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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.
- Source :
-
Crystal Growth & Design . 2/7/2018, Vol. 18 Issue 2, p1020-1029. 10p. - Publication Year :
- 2018
-
Abstract
- 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 of the partially deprotonated OH-H2Salen ligand H3L1 (N,N′-bis(salicylidene)(propylene-2-ol)-1,3-diamine) or OH-MeO-H2Salen ligand H3L2 (N,N′-bis(3-methoxysalicylidene)(propylene-2-ol)-1,3-diamine) with Ln(OAc)3 (Ln = La, Eu, Tb, Gd, Nd, Yb, or Er), respectively. The result of their photophysical properties shows that the sensitization for single-component near-white-light of complex 2, efficient Eu3+-centered red-light (ΦLEu = 13.4%) of complex 9, or or Tb3+-centered yellowish-green-light (ΦLTb = 8.1% and 21.3%) of complexes 3 and 10, and Nd3+- or Yb3+-centered NIR luminescence (η = ΦLLn/ΦLnLn = 67–75% and 76–85%) for complexes 5–6 and 12–13, arose from the ligands’ 3π–π* excited state, due to effective intramolecular energy transfer and multiple Ln3+-to-Ln3+ electron-communications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15287483
- Volume :
- 18
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Crystal Growth & Design
- Publication Type :
- Academic Journal
- Accession number :
- 128098929
- Full Text :
- https://doi.org/10.1021/acs.cgd.7b01490