A sensor array for the discrimination of polycyclic aromatic hydrocarbons using conjugated polymers and the inner filter effect

Abstract

The inner filter effect and multivariate array sensing using conjugated polymers are combined for the detection and challenging discrimination of closely related polycyclic aromatic hydrocarbons.

Inorganic nanotubes with permanent wall polarization as dual photo-reactors for wastewater treatment with simultaneous fuel production

“…It is worth noting that the UV-Vis absorption spectrum of DBAN in hexane is very close to the spectrum measured in dimethylformamide (DMF), a polar organic solvent. 69 In hexane, the molar extinction coefficient at λmax (ε297nm) is found to be 1.52 × 10 5 Lmol -1 cm -1 (Figure 3a), which is similar to the value measured in DMF (1.5 x 10 5 Lmol -1 cm -1 ). 69 The increase in electron density in DBAN-loaded tubes, as compared to pristine Imo-CH3 ones (Figure 2), can be used to estimate the amount of trapped organic molecules.…”

“…69 In hexane, the molar extinction coefficient at λmax (ε297nm) is found to be 1.52 × 10 5 Lmol -1 cm -1 (Figure 3a), which is similar to the value measured in DMF (1.5 x 10 5 Lmol -1 cm -1 ). 69 The increase in electron density in DBAN-loaded tubes, as compared to pristine Imo-CH3 ones (Figure 2), can be used to estimate the amount of trapped organic molecules. However, the internal electronic density of the pristine nanotubes is not equal to zero, which suggests that they are initially occupied by some residues of the synthesis such as alcohols.…”

“…Since DBAN is an aromatic hydrocarbon, it exhibits intense characteristic UV-Vis absorption and fluorescence emission spectra in organic solvents. 69 Figure 3a shows the UV-Vis absorption spectrum of DBAN in hexane, a nonpolar aliphatic hydrocarbon. Multiple maxima in a single absorption band are attributed to electronic excitations in different vibrational sublevels.…”

Fluorescent Probes for the Supramolecular Interactions responsible for Binding of Polycyclic Aromatic Hydrocarbons to Hyperbranched Polyelectrolytes in Aqueous Media

“…These compounds occur in many natural sources, however, emissions from pyrogenic sources such as fossil fuels and industrial manufacturing lead to their unwanted introduction into the environment [11] . Thus, research efforts attempt to address the detection of these compounds, despite their uncharged and non‐polar nature, featureless chemical structure, and lack of functional groups [12] . In addition to chemical detection applications, understanding these interactions would also impact other problems, such as hydrophobic drug dissolution, modulation of drug bioavailability, and problems in separation science.…”

Using Room Temperature Phosphorescence of Gold(I) Complexes for PAHs Sensing

“…Hence, the present investigation focuses on the design and synthesis of new 1,8-naphthalimide based gold(I) complexes that display RTP and explores their use in molecular recognition processes. In particular, we are interested in sensing polycyclic aromatic hydrocarbons (PAHs) since they are well-known environmental contaminants with toxic, mutagenic, and carcinogenic properties [ 33 , 34 ].. They can be found in different natural sources such as water and soil and are produced from fossil fuels, industrial manufacturing, residential heating, food preparation, etc.…”