Journal
SCIENCE CHINA-CHEMISTRY
Volume 62, Issue 8, Pages 987-993Publisher
SCIENCE PRESS
DOI: 10.1007/s11426-019-9485-4
Keywords
dual-band lasing; metal-organic frameworks; organic dye; Fabry-Perot cavity
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Funding
- National Natural Science Foundation of China [U1609219, 51432001, 51632008, 61721005]
- Zhejiang Provincial Natural Science Foundation [LD18E020001]
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Multi-band microlasers based on single microcrystalline materials with Fabry-Perot (F-P) cavities are critically and technologically essential. Here, we demonstrate simultaneous dual-band lasing output (615 and 685 nm) in metal-organic frameworks (MOFs) and organic dyes hybrid single crystals, which support F-P resonances. Through a two-step assembly strategy, two different types of cationic pyridinium hemicyanine dye molecules can be encapsulated into the channel pores of anionic bio-MOF-1-2Me successfully. In addition, the employment of the host-guest system significantly increases the dye loading, enhances luminescent efficiency, and diminishes the aggregation-caused quenching (ACQ) effect in the resultant MOFs/dye composites. This finding not only combines the characteristic of MOFs materials with excellent luminescent properties of organic dyes, but also points out a simple and promising strategy to design multi-band microlasers based on F-P mechanism, opening a low-cost avenue for the rational design of miniaturized lasers in the future.
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