Mono-, Bis-, and Tris-Chelate Zn(II) Complexes with Imidazo[1,5-a]pyridine: Luminescence and Structural Dependence.

Content Provider	Europe PMC
Author	Cerrato, Valerio Volpi, Giorgio Priola, Emanuele Giordana, Alessia Garino, Claudio Rabezzana, Roberto Diana, Eliano
Editor	Ferreira, Maria João Cruz, Tiago F.C.
Copyright Year	2023
Abstract	New mono-, bis-, and tris-chelate Zn(II) complexes have been synthesized starting from different Zn(II) salts and employing a fluorescent 1,3-substituted-imidazo[1,5-a]pyridine as a chelating ligand. The products have been characterized by single-crystal X-ray diffraction; mass spectrometry; and vibrational spectroscopy. The optical properties have been investigated to compare the performances of mono-, bis-, and tris-chelate forms. The collected data (in the solid state and in solution) elucidate an important modification of the ligand conformation upon metal coordination; which is responsible for a notable increase in the optical performance. An intense modification of the emission quantum yield along the series in the solid state is observed comparing mono-, bis-, and tris-chelate adducts; independently from the anionic ligand introduced by ionic exchange.
Journal	Molecules
Volume Number	28
DOI	10.3390/molecules28093703
PubMed Central reference number	PMC10179938
Issue Number	9
PubMed reference number	37175116
e-ISSN	14203049
Language	English
Publisher	Molecular Diversity Preservation International (MDPI)
Publisher Date	2023-04-25
Access Restriction	Open
Subject Keyword	imidazo[1,5-a]pyridine luminescence fluorescence zinc complex quantum yield Stokes shift
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Medicine Chemistry Drug Discovery Pharmaceutical Science Analytical Chemistry Molecular Medicine Organic Chemistry