BODIPY-containing Polymers with Ultra-low Bandgap and Ambipolar Charge Mobilities
Journal
MACROMOLECULES
Date
2020.03.04
Abstract
A series of BODIPY-containing donor-acceptor conjugated polymers were designed and synthesized with Pd-catalyzed cross-coupling reactions. The obtained polymers were carefully characterized with NMR, UV-vis and fluorescence spectros-copy, Cyclic voltammetry and Thermal gravimetric analysis, and it was found that these polymers possess strong and broad NIR absorption approaching 1600 nm, deep LUMO energy levels (< -4.0 eV) and good thermo stability. In-plane charge transport property of the obtained polymers was studied in an organic thin-film transistor (OTFT) structure exhibiting an ambipolar charge mobilities up to 10-3 cm2 V？1 s, which is one of the highest for BODIPY-containing polymers. Due to the outstanding optoelectronic properties and good stability, this work demonstrated that our BODIPY-containing polymers could be promising candidates for the applications in NIR devices and bioimaging technologies.