TY - JOUR
T1 - A fluorescent Eu(III) MOF for highly selective and sensitive sensing of picric acid
AU - Chen, Qianqian
AU - Cheng, Jiahui
AU - Wang, Jin
AU - Li, Liang
AU - Liu, Zhipeng
AU - Zhou, Xinhui
AU - You, Yujian
AU - Huang, Wei
N1 - Publisher Copyright:
© 2018, Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2019/2/1
Y1 - 2019/2/1
N2 - A metal-organic framework [Eu 3 L 3 (CH 3 COO) 2 (H 2 O) 2 (μ 3 -OH)]•3DMF, (EuL, H 2 L=9H-carbazole-2,7-dicarboxylic acid, DMF=N,N-dimethylformamide) has been synthesized under solvothermal conditions and structurally characterized. In EuL, Eu 6 O 8 clusters are four-bridged by carboxylates to form parallel-aligned Eu–O–C chains, which are further linked by the carbazole moieties of L 2− ligands to form the three-dimensional framework with rhombic channels. The EuL material with characteristic emission of Eu 3+ ion exhibits significant luminescence quenching response for picric acid (PA) and the linear Stern-Volmer plot was observed in the concentration range of 0.05–0.15 mM with K sv of 98074 M −1 . As far as we know, this K sv is among the highest values for COFs and MOFs in detection of PA. The excellent anti-interference ability and repeatability were also verified by experiments. Lastly, we investigated the luminescence quenching mechanism in the EuL sensing system.
AB - A metal-organic framework [Eu 3 L 3 (CH 3 COO) 2 (H 2 O) 2 (μ 3 -OH)]•3DMF, (EuL, H 2 L=9H-carbazole-2,7-dicarboxylic acid, DMF=N,N-dimethylformamide) has been synthesized under solvothermal conditions and structurally characterized. In EuL, Eu 6 O 8 clusters are four-bridged by carboxylates to form parallel-aligned Eu–O–C chains, which are further linked by the carbazole moieties of L 2− ligands to form the three-dimensional framework with rhombic channels. The EuL material with characteristic emission of Eu 3+ ion exhibits significant luminescence quenching response for picric acid (PA) and the linear Stern-Volmer plot was observed in the concentration range of 0.05–0.15 mM with K sv of 98074 M −1 . As far as we know, this K sv is among the highest values for COFs and MOFs in detection of PA. The excellent anti-interference ability and repeatability were also verified by experiments. Lastly, we investigated the luminescence quenching mechanism in the EuL sensing system.
KW - europium
KW - metal-organic frameworks
KW - picric acid
KW - sensor
UR - http://www.scopus.com/inward/record.url?scp=85059299737&partnerID=8YFLogxK
U2 - 10.1007/s11426-018-9367-y
DO - 10.1007/s11426-018-9367-y
M3 - 文章
AN - SCOPUS:85059299737
SN - 1674-7291
VL - 62
SP - 205
EP - 211
JO - Science China Chemistry
JF - Science China Chemistry
IS - 2
ER -