Journal
NANOSCALE
Volume 8, Issue 15, Pages 7834-7839Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr08578k
Keywords
-
Categories
Funding
- Japan Society for the Promotion of Science [09J07245, 24760607]
- Hatakeyama Culture Foundation
- Grants-in-Aid for Scientific Research [09J07245, 24760607] Funding Source: KAKEN
Ask authors/readers for more resources
Fluorescent materials that exhibit large Stokes shifts are useful for suppressing aggregation-caused quenching. Controlling the self-trapped exciton (STE) states in organic dyes with a dimeric structure is one way of tuning Stokes shifts. However, this leads to the spectral broadening of the emissions at room temperature owing to the effects of the surrounding materials on the excited dimers. Here, we demonstrate the effects of confining organic dyes on their optical properties via the encapsulation of perylene molecules within single-walled carbon nanotubes. The encapsulated dimeric perylene exhibits fluorescence with large Stokes shifts and long lifetimes through the STE states. In particular, a noticeable emission of dimeric perylene is observed with a vibronic structure at room temperature; this resembles the Y-type emission of dimeric a-perylene crystals observed only at low temperatures. The results suggest that the isolation of the excited perylene dimers plays an important role in the occurrence of the room-temperature Y-emission.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available