title: New Class of Bright and Highly Stable Chiral Cyclen Europium Complexes for Circularly Polarized Luminescence Applications.
abstract: High glum values of +0.30 (ΔJ = 1, 591 nm, in DMSO) and -0.23 (ΔJ = 1, 589 nm, in H2O) were recorded in our series of newly designed macrocyclic europium(III) complexes. A sterically locking approach involving a bidentate chromophore is adopted to control the formation of one stereoisomer, giving rise to extreme rigidity, high stability, and high emission intensity. The combination of a chiral substituent on a macrocyclic chelate for lanthanide ions opens up new perspectives for the further development of circulary polarized luminescent chiral tags in optical and bioapplications.
authors.affiliation: Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University , Hung Hom, Hong Kong SAR, China.|Department of Chemistry, Hong Kong Baptist University , Kowloon Tong, Hong Kong SAR, China.
authors.forename: Lixiong
authors.initials: L
authors.lastname: Dai
authors.affiliation: Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University , Hung Hom, Hong Kong SAR, China.
authors.forename: Wai-Sum
authors.initials: WS
authors.lastname: Lo
authors.affiliation: Department of Chemistry, Durham University , South Road, Durham DH1 3LE, U.K.
authors.forename: Ian D
authors.initials: ID
authors.lastname: Coates
authors.affiliation: Department of Chemistry, Durham University , South Road, Durham DH1 3LE, U.K.
authors.forename: Robert
authors.initials: R
authors.lastname: Pal
authors.affiliation: Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University , Hung Hom, Hong Kong SAR, China.
authors.forename: Ga-Lai
authors.initials: GL
authors.lastname: Law
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D000080027:Cyclams; D005063:Europium / Q000737:chemistry*; D006571:Heterocyclic Compounds / Q000737:chemistry*; D049449:Luminescence; D049408:Luminescent Agents / Q000737:chemistry*; D008163:Luminescent Measurements; D047028:Macrocyclic Compounds / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D056831:Coordination Complexes; D000080027:Cyclams; D006571:Heterocyclic Compounds; D049408:Luminescent Agents; D047028:Macrocyclic Compounds; D005063:Europium; C038072:cyclen