Abstract
A novel near-infrared dye of DPP-BODIPY with a diketopyrrolopyrrole (DPP) central unit and two 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) flanking units has been synthesized and characterized. Its quasi-planar structure was confirmed by X-ray diffraction and panchromatic absorption from 300nm to 1000nm was exhibited both in solution and in solid state. Near-infrared emission at about 804nm and low LUMO energy level at −3.93eV are observed. Furthermore, ambipolar charge transporting properties with hole mobility of 1.5×10–5cm2V−1S−1 and electron mobility of 2×10–6cm2V−1S−1 were obtained in thin films.
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