Solvatochromic sensor array for the identification of common organic solvents

Abstract

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.

Polyelectrolyte Complexes Formed from Conjugated Polymers: Array‐Based Sensing of Organic Acids

“…Synthetic versions of such at ongue can be fairly primitive and just consist of ac ollection of dyes, for example. Anslyn et al, [4,5] Suslick et al, [6][7][8] Rotello et al [9][10][11] and other groups [12] have developed sensor fields that can be used to identify legionso fa nalytes. As ubset of such chemical tongues consistso fe lectrostatic complexes of af luorophore and aq uencher.A ne xample are the goldnanoparticle/PPE constructs by Rotello and ourselves.…”

An optoelectronic nose for identification of explosives

“… 9 , 17 In order to develop a colorimetric sensor array for explosive analytes, several dyes previously found to be broadly cross-reactive ( i.e. , in discriminating among toxic chemicals, 12 , 17 , 31 oxidants, 18 and common organic solvents) 16 were optimized; these included acid and base-treated pH indicators, Lewis acids, redox-sensitive dyes and chromogens, and solvatochromic dyes formulated with immobilization matrices for printing ( Table 1 ). In addition, several chromogenic species were added to the array to target specific analytes important to the identification of explosives, as discussed below.…”

“…Colorimetric sensor arrays combine multiple cross-reactive colorimetric sensors that probe a wide range of analyte chemical properties, 12 – 16 including Lewis and Brønsted acidity/basicity, molecular polarity, and redox properties. Using a combination of broadly reactive and specifically targeted sensors, colorimetric sensor arrays have been successfully used to differentiate even among similar analytes within diverse families, including toxic industrial chemicals, 12 , 17 oxidants, 18 complex mixtures, 19 – 22 and pathogenic bacteria and fungi.…”

Colorimetric Sensor Arrays for the Detection and Identification of Chemical Weapons and Explosives

“…Colorimetric arrays are such a versatile technique because of their ability to serve as effective detection tools for a diverse range of analytes including odorants and gases (Janzen et al., 2006; Suslick et al., 2007; Kemling and Suslick, 2011; Askim et al., 2013; Feng et al., 2010a, 2010b, 2010c; Janzen et al., 2006; Kemling and Suslick, 2011; Suslick et al., 2007), metal ions (Ariza-Avidad et al., 2014; Sener et al., 2014), nanoparticles (Mahmoudi et al., 2016), sugars (Musto and Suslick, 2010; Musto et al., 2009), amines (Bang et al., 2008; Bueno et al., 2015; Soga et al., 2013; ), anions (Feng et al., 2012; Palacios et al., 2007), organic compounds in water (Zhang and Suslick, 2005), narcotics (Baumes et al., 2010; Burks et al., 2010; Lyon et al., 2011; Smith et al., 2012), food spoilage (Huang et al., 2014; Salinas et al., 2014b), organic solvents (Rankin et al., 2015), fuels (Li et al., 2015b), and pesticides (Qian and Lin, 2015). Complex mixtures including beer, coffee, and soft drinks have also been characterized (Zhang and Suslick, 2007; Zhang et al., 2006; Suslick et al., 2010).…”