Novel Tb-MOF Embedded with Viologen Species for Multi-Photofunctionality: Photochromism, Photomodulated Fluorescence, and Luminescent pH Sensing
Publication in refereed journal

香港中文大學研究人員

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摘要Tunable inorganic nodes and modifiable organic linkers enable designable functionality to come to fruition in new-type porous hybrid materials, namely metal-organic frameworks (MOFs). By using viologen-functionalized m-benzenedicarboxylate as an organic linker, a terbium-organic framework embedded with asymmetric viologen species has been constructed. The reversible photochromism from bright yellow to dark green is implemented due to the favorable spatial stack of the electron donor and acceptor. The photochromic component of the organic linkers can modulate the luminescence of the tetranuclear terbium cluster under irradiation of UV light, which is defined as photoluminescence switching behavior. The different protonation levels of uncoordinated N atoms with varying pH enable the MOF as a potential fluorescent pH sensor. Thus, multiphotofunctionality, viz. photoluminescence, photochromism as well as the derivate fluorescent response to irradiation and pH have been combined in the Tb-MOF, which is the first example in the viologen-based photochromic hybrid materials.
著者Li HY, Wei YL, Dong XY, Zang SQ, Mak TCW
期刊名稱Chemistry of Materials
出版年份2015
月份2
日期24
卷號27
期次4
出版社AMER CHEMICAL SOC
頁次1327 - 1331
國際標準期刊號0897-4756
電子國際標準期刊號1520-5002
語言英式英語
Web of Science 學科類別Chemistry; Chemistry, Physical; Materials Science; Materials Science, Multidisciplinary

上次更新時間 2020-01-12 於 00:47