| Texto completo | |
| Autor(es): |
Carter, Korey P.
[1]
;
Zulato, Cecilia H. F.
[2, 1]
;
Rodrigues, Emille M.
[2]
;
Pope, Simon J. A.
[3]
;
Sigoli, Fernando A.
[2]
;
Cahill, Christopher L.
[1]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] George Washington Univ, Dept Chem, Washington, DC 20052 - USA
[2] Univ Estadual Campinas, UNICAMP, Inst Chem, Lab Funct Mat, BR-13083970 Campinas, SP - Brazil
[3] Cardiff Univ, Sch Chem, Cardiff CF10 3AT, S Glam - Wales
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | DALTON TRANSACTIONS; v. 44, n. 36, p. 15843-15854, 2015. |
| Citações Web of Science: | 19 |
| Resumo | |
Eleven new lanthanide (Ln = Nd-Lu)-thiophene-2,5-dicarboxylic acid (25-TDC)-2,2':6',2 `'-terpyridine (terpy) coordination polymers (1-11) which employ a dual ligand strategy have been synthesized hydrothermally and structurally characterized by single crystal and powder X-ray diffraction. Two additional members of the series (12 and 13) were made with Ce3+ and Pr3+ and characterized via powder X-ray diffraction only. The series is comprised of three similar structures wherein differences due to the lanthanide contraction manifest in Ln(3+) coordination number as well as the number of bound and solvent water molecules within the crystal lattice. Structure type I (Ce3+-Sm3+) contains two nine-coordinate Ln(3+) metal centers each with a bound water molecule. Structure type II (Eu3+-Ho3+) features a nine and an eight coordinate Ln(3+) metal along with one bound and one solvent water molecule. Structure type III (Er3+-Lu3+) includes two eight-coordinate Ln(3+) metal centers with both water molecules residing in the lattice. Assembly into supramolecular 3D networks via p-p interactions is observed for all three structure types, whereas structure types II and III also feature hydrogen-bonding interactions via the well-known C-H center dot center dot center dot O and O-H center dot center dot center dot O synthons. Visible and near-IR luminescence studies were performed on compounds 1, 2, 10, and 13 at room temperature. As a result characteristic near-IR luminescent bands of Pr3+, Nd3+, Sm3+, and Yb3+ as well as visible bands of Sm3+ were observed. (AU) | |
| Processo FAPESP: | 09/54066-7 - Laboratório Multiusuário de Espectroscopia Óptica Avançada |
| Beneficiário: | Yoshitaka Gushikem |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Equipamentos Multiusuários |