A rhodamine-based sensing probe excited by upconversion NaYF4:Yb3+/Er3+ nanoparticles: The realization of simple Cu(II) detection with high sensitivity and unique selectivity

作者：Jiang, Xiaoming^*; Meng, Guangwei

来源：Journal of Luminescence, 2013, 135: 227-231.

DOI：10.1016/j.jlumin.2012.10.011

• Cu2+
• Upconversion nanoparticles
• Sensor
• Rodamine derivative

In this paper, upconversion nanoparticles of beta-NaYF4:Yb3+/Er3+ and a rodamine derivative of 2-amino-3',6'-bis(ethylamino)-2',7'-dimethyl-3',9a'-dihydrospiro[isoindoline-1,9'-xanthen]-3-one (referred as Rd-NH2) were constructed and fully characterized. The energy transfer process between beta-NaYF4:Yb3+/Er3+ and Rd-NH2 was also investigated. Data analysis suggests that the upconversion emission from beta-NaYF4:Yb3+/Er3+ can efficiently excite Rd-NH2. Using this upconversion emission as an excitation source and Rd-NH2 as a sensing probe, their sensing behavior towards Cu2+ was investigated. It was found that beta-NaYF4:Yb3+/Er3+:Rd-NH2 system showed linear response towards Cu2+ in the range of 2-14 mu M. In addition, beta-NaYF4:Yb3+/Er3+:Rd-NH2 system processed good selectivity towards Cu2+ and high chemostability, making beta-NaYF4:Yb3+/Er3+:Rd-NH2 a promising sensing system towards Cu2+.

• 出版日期2013-3
• 单位吉林大学