The synthesis of novel dibenzo-24-crown ether substituted nitroxides and their use as spin probes for the detection of cation guests by EPR are reported. Formation of a host-guest complex between the proposed spin probes and several cations, both organic and inorganic, was evidenced by a significant change in the value of the benzylic and nitrogen EPR hyperfine splittings upon complexation. This favorable feature provided a reliable EPR sensor that is able to selectively distinguish different cationic guests.
EPR sensing of metal and organic cations using a novel spin-labelled dibenzo-24-crown-8-ether / Gualandi, Lorenzo; Franchi, Paola; Credi, Alberto; Mezzina, Elisabetta; Lucarini, Marco. - In: PHYSICAL CHEMISTRY CHEMICAL PHYSICS. - ISSN 1463-9076. - ELETTRONICO. - 21:7(2019), pp. 3558-3563. [10.1039/c8cp04362k]
EPR sensing of metal and organic cations using a novel spin-labelled dibenzo-24-crown-8-ether
Gualandi, Lorenzo;Franchi, Paola;Credi, Alberto;Mezzina, Elisabetta;Lucarini, Marco
2019
Abstract
The synthesis of novel dibenzo-24-crown ether substituted nitroxides and their use as spin probes for the detection of cation guests by EPR are reported. Formation of a host-guest complex between the proposed spin probes and several cations, both organic and inorganic, was evidenced by a significant change in the value of the benzylic and nitrogen EPR hyperfine splittings upon complexation. This favorable feature provided a reliable EPR sensor that is able to selectively distinguish different cationic guests.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
