Octahedral iron(II) phthalocyanine complexes: multinuclear NMR and relevance as NO(2) chemical sensors.
The synthesis of new phthalocyanine iron(ii) (FePc) based coordination complexes , their structural characterization by multinuclear NMR ((1)H, (13)C, (15)N, (31)P, (57)Fe), and their use as improved sensitive and cheap optical NO(2) sensors is described. delta((15)N) and delta((57)Fe) values obtained via HMQC NMR methods show an interesting trend, the larger the chemical shift value the more the selectivity towards NO(2). Among all the sensing films prepared, the novel mixed ligand phosphite-amine [FePc(benzylamine)(P(OEt)(3)] () immobilized into AP200/19 showed the best sensitivity, reversibility (LOD and LOQ of 1.2 ppb and 4.0 ppb, respectively), and thermostability in the range of 4 to 25 degrees C.
Area de Química Orgánica, Universidad de Almería, Carretera de Sacramento s/n, 04120, Almería, Spain.
Pascual
P
Oña-Burgos
María
M
Casimiro
Ignacio
I
Fernández
Angel Valero
AV
Navarro
Jorge F
JF
Fernández Sánchez
Antonio Segura
AS
Carretero
Alberto Fernández
AF
Gutiérrez