abstract |
Phosphorescent unsubstituted meso-position porphyrin having the formula (I): ** (See formula) ** in which M is a metal, in which each R is, independently, an atom or a group of atoms, and in wherein at least one R is -OR1, wherein R1 is an alkynyl group or includes a triazolyl group, or includes an alkylglutamate group, or terminates in a pair of alkylglutamate groups. |