resumo
We report a flexible metal-organic framework (MOF), (Me2NH2)(3)[ Eu-3(MHFDA)(4)(NO3)(4)(DMF)(2)]center dot 4H(2)O center dot 2MeCN (1) (H(2)MHFDA = 9-methyl-9-hydroxy-fluorene-2,7-dicarboxylic acid), which was synthesized by a hydrothermal method and structurally characterized. This MOF has a three-dimensional framework structure with one-dimensional rhombic channels and the framework can be reversibly transformed between two phases upon release/uptake of the guest molecules. The vacuum drying process is accompanied by the loss of luminescence of the MOF, while the luminescence is recovered upon resoaking in DMF. The potential of the material for PA sensing was studied in DMF through the luminescence quenching experiments, which elucidate that this material is a potential turn-off luminescent sensory material for the selective detection of PA.
palavras-chave
SINGLE-CRYSTAL TRANSFORMATION; TUNABLE LUMINESCENCE; HYDROGEN STORAGE; SENSOR; FLUORESCENCE; EXPLOSIVES; EXCHANGE
categoria
Chemistry
autores
Li, A; Li, L; Lin, Z; Song, L; Wang, ZH; Chen, Q; Yang, T; Zhou, XH; Xiao, HP; Yin, XJ
nossos autores
Zhi Lin
Investigador Principalagradecimentos
This work was supported by the National Natural Science Foundation of China (no. 21001065, 61377019, 61136003, 21271143, 61106116 and 51173081), the Ministry of Education of China (IRT1148), Natural Science Foundation of Jiangsu Province (BM2012010), Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) (YX03001), Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP) (20113223110005), the National Basic Research Program of China (973 Program) (2012CB933301), and the Project of Guangxi Education Department (YB2014331).