Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5141335 | Talanta | 2017 | 22 Pages |
Abstract
Lanthanide coordination polymers (LCPs) have emerged as fascinating materials because of their specific structure and properties. In this work, utilizing hydrosoluble biomolecule of guanosine-5â²-monophosphate (GMP) as bridging linker, lanthanide terbium ions (Tb3+) as metal nodes, and silver ions (Ag+) as sensitizers, we synthesized a pH responsive luminescent lanthanide CP probe of Tb/GMP/Ag. The probe possesses high luminescence due to the sensitization of Ag+; While in alkaline solutions, Ag+ in Tb/GMP/Ag immediately binds to OHâ, forming Ag2O precipitation and resulting in a distinct fluorescence quenching of Tb/GMP/Ag. This probe displays high selectivity for OHâ and a broader pH detection range of 7.5-13.0. In addition, based on the high anti-interference ability in serum, we applied Tb/GMP/Ag to measure pH in undiluted human serum samples, yielding satisfactory results.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Yankai Huang, Baoxia Liu, Qi Shen, Xu Zhu, Yuanqiang Hao, Zhu Chang, Fang Xu, Peng Qu, Maotian Xu,