Organometallic red-emitting chromophores: a computational and experimental study on cyclometallated Nile Red complexes of palladium(II) and platinum(II) acetylacetonates and hexafluoroacetylacetonates.
A comparative photophysical, electrochemical and computational study of a series of Nile Red cyclopalladated and newly synthesised cycloplatinated complexes is reported. All complexes are luminescent at room temperature and the emission properties are governed by the nature of the cyclometallated dye. However, the presence of platinum(II) as metal centre decreases severely the emission quantum yield, while the electronegativity of the ancillary hexafluoroacetylacetonato ligand enhanced the emission properties of the Nile Red complexes.
Pugliese
Teresa
T
Centro di Eccelenza CEMIF.CAL;LASCAMM, CR-INSTM Unità della Calabria and Licryl, Dipartimento di Chimica, Università della Calabria, I-87036, Arcavacata di Rende (CS), Italy.
Godbert
Nicolas
N
Aiello
Iolinda
I
La Deda
Massimo
M
Ghedini
Mauro
M
Amati
Mario
M
Belviso
Sandra
S
Lelj
Francesco
F
D003116:Color; D004563:Electrochemistry; D006845:Hydrocarbons, Fluorinated / Q000737:chemistry*; D006885:Hydroxybutyrates / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D010078:Oxazines / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D010422:Pentanones / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*; D011789:Quantum Theory; D013056:Spectrophotometry, Ultraviolet
D006845:Hydrocarbons, Fluorinated; D006885:Hydroxybutyrates; D009942:Organometallic Compounds; D010078:Oxazines; D010422:Pentanones; C518705:hexafluoroacetylacetonate; C049529:acetyl acetonate; D010984:Platinum; D010165:Palladium; C044808:nile red