Tailoring exciton and excimer emission in an exfoliated ultrathin 2D metal-organic framework
Liao, WM; Zhang, JH; Yin, SY; Lin, H; Zhang, XM; Wang, JH; Wang, HP; Wu, K; Wang, Z; Fan, YN; Pan, M; Su, CY
2018
发表期刊NATURE COMMUNICATIONS
ISSN2041-1723
卷号9页码:-
文章类型期刊论文
摘要Two-dimensional (2D) metal-organic frameworks have exhibited a range of fascinating attributes, of interest to numerous fields. Here, a calcium-based metal-organic framework with a 2D layered structure has been designed. Dual emissions relating to intralayer excimers and interlayer trapped excitons are produced, showing excitation-dependent shifting tendency, characteristic of a low dimensional semiconductor nature. Furthermore, the layer stacking by weak van der Waals forces among dynamically coordinated DMF molecules enables exfoliation and morphology transformation, which can be achieved by ultrasound in different ratios of DMF/H2O solvents, or grinding under appropriate humidity conditions, leading to nano samples including ultrathin nanosheets with single or few coordination layers. The cutting down of layer numbers engenders suppression of interlayer exciton-related emission, resulting in modulation of the overall emitting color and optical memory states. This provides a rare prototypical model with switchable dual-channel emissions based on 2D-MOFs, in which the interlayer excitation channel can be reversibly tuned on/off by top-down exfoliation and morphology transformation.
关键词Molecular-sieving Membranes Gas Separation Coordination Polymers Nanosheets Morphology Fluorescence Fabrication Sheets
DOI10.1038/s41467-018-04833-1
收录类别SCI
语种英语
WOS记录号WOS:000435538700002
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/29165
专题中科院上海应用物理研究所2011-2018年
作者单位1.Liao, WM
2.Zhang, JH
3.Yin, SY
4.Lin, H
5.Zhang, XM
6.Wang, JH
7.Wang, HP
8.Wu, K
9.Wang, Z
10.Fan, YN
11.Pan, M
12.Su, CY
推荐引用方式
GB/T 7714
Liao, WM,Zhang, JH,Yin, SY,et al. Tailoring exciton and excimer emission in an exfoliated ultrathin 2D metal-organic framework[J]. NATURE COMMUNICATIONS,2018,9:-.
APA Liao, WM.,Zhang, JH.,Yin, SY.,Lin, H.,Zhang, XM.,...&Su, CY.(2018).Tailoring exciton and excimer emission in an exfoliated ultrathin 2D metal-organic framework.NATURE COMMUNICATIONS,9,-.
MLA Liao, WM,et al."Tailoring exciton and excimer emission in an exfoliated ultrathin 2D metal-organic framework".NATURE COMMUNICATIONS 9(2018):-.
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