Indoloquinoxaline-based organic material enabling multi-stimuli response

A new triphenylethylene-modified indolo[2,3-[Formula: see text]]quinoxaline TPE-IQ has been synthesized by a mild Suzuki-Miyaura coupling reaction. The thermal, electrochemical, photophysical, aggregation, and acidofluorochromic and mechanofluorochromic properties were investigated. TPE-IQ shows typical solvatochromism and aggregation-induced emission enhancement features. TPE-IQ also exhibits interesting reversible acid and mechanical force-responsive properties. This work highlights the development of multi-stimuli responsive organic material containing indolo[2,3-[Formula: see text]]quinoxaline moiety.