A new diketopyrrolopyrrole (DPP) derivative bearing boronate group as fluorescent probe for fluoride ion
摘要:
A new diketopyrrolopyrrole (DPP) derivative bearing pinacol boronate group has been synthesized via Suzuki-Miyaura reaction under mild conditions in good yield. The product could act as a calorimetric and ratiometric fluorescent probe for fluoride ion with high sensitivity and selectivity. The recognition mechanism was attributed to unique fluoride-boron interaction, which blocked the charge transfer (CT) between DPP chromophore and the empty p orbitals of boron atoms, and proved by the fluorescence spectra, F-19 NMR spectra and H-1 NMR spectra titration experiments. (C) 2013 Elsevier Ltd. All rights reserved.
The present invention relates to polymers comprising a repeating unit of the formula (I)
their use in electronic devices. The polymers according to the invention have excellent solubility in organic solvents and excellent film-forming properties. In addition, high charge carrier mobilities and high temperature stability of the emission color are observed, if the polymers according to the invention are used in polymer light emitting diodes (PLEDs).