期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 19, 期 25, 页码 8213-8219出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201203810
关键词
fluorescence; halogens; luminescence; nanocrystals; supramolecular chemistry
资金
- National Natural Science Foundation of China
- 973 Program [2009CB939802]
- 111 Project [B07004]
- Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT) [IRT1205]
- Royal Society (Newton International Fellowship)
- Pfizer Institute of Pharmaceutical Materials Science
- Herchel Smith Fund
- EPSRC
- INTERREG IVA 2 Mers Seas Zeeen Cross-border Co-operation Programme
Multi-component organic nanocrystals that are comprised of two or more supramolecular building blocks can be used to extend the design and assembly scope of solid molecular materials. Herein, we report the use of ultrasonication to prepare halogen-bonded stilbene-based nano-cocrystals that exhibit different photoemission properties, including one- and two-phonon emission and fluorescence lifetimes, relative to those of macrodimensional crystals. The structural transformation from nano-cocrystals into nanocrystals upon heating results in a luminescence red-shift from greenish blue to yellow. The temperature-dependent ratiometric luminescence may allow such nano-cocrystals to be used as fluorescent sensors and thermosensitive materials.
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