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Breakthrough in research on optical MOF thin film materials

release time:2020-01-07

HC Plastics News: Recently, a research team led by Zhang Jian, a researcher at the State Key Laboratory of Structural Chemistry in the Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, successfully synthesized an optical MOF film material loaded with ultra-small carbon nanolattices. ????The efficient and economical preparation of functional composite thin film materials is one of the problems in the development of new thin film materials, especially the preparation and application of optical functional composite films still need vigorous development. Breakthrough in research on optical MOF thin film materials Breakthrough in research on optical MOF thin film materials ????Carbon nanodots (CDs) have a wide range of applications in catalysis, fluorescence, sensing, and biological imaging due to their high chemical stability, low toxicity, good biocompatibility and excellent photophysical properties. The research team innovatively used the significant difference between the carbonization temperature of MOF materials and glucose molecules to achieve the composite of carbon nanodots and MOF materials. Generally, the carbonization temperature of MOF materials needs to exceed 500 degrees Celsius, while the carbonization temperature of glucose molecules is about 200 degrees Celsius. Therefore, the MOF material loaded with glucose molecules maintains the skeleton structure unchanged at 200 degrees Celsius, but the carbonization behavior of glucose is limited to the carbon nanodots in the pores of the MOF, thereby obtaining a uniformly dispersed CDs @ MOF composite material. ????The size of carbon nanodots can be adjusted by selecting MOFs with different pore structures. The prepared carbon nanodot-supported MOF film not only has good morphology and optical transparency, but also exhibits photoluminescence effect and light limiting effect with adjustable band. This research work has achieved the controlled synthesis of ultra-small carbon nano-matrixes in MOF templates, and developed a new CDs @ MOF composite optical limiting material, published in Angew.Chem.Int.Ed. 2017 , DOI: 10.1002 / anie.201702162). ????At the same time, the research team prepared a porphyrin-based PIZA-1 film material (Small, 2017, 1,1604035) that can efficiently and selectively detect volatile organic compounds, and explored the growth orientation, thickness, and modified substrate of MOF films. Influence of film properties, developed a series of film materials with chiral resolution and catalytic functions (Chem.Commun., 2017, 53, 1470; ACSAppl. Mater. Interfaces, 2017, 9, 7259; Inorg. Chem., 2017, 56, 3526; Nanoscale 2017, DOI: 10.1039 / C7NR02284K). ????This research won the Chinese Academy of Sciences' Strategic Leading Science and Technology Special Project (Class B), the National Foundation of Inorganic-Organic Hybrid Functional Materials Innovation Group, the National Outstanding Youth Fund, the National Natural Science Foundation Youth Project, the Fujian Natural Science Foundation Project and Structure Funded by the Excellent Youth Project of the State Key Laboratory of Chemistry (Gu Zhigang). Editor-in-chief: Wang Ning 12