Characteristic triboluminescence from a lanthanide coordination polymer with a non-centrosymmetric structure is reported. The lanthanide coordination polymer is composed of luminescent Eu III ions and bidentate phosphane oxides, poly[3,3Ј-bis(diphenylphosphoryl)-2,2Ј-bipyridine][tris(hexafluoroacetylacetonate)]europium (poly-Eu-BIPYPO) crystals. The coordination geometry of poly-Eu-BIPYPO is categorized as an asymmetric eight-coordinate square antiprism (8-SAP). The space group of the crystal is also classified as the [a] Division

Dedicated to Professor Jean-Claude Bünzli on the occasion of his 65th birthday Novel Eu III complexes with bidentate phosphine oxide ligands containing a bipyridine framework, i.e., [3,3'-bis