Tailoring exciton and excimer emission in an exfoliated ultrathin 2D metal-organic framework.

ABSTRACT: 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 coordinatio

SUBMITTER: Liao WM 

PROVIDER: S-EPMC6008449 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature