Visible-light sensitized luminescent europium(III)-β-diketonate complexes: bioprobes for cellular imaging.
Visible-light sensitized luminescent europium(III) molecular materials are of considerable importance because their outstanding photophysical properties make them well suited as labels in fluorescence-based bioassays and low-voltage driven pure red-emitters in optoelectronic technology. One challenge in this field is development of visible-light sensitizing ligands that can form highly emissive europium(III) complexes with sufficient stability and aqueous solubility for practical applications. Indeed, some of the recent reports have demonstrated that the excitation-window can be shifted to longer-wavelengths in europium(III)-β-diketonate complexes by appropriate molecular engineering and suitably expanded π-conjugation in the complex molecules. In this review, attention is focused on the latest innovations in the syntheses and photophysical properties of visible-light sensitized europium(III)-β-diketonate complexes and their application as bioprobes for cellular imaging. Furthermore, luminescent nanomaterials derived from long-wavelength sensitized europium(III)-β-diketonate complexes and their application in life sciences are also highlighted.
Chemical Sciences and Technology Division, CSIR-Network of Institutes for Solar Energy, National Institute for Interdisciplinary Science & Technology (NIIST), Thiruvananthapuram-695 019, India.
M L P
ML
Reddy
V
V
Divya
Rani
R
Pavithran
D000818:Animals; D015374:Biosensing Techniques; D056831:Coordination Complexes / Q000737:chemistry* / Q000378:metabolism; D005063:Europium / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry / Q000378:metabolism; D007659:Ketones / Q000737:chemistry*; D008027:Light; D008856:Microscopy, Fluorescence; D032446:Myoblasts / Q000166:cytology; D037742:Nanotubes, Carbon / Q000737:chemistry
D056831:Coordination Complexes; D005456:Fluorescent Dyes; D007659:Ketones; D037742:Nanotubes, Carbon; D005063:Europium