Donor–Acceptor–Donor 1H-Benzo[d]imidazole Derivatives as Optical Waveguides

Abstract

A new series of donor–acceptor–donor (D–A–D) structures derived from arylethynyl 1H-benzo[d]imidazole was synthesized and processed into single crystals with the goal of testing such crystals’ ability to act as optical waveguides. Some crystals displayed luminescence in the 550–600 nm range and optical waveguiding behavior with optical loss coefficients around 10−2 dB/μm, which indicated a notable light transport. The crystalline structure, confirmed by X-ray diffraction, contains internal channels that are important for light propagation, as we previously reported. The combination of a 1D assembly, a single crystal structure, and notable light emission properties with low losses from self-absorption made 1H-benzo[d]imidazole derivatives appealing compounds for optical waveguide applications.

Rational Design of a Multifunctional Benzothiadiazole Derivative in Organic Photonics and Electronics

“…In the present work, based on our previous experience in optical waveguides and OFETs, [14][15][16] a complete microwave-assisted synthesis of a D-π-D-A-D-π-D benzothiadiazole derivative was carried out to obtain a multifunctional material, as optical waveguide and semiconductor in OFETs, with potential applicability in novel OFEW devices.…”