Supplementary Material

Journal of Solid State Electrochemistry

Mesoporous silica xerogel modified with bridged ionic silsesquioxane used to immobilize copper tetrasulfonated phthalocyanine applied to

electrochemical determination of dopamine

Monique Deon 1, Elisangela Muncinelli Caldas 1, Danielle Santos da Rosa 1, Eliana Weber de Menezes 1,

Silvio Luis Pereira Dias 1, Marcelo Barbalho Pereira 2, Tania Maria Haas Costa 1, Leliz Ticona Arenas 1,

Edilson Valmir Benvenutti 1 *

1 LSS – Instituto de Química, UFRGS, CP 15003, CEP 91501-970, Porto Alegre, RS, Brazil

2 LLO – Instituto de Física, UFRGS, CP 15015, CEP 91501-970, Porto Alegre, RS, Brazil

Schematic representation of the SiDbCl2.

Thermogravimetric curves for (a) Silica; (b) Si/Db and (c) Si/Db/CuTsPc

SEM images obtained with magnification of 20,000×. (a) Silica; (b) Si/Db and (c) Si/Db/CuTsPc

Correlation between scan rate and ΔEp.

Chronoamperometric response (i vs t) for Si/Db/CuTsPc CPE for successive additions of 0.2

mol of dopamine at different atmospheres, (a) oxygen; (b) argon and (c) open. E=+0.33 V

Plots of anodic and cathodic peak potentials (a) and current intensities (b) versus pH

Plot log v vs E: a) complete range; b) linear range v > 0.1 V.