Photophysical properties of cationic dyes captured in the mesoscale channels of micron-sized metal-organic framework crystals
- 주제(기타) Multidisciplinary Sciences
- 설명문(일반) [Choi, In-Hwan; Bin Yoon, Suk; Huh, Seong] Hankuk Univ Foreign Studies, Dept Chem, Yongin 17035, South Korea; [Choi, In-Hwan; Bin Yoon, Suk; Huh, Seong] Hankuk Univ Foreign Studies, Prot Res Ctr Bioind, Yongin 17035, South Korea; [Kim, Sung-Jin; Kim, Youngmee] Ewha Womans Univ, Inst Nanobio Technol, Seoul 03760, South Korea; [Kim, Sung-Jin; Kim, Youngmee] Ewha Womans Univ, Dept Chem & Nano Sci, Seoul 03760, South Korea
- 등재 SCIE, SCOPUS
- 발행기관 NATURE PUBLISHING GROUP
- 발행년도 2018
- URI http://www.dcollection.net/handler/ewha/000000151379
- 본문언어 영어
- Published As http://dx.doi.org/10.1038/s41598-018-28080-y
초록/요약
The optical properties of dye molecules in confined spaces can differ from the solution phase due to confinement effects. Pre-organized mesoscale channels of metal-organic frameworks (MOFs) are very suited for hosting various dyes, and the robust frameworks often render the encapsulated dyes with certain preferential geometries, which are different from those found in solution. Furthermore, pre-organized open channels can efficiently guide the uniform and unique spatial distribution of dye molecules in a controlled manner, which are otherwise difficult to achieve. Thus, sufficiently large dye molecules can avoid the formation of complex aggregates when captured inside open channels. In contrast, small dye molecules can form well-defined dimers or aggregates. The resulting dyeencapsulated MOFs can display unusual photophysical properties of the captured dyes. An anionic framework of In-BTB with mesoscale 3D channels is utilized for the efficient encapsulation of various cationic dyes through cation-exchange processes. Six different cationic dyes are encapsulated in the anionic framework of In-BTB, and their crystal structures are completely solved. Novel photophysical properties of these spatially distributed dye molecules in dye@In-BTBs are investigated.
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