White light emission based on a single component Sm(III) framework and a two component Eu(III)-doped Gd(III) framework constructed from 2,2′-diphenyl dicarboxylate and 1H-imidazo[4,5-f][1,10]-phenanthroline

New 1D lanthanide-organic frameworks, [Ln(dpdc)(1.5)(IP)(H2O)](n) (Ln = Sm 1, Eu 2, Gd 3; dpdc = 2,2'-diphenyldicarboxylate and IP = 1H-imidazo[4,5-f][1,10]-phenanthroline), were synthesized. White light emission was realized by two approaches: a single component Sm(III) framework and a two-component Eu(III)-doped Gd(III) framework.