AI Article Synopsis
- The study discusses the creation and properties of six new amine end-capped p-phenylenevinylene trimers that are based on abietic acid.
- These compounds exhibit significant red-shifts in their absorption and emission maxima, indicating they absorb and emit light at longer wavelengths than similar compounds.
- Fast conformational relaxation occurs in the excited state (40-62 ps), allowing the molecules to adopt more planar shapes, with the duration of this process influenced by the size of the side chain and amine groups.
Article Abstract
The synthesis and photophysical properties of six new abietic acid based amine end-capped p-phenylenevinylene trimers (AECPV3) in their lowest excited singlet states are presented. The AECPV3 compounds show a large red-shift of both the absorption (25-30 nm) and emission (37-42 nm) maxima with respect to those of the corresponding trimers. Picosecond time-resolved fluorescence data reveal the presence of a fast conformational relaxation process (40-62 ps) of the initially excited compounds, leading to more planar conformers. The conformational relaxation time is proportional to the volume of both the side chain and the amine groups.
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| http://dx.doi.org/10.1002/cphc.200800374 | DOI Listing |
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