A carbon-functionality-appended diborylacetylene available for a component of organic synthesis and OLEDs.

We present new 1,2-diborylacetylene derivatives with planar 9-oxa-10-boraanthracene termini, which display excellent stability to allow usual handling and even thermal evaporation for the preparation of thin films for OLEDs, and also undergo typical reactions of alkynes such as the Diels-Alder reaction.