Triaryl-1,4-diamine-based polysquaraines: effect of co-solvent and monomer insertion on optoelectronic properties

Abstract

Emission of the synthesized polysquaraine (left) and CIE 1931 color space chromaticity diagram of the corresponding OLED (right).

Squaraine-Based Optical Sensors: Designer Toolbox for Exploring Ionic and Molecular Recognitions

“…Squaryl chloride K could be efficiently produced upon the treatment of squaric acid with chlorinating agents, such as thionyl chloride [39,40], and, typically, as-prepared K could be used for subsequent steps, without any purification. The reaction between K and Nu N 1-H or Nu C 1-H nucleophiles produces the corresponding semisquaric acid chlorides L [41] and M [42][43][44][45], respectively.…”

Upgrading the chemistry of π-conjugated polymers toward more sustainable materials

“…In addition, polysquaraines were also obtained after chlorination of the squaric acid monomer through the alcohol functions in order to evidence the ratio of 1,3 vs 1,2 squaraine subunits' linkages. 49 43 with permission from The Royal Society of Chemistry)…”

“…Scheme 10: Synthesis of polysquaraine (adapted from Ref. 45 with permission of John Wiley and Sons, Inc.) 47,48,49 Scheme 11: Aldol condensation of isoindigo-based polymer (Reproduced from Ref. 50 with permission from The Royal Society of Chemistry)…”