OAc–-Dependent Self-Assembly of Luminescent Homoleptic [Ln9(OH-Salen)5(OH)4(OAc)10] and {[Ln6(OH-MeO-Salen)5(OH)(OAc)2(H2O)2]·(OAc)} Complexes

• DOI: 10.1021/acs.cgd.7b01490
• Publication Date: 2017-12-28T17:46:47Z
• Authors: Guorui Fu; Baoning Li; Jiahao Guo; Lin Liu; Kaimeng Zhang; Weixu Feng; Xingqiang Lü
• Keywords: Homoleptic

Two series of OAc–-dependent unique homoleptic nonanuclear [Ln9(L1)3(HL1)2(μ3-OH)4(OAc)10] (1–7) and hexanuclear {[Ln6(L2)4(HL2)(μ3-OH)(OAc)2(H2O)2]·(OAc)} (8–14) are obtained from the self-assembly partially deprotonated OH-H2Salen ligand H3L1 (N,N′-bis(salicylidene)(propylene-2-ol)-1,3-diamine) or OH-MeO-H2Salen H3L2 (N,N′-bis(3-methoxysalicylidene)(propylene-2-ol)-1,3-diamine) with Ln(OAc)3 (Ln = La, Eu, Tb, Gd, Nd, Yb, Er), respectively. The result their photophysical properties shows that sensitization for single-component near-white-light complex 2, efficient Eu3+-centered red-light (ΦLEu 13.4%) 9, Tb3+-centered yellowish-green-light (ΦLTb 8.1% 21.3%) complexes 3 10, Nd3+- Yb3+-centered NIR luminescence (η ΦLLn/ΦLnLn 67–75% 76–85%) 5–6 12–13, arose ligands' 3π–π* excited state, due to effective intramolecular energy transfer multiple Ln3+-to-Ln3+ electron-communications.