Enhanced Emission and Its Switching in Fluorescent Organic Nanoparticles
Gyeongsang National University · Seoul National University · +1 more institution
Abstract
A new class of organic nanoparticles (CN-MBE nanoparticles) with a mean diameter of ca. 30-40 nm, which exhibit a strongly enhanced fluorescence emission, were prepared by a simple reprecipitation method. CN-MBE (1-cyano-trans-1,2-bis-(4'-methylbiphenyl)ethylene) is very weakly fluorescent in solution, but the intensity is increased by almost 700 times in the nanoparticles. Enhanced emission in CN-MBE nanoparticles is attributed to the synergetic effect of intramolecular planarization and J-type aggregate formation (restricted excimer formation) in nanopaticles. On/off fluorescence switching for organic vapor was demonstrated with CN-MBE nanoparticles.
Citation impact
- FWCI
- 11.07
- Percentile
- 100%
- References
- 38
Authors
4- BAByeong‐Kwan AnCorresponding
Gyeongsang National University, Seoul National University, Electronics and Telecommunications Research Institute
- SKSoon‐Ki Kwon
Gyeongsang National University, Seoul National University, Electronics and Telecommunications Research Institute
- SJSang-Don Jung
Seoul National University, Electronics and Telecommunications Research Institute, Gyeongsang National University
- SYSoo Young Park
Seoul National University, Electronics and Telecommunications Research Institute, Gyeongsang National University
Topics & keywords
- Chemistry
- Nanoparticle
- Fluorescence
- Intramolecular force
- Excimer
- Photochemistry
- Chemical-mechanical planarization
- Chemical engineering