Details

Autor(en) / Beteiligte

• Ji, Guanfeng
• Liu, Jingjuan
• Gao, Xuechuan
• Sun, Wei
• Wang, JinZeng
• Zhao, Shenglu
• Liu, ZhiLiang

Titel

A luminescent lanthanide MOF for selectively and ultra-high sensitively detecting Pb 2+ ions in aqueous solution

Ist Teil von

• Journal of materials chemistry. A, Materials for energy and sustainability, 2017, Vol.5 (21), p.10200-10205

Erscheinungsjahr

2017

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A luminescent lanthanide metal–organic framework [Tb(L)(H 2 O) 5 ] n solvents (Tb-MOF, H 2 L − = 3,5-dicarboxyphenol anion ligand) with a 2D network structure was synthesized. The size of the Tb-MOF single crystal can reach up to 6 mm; such large-scale single crystals of MOFs are rarely reported in the literature. Tb-MOF exhibits a strong green luminescence induced by the efficient antenna effect of the ligands. Importantly, it shows an excellent recognition ability on detecting the Pb 2+ ion, which is a noxious inorganic pollutant and causes permanent damage to human health and living environments. The perfect linear correlation between the luminescence intensity of Tb-MOF and the concentration of the Pb 2+ ions provides this crystal as a reliable and easy-to-use luminescent sensor, which can be applied in pollutant monitoring. As far as we know, it is the first example of a high-efficiency luminescent MOF sensor with millimeter level for detecting Pb 2+ ions at a very low concentration with a detection limit down to 10 −7 M.