Journal
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume 55, Issue 4, Pages 734-746Publisher
WILEY-BLACKWELL
DOI: 10.1002/pola.28421
Keywords
Synthesis; oligomers; photophysics; aggregation induced emission; piezofluorochromism
Categories
Funding
- Basque Government
- EPSRC [EP/N009908/1]
- Royal Society
- Engineering and Physical Sciences Research Council [EP/N009908/1] Funding Source: researchfish
- EPSRC [EP/N009908/1] Funding Source: UKRI
Ask authors/readers for more resources
A series of star-shaped oligofluorene molecules, each containing a TPE core, have been specifically designed and produced to show effective aggregation-induced emission (AIE). Each molecule differs either in the number of fluorene units within the arms (e. g., 1 or 4, compounds 4 and 5), or the terminal group positioned at the end of each arm (e. g., H, TMS, or TPA, compounds 4, 6, and 7). Although they are all poor emitters in solution phase they become efficient yellowgreen luminogens in the condensed state. Their AIE properties were investigated in THF/H2O mixtures, with each molecule exhibiting a clear emission enhancement at specific water contents. An all-organic distributed feedback (DFB) laser was fabricated using compound 4 as the gain material and exhibited an average threshold energy fluence of 60 +/- 6 mu J/cm(2) and emission in the green region. Furthermore, piezofluorochromism studies on a thin film of this material displayed a linear dependence of the amplified spontaneous emission (ASE) peak position on applied pressure, indicating potential applications as lasing-based pressure sensors. (C) 2016 Wiley Periodicals, Inc.
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