Premium
Near Infrared Circularly Polarized Luminescence From Water Stable Organic Nanoparticles Containing a Chiral Yb(III) Complex
Author(s) -
Cavalli Enrico,
Nardon Chiara,
Willis Oliver G.,
Zinna Francesco,
Di Bari Lorenzo,
Mizzoni Silvia,
Ruggieri Silvia,
Gaglio Salvatore C.,
Perduca Massimiliano,
Zaccone Claudio,
Romeo Alessandro,
Piccinelli Fabio
Publication year - 2022
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202200574
Subject(s) - luminescence , nanoparticle , plga , lanthanide , solubility , materials science , ligand (biochemistry) , solvent , photochemistry , nanotechnology , chemical engineering , chemistry , ion , organic chemistry , optoelectronics , biochemistry , receptor , engineering
We report the first example of very efficient NIR Circularly Polarized Luminescence (CPL) (around 970 nm) in water, obtained thanks to the combined use of a chiral Yb complex and of poly lactic‐co‐glycolic acid (PLGA) nanoparticles. [Yb L (tta) 2 ]CH 3 COO ( L =N, N’‐bis(2‐pyridylmethylidene)‐1,2‐( R,R + S,S ) cyclohexanediamine and tta=2‐thenoyltrifluoroacetonate) shows good CPL in organic solvents, because the tta ligands efficiently sensitize Yb NIR luminescence and the readily prepared chiral ligand L endows the complex with the necessary dissymmetry. PLGA nanoparticles incorporate the complex and protect the metal ion from the intrusion of solvent molecules, while ensuring biocompatibility, water solubility and stability to the complex. Hydrophilic NIR‐CPL optical probes can find applications in the field of NIR‐CPL bio‐assays.