Solvatochromic sensor array for the identification of common organic solventsElectronic supplementary information (ESI) available. See DOI: 10.1039/c4an02253j

A cross-reactive colorimetric sensor array composed of solvatochromic dyes in semi-liquid matrices was used to successfully discriminate among eleven common solvents. The multidimensional array response is attributed to both chemical ( i.e. , analyte-dye interactions) and physical ( i.e. , spot blooming and refractive index alteration) changes in the sensor spot. A solvatochromic colorimetric sensor array was used to discriminate among common solvents; chemical and physical changes contribute to array response.