Energy Transfer Processes And Structure Of Carboxymethyl Cellulose-Tb/Eu Nanocomplexes With Color-Tunable Photoluminescence
CARBOHYDRATE POLYMERS(2021)
摘要
A series of fluorescent nanocomplexes of carboxymethyl cellulose (CMC)/Terbium (Tb)- Europium (Eu) were successfully synthesized without introducing a second ligand. By adjusting the concentration of the coordinated ions, these nanocomplexes exhibit favorably visibly tunable luminescence properties with colors being able to change from green to red. The XPS analysis demonstrates the formation Tb(III)-O2- and Eu(III)-O2- between -OH and -COO- in CMC and Tb3+ or Eu3+ ions, which is advantage for light absorption by UV-Vis spectroscopy and fluorescence spectroscopy. The ligand CMC plays a role in coordinating with terbium and europium ions, but also serves as an energy donor to these metal ions by antenna effect. Moreover, the energy transfer also occurred from terbium ions to europium ions in CMC matrix, which is responsible for the tunable luminescence properties of these complexes.
更多查看译文
关键词
CMC-Tb, Eu nanocomplexes, Tunable luminescence, Luminescence property, Antenna effect, Energy transfer
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要