New luminophors based on the binuclear helicates of d-METALS with BIS(DIPYRRIN)S
Quantum yield
DOI:
10.1016/j.dyepig.2014.10.002
Publication Date:
2014-10-12T17:08:06Z
AUTHORS (7)
ABSTRACT
Abstract The review highlights recent advances devoted to new luminophores based on d -metal complexes of bis(dipyrrin)s of [M 2 L 2 ]. The [M 2 L 2 ] helicates possess intense absorption in a visible spectrum region. The [Zn 2 L 2 ], [Cd 2 L 2 ] and [Hg 2 L 2 ] helicates are fluorophores with the most intense fluorescence in nonpolar solvents. The fluorescence of [M 2 L 2 ] bis(dipyrrinate)s decreases by two-fold in aromatic solvents and becomes close to zero in electron-donor media. The fluorescence is increased in a series of 2,2′-, 2,3′-, 3,3′-bis(dipyrrinate)s with similar complexing agent and in a series of [Hg 2 L 2 ], [Cd 2 L 2 ], [Zn 2 L 2 ] complexes with the same ligand. Upon freezing and cooling of [Zn 2 L 2 ] in ethanol from 300 to 77 K the fluorescence quantum yield of [Zn 2 L 2 ] is increased up to 100 times. The [Zn 2 L 2 ] complexes are able to generate the stimulated emission induced at the 550–560 nm region in nonpolar solvents upon excitation by second harmonic Nd:YAG laser.
SUPPLEMENTAL MATERIAL
Coming soon ....
REFERENCES (61)
CITATIONS (41)
EXTERNAL LINKS
PlumX Metrics
RECOMMENDATIONS
FAIR ASSESSMENT
Coming soon ....
JUPYTER LAB
Coming soon ....