capital Normal Univ, Dept Chem, Beijing Key Lab Opt Mat & Photon Devices, Beijing 100048, Peoples R China 4.Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China
推荐引用方式 GB/T 7714	Yu, Zhenyi,Wu, Yishi,Peng, Qian,et al. Accessing the Triplet State in Heavy-Atom-Free Perylene Diimides[J]. CHEMISTRY-A EUROPEAN JOURNAL,2016,22(14):4717-4722.
APA	Yu, Zhenyi.,Wu, Yishi.,Peng, Qian.,Sun, Chunlin.,Chen, Jianwei.,...&Fu, Hongbing.(2016).Accessing the Triplet State in Heavy-Atom-Free Perylene Diimides.CHEMISTRY-A EUROPEAN JOURNAL,22(14),4717-4722.
MLA	Yu, Zhenyi,et al."Accessing the Triplet State in Heavy-Atom-Free Perylene Diimides".CHEMISTRY-A EUROPEAN JOURNAL 22.14(2016):4717-4722.