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| Highly Sensitive Luminescent Sensor for Cr(Ⅲ) Based on a Water Dispersed Nano-sized Amorphous Methyl Salicylate Terbium Complex |
| Author Name | Affiliation | E-mail | | LIU Xiao-Jun | Research Center for Rare Earths & Nano/micro Functional Material, Nanchang University, Nanchang 330031, China | | | SUN Li-Ting | Research Center for Rare Earths & Nano/micro Functional Material, Nanchang University, Nanchang 330031, China | | | ZHANG Shu | Research Center for Rare Earths & Nano/micro Functional Material, Nanchang University, Nanchang 330031, China | | | ZHOU Chen | Research Center for Rare Earths & Nano/micro Functional Material, Nanchang University, Nanchang 330031, China | | | LIU Yan-Zhu | Research Center for Rare Earths & Nano/micro Functional Material, Nanchang University, Nanchang 330031, China | zhouxuezhen@ncu.edu.cn | | ZHOU Xue-Zhen | Research Center for Rare Earths & Nano/micro Functional Material, Nanchang University, Nanchang 330031, China | | | LI Yong-Xiu | Research Center for Rare Earths & Nano/micro Functional Material, Nanchang University, Nanchang 330031, China | |
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| Abstract: To expand the application fields of rare earth fluorescence complexes, and meet the requirements of high sensitivity and selectivity for the detection of trace chromium in aqueous solution, we prepared a sensitive luminescence sensor for Cr3+ ion based on a water dispersed nano-sized amorphous luminescence terbium complex with methyl salicylate (A-MS-Tb). It was found that the synthesized A-MS-Tb is an amorphous precipitation with particle size ranging from 50 to 100 nm and similar composition to the reported crystalline MS-Tb(C-MS-Tb). A-MS-Tb showed strong green luminescence at 494, 549, 591, 625 nm, which belongs to the energy level transition of 5D4→7FJ (J=6, 5, 4, 3) of Tb3+, respectively. The difference between A-MS-Tb and the reported C-MS-Tb lies in the stability and dispersion performance towards water which is very important for expanding its application as materials and sensors. In particularly, with the addition of Cr3+ into the water suspension of A-MS-Tb, the coordination between the ligand and Tb3+ is weakened, causing its green fluorescence to be quenched. Therefore, a highly sensitive sensor for detecting Cr3+ was established, and the sensitivity, selectivity and anti-interference ability was evaluated. |
| Keywords: methyl salicylate terbium complex luminescence nano size sensor for Cr3+ |
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| LIU Xiao-Jun,SUN Li-Ting,ZHANG Shu,ZHOU Chen,LIU Yan-Zhu,ZHOU Xue-Zhen,LI Yong-Xiu.Highly Sensitive Luminescent Sensor for Cr(Ⅲ) Based on a Water Dispersed Nano-sized Amorphous Methyl Salicylate Terbium Complex[J].Chinese Journal of Inorganic Chemistry,2019,35(8):1445-1454. |
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