Efficient light amplification in the deep blue in thin films of a novel triphenylamine functionalized fluorene

摘要

We demonstrate low threshold ASE at 450 nm both under 100 fs and 3 ns pump pulses novel functionalized fluorene oligomer (F4TPA), evidencing that F4TPA is an interesting molecule for applications to low threshold blue organic lasers. The ultrafast photophysics of F4TPA is also discussed.