Water-Molecule-Induced Emission Transformation of Zero-Dimension Antimony-Based Metal Halide.
Jian-Bin LuoJun-Hua WeiZhi-Zhong ZhangDai-Bin KuangPublished in: Inorganic chemistry (2021)
Low-dimensional organic-inorganic metal halides have recently emerged as a class of promising luminescent materials. However, the intrinsic toxicity of lead would strongly hamper future application. Herein, we synthesized a new type of lead-free zero-dimensional (0D) antimony-based organic-inorganic metal halide single crystals, (PPZ) 2 SbCl 7 ·5H 2 O (PPZ = 1-phenylpiperazine), which features a broadband emission at 720 nm. Ultrafast transient absorption and temperature-dependent photoluminescence (PL) spectra are combined to investigate the PL mechanism, revealing that self-trapped exciton recombination was involved. Furthermore, it is interesting that (PPZ) 2 SbCl 7 ·5H 2 O material shows reversible PL emission transformation between red light (720 nm) and yellow light (590 nm) as water molecules are inserted or removed from the lattice. Such reversible emission transformation phenomenon renders the (PPZ) 2 SbCl 7 ·5H 2 O as a potential low-cost water sensing material.
Keyphrases
- low cost
- photodynamic therapy
- energy transfer
- water soluble
- quantum dots
- light emitting
- perovskite solar cells
- solid state
- dna damage
- high glucose
- density functional theory
- diabetic rats
- risk assessment
- metal organic framework
- human health
- solar cells
- climate change
- endothelial cells
- blood brain barrier
- subarachnoid hemorrhage
- ionic liquid