Development of benzylidene-methyloxazolone based AIEgens and decipherment of their working mechanism

	Development of benzylidene-methyloxazolone based AIEgens and decipherment of their working mechanism
	Jiang, Meijuan 1,2; He, Zikai 1,3; Zhang, Yilin 4; Sung, Herman H. Y.1; Lam, Jacky W. Y.1,2; Peng, Qian ; Yan, Yongli 6; Wong, Kam Sing 4,5; Williams, Ian D.1; Zhao, Yongsheng 6
刊名	JOURNAL OF MATERIALS CHEMISTRY C
	2017-08-07
卷号	5 期号:29 页码:7191-7199
英文摘要	Based on an analogue of green fluorescent protein chromophore benzylidene-methyloxazolone (BMO), a series of fluorophores with an additional phenyl group, BMO-PH, BMO-PF, BMO-PM and BMO-PC, have been prepared and are found to be AIE-active. Their solutions are weakly emissive and their aggregation or solid states are highly emissive. Although these compounds readily undergo efficient E/Z isomerization (EZI) upon UV irradiation in solution, the intramolecular rotation around the double bond and phenyl rotation around the single bond serve as the key non-radiative decay channels to dissipate the excited-state energies. The EZI is only the phenomenal result. In aggregates, these intramolecular motions are greatly restricted by multiple intermolecular interactions, resulting in the AIE effect. To ensure a high solid-state quantum yield, prevention of detrimental pi-pi stacking is of essence. An additional phenyl group to BMO is found to increase the pi-pi distance and weaken the pi-pi interaction. Thus, the quantum yields are increased. Strong electron-donating groups and extended conjugation are effective at tuning the emission color bathochromically. Based on these principles, we succeeded in increasing the solid-state quantum yield up to 50% and obtaining a red emission maximum of 635 nm. Moreover, these compounds are promising for applications in photoswitches and fluorescent patterns, and their crystals are good candidates for luminescent waveguides with low light loss efficiency.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/39194]
专题	化学研究所_有机固体实验室
作者单位	1.Hong Kong Univ Sci & Technol, State Key Lab Mol Neurosci,Div Life Sci,Dept Chem, Inst Mol Funct Mat,Div Biomed Engn,HKUST Jockey C, Hong Kong Branch,Chinese Natl Engn Res Ctr Tissue, Kowloon, Hong Kong, Peoples R China 2.HKUST Shenzhen Res Inst, Guangdong Prov Key Lab Brain Sci Dis & Drug Dev, 9 Yuexing 1st RD,South Area,Hitech Pk, Shenzhen 518057, Peoples R China 3.Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China 4.Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China 5.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing 100190, Peoples R China 6.Chinese Acad Sci, BNLMS, Inst Chem, Beijing 100190, Peoples R China 7.South China Univ Technol, State Key Lab Luminescent Mat & Devices, SCUT HKUST Joint Res Lab, Guangdong Innovat Res Team, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Meijuan,He, Zikai,Zhang, Yilin,et al. Development of benzylidene-methyloxazolone based AIEgens and decipherment of their working mechanism[J]. JOURNAL OF MATERIALS CHEMISTRY C,2017,5(29):7191-7199.
APA	Jiang, Meijuan.,He, Zikai.,Zhang, Yilin.,Sung, Herman H. Y..,Lam, Jacky W. Y..,...&Tang, Ben Zhong.(2017).Development of benzylidene-methyloxazolone based AIEgens and decipherment of their working mechanism.JOURNAL OF MATERIALS CHEMISTRY C,5(29),7191-7199.
MLA	Jiang, Meijuan,et al."Development of benzylidene-methyloxazolone based AIEgens and decipherment of their working mechanism".JOURNAL OF MATERIALS CHEMISTRY C 5.29(2017):7191-7199.