Title
Enhanced red emissions of europium(III) chelates in DNA-CTMA complexes
Author
Kazuki Nakamura, Haruki Minami, Amika Sagara, Natsumi Itamoto, Norihisa Kobayashi
Year
2018
Journal
Journal of Materials Chemistry C
Abstract
DNA-based functional materials are of great interest for electrical and optical device applications. In this paper, novel DNA-based photo-functional materials were fabricated by associating a DNA-lipid complex with a luminescent Eu(III) complex. Interactions between the DNA-lipid and Eu(III) complexes were investigated by photophysical measurements in both solution and film states. The emission properties of the Eu(III) complex were improved by association with the DNA-lipid complex in the film state. The emission intensity, quantum yield, and thermal stability of the Eu(III) complex hosted by the DNA-lipid matrix were superior to those of the complex in a conventional poly(methyl methacrylate) matrix. Furthermore, the Eu(III) complex in the DNA-lipid film showed circularly polarized luminescence through excitation of the ligand moiety. The chiral environment of the DNA matrix provides optical chirality to the interacting Eu(III) complex.
Instrument
J-820
Keywords
Circular dichroism, DNA structure, Chemical stability, Biochemistry, Materials