title: Influence of photoinduced electron transfer on lanthanide-based coordination polymer luminescence: a comparison between two pseudoisoreticular molecular networks.
abstract: The luminescent properties of two families of heteronuclear lanthanide-containing coordination polymers are compared. These families have general chemical formulas [Ln2-2xLn'2x(ip)3(H2O)9·6H2O]∞ and [Ln2-2xLn'2x(aip)2(H2O)10·(aip)·4H2O]∞ where H2ip and H2aip stand for isophthalic acid and 5-amino-isophthalic acid, respectively, and where Ln and Ln' are one of the lanthanide ions between Sm(3+) and Dy(3+). Heteronuclear compounds that belong to each family are isostructural to the already reported homonuclear compounds [Gd2(ip)3(H2O)9·6H2O]∞ and [Eu2(aip)2(H2O)10·(aip)·4H2O]∞, respectively. These two crystal structures are very similar. However, despite similar chemical formulas, similar crystal structures, and similar hydration rates, these two families of compounds present very different luminescent properties that have thus been deeply investigated. This study demonstrates that these different optical behaviors can be attributed to the presence of a PET (photoinduced electron transfer) mechanism that is only present in the amino-isophthalate-containing coordination polymers.
authors.affiliation: Université Européenne de Bretagne , 5 Boulevard Laënnec, 35000 Rennes, France.
authors.forename: Stéphane
authors.initials: S
authors.lastname: Freslon
authors.forename: Yun
authors.initials: Y
authors.lastname: Luo
authors.forename: Guillaume
authors.initials: G
authors.lastname: Calvez
authors.forename: Carole
authors.initials: C
authors.lastname: Daiguebonne
authors.forename: Olivier
authors.initials: O
authors.lastname: Guillou
authors.forename: Kevin
authors.initials: K
authors.lastname: Bernot
authors.forename: Vincent
authors.initials: V
authors.lastname: Michel
authors.forename: Xiao
authors.initials: X
authors.lastname: Fan