Self-assembly of an oligo(biphenylene vinylene); OBPV bolaamphiphile with two polar coils of significantly long poly(propylene oxide); PPO (n = 21) at each end generated a fluorescent vesicle in apolar n-hexane. The vesicle efficiently produced trans-stilbene-like OBPV excimer emissions, as evidenced by an intense, redshifted, structured fluorescence spectrum with a long decay time of 5.0 ± 0.1 ns. An OBPV chromophore bound at both sides via a polar coil-to-coil interaction in apolar n-hexane was conducive to OBPV excimer emission, as evident from analysis of the spectroscopic data obtained from OBPVs with different PPO coil lengths (n = 13, 21, 34). Crown
Bibliographical noteFunding Information:
We thank Dr. M. Lee and Prof. D. Sohn for providing the high-quality coil-rod-coil molecules and the dynamic light scattering data, respectively. Research at GIST was funded by the APRI Research Program of GIST , from the Basic Science Research Program. Financial support was provided through the National Research Foundation , funded by the Korea government ( Ministry of Education, Science and Technology , No. 2011-0006563 ), and through the EI Project ARQ20114000114 ( 401-112-014 ) funded by the Korea Ministry of Environment . Research at Yonsei was funded by a grant from the Korea Healthcare Technology R&D Project , Ministry for Health , Welfare and Family Affairs (Grant No. A121133 ).
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry