TY - JOUR
T1 - Bis(acyl)phosphine Oxides as Stoichiometric Photo-Reductants for Copper Nanoparticle Synthesis
T2 - Efficiency and Kinetics
AU - Schmallegger, Max
AU - Grützmacher, Hansjörg
AU - Gescheidt, Georg
N1 - Funding Information:
We thank NAWI Graz and the Austria Wirtschaftsservice aws (Prototype funding for Universities and Universities of Applied Sciences; Title: “Nanocomposites for an efficient synthesis of active pharmaceutical substances”) for financial support. The authors also thank Franz Mautner and Francesco Carraro for the X‐ray powder diffraction measurement, Angela Chemelli for the DLS measurement, Raffaele Ricco for the SEM measurement and Gabriel Glotz for the FT‐IR measurement.
Publisher Copyright:
© 2022 The Authors. ChemPhotoChem published by Wiley-VCH GmbH.
PY - 2022/12
Y1 - 2022/12
N2 - Bis(acyl)phospine oxide (BAPO) photo-initiators show excellent properties in photo-induced radical polymerization. Furthermore, in aqueous or alcoholic solutions, the primary phosphorus-centred radical forms a solvent adduct, which acts as a reductant for metal cations. Here, we present the mechanism, stoichiometry and kinetics of this reduction process. Moreover, we address the controlled production of copper nanoparticles. This is accomplished using optical spectroscopy in conjunction with in-depth kinetic analysis. This study opens the door for the application of BAPOs as a light-activated reducing agents, allowing a facile, mild and controlled generation of metal nanoparticles and of metal/polymer nanocomposites.
AB - Bis(acyl)phospine oxide (BAPO) photo-initiators show excellent properties in photo-induced radical polymerization. Furthermore, in aqueous or alcoholic solutions, the primary phosphorus-centred radical forms a solvent adduct, which acts as a reductant for metal cations. Here, we present the mechanism, stoichiometry and kinetics of this reduction process. Moreover, we address the controlled production of copper nanoparticles. This is accomplished using optical spectroscopy in conjunction with in-depth kinetic analysis. This study opens the door for the application of BAPOs as a light-activated reducing agents, allowing a facile, mild and controlled generation of metal nanoparticles and of metal/polymer nanocomposites.
KW - bis(acyl)phosphine oxides
KW - chemical kinetics
KW - copper nanoparticles
KW - electron transfer
KW - photo-reduction
UR - http://www.scopus.com/inward/record.url?scp=85138032590&partnerID=8YFLogxK
U2 - 10.1002/cptc.202200155
DO - 10.1002/cptc.202200155
M3 - Article
AN - SCOPUS:85138032590
SN - 2367-0932
VL - 6
JO - ChemPhotoChem
JF - ChemPhotoChem
IS - 12
M1 - e202200155
ER -