Chemosensing of nitroaromatics with a new segmented conjugated quaterphenylene polymer
| Autor: | Marcela Almassio, Pablo Gabriel del Rosso, Raúl O. Garay |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
chemistry.chemical_classification
FLUORESCENCE QUENCHING Otras Ciencias Químicas Organic Chemistry Ciencias Químicas SEGMENTED CONJUGATED POLYMER Polymer Conjugated system Photochemistry Microstructure Biochemistry Amorphous solid NITROAROMATICS Nitrobenzene chemistry.chemical_compound chemistry Drug Discovery Methanol Fluorescent polymer FILM SENSOR Porosity CIENCIAS NATURALES Y EXACTAS |
| Popis: | A new approach for introducing porosity in fluorescent polymer films to increase sensing performance is presented. A novel segmented conjugated polymer composed of p-quaterphenylene segments tethered by their meta positions along the polymer main chain by 2,2-isopropylene spacers was synthesized. The bent nature of its microstructure generates amorphous morphologies that let analytes diffuse rapidly within the films. Fluorescence quenching studies with polymer films and methanol solutions of nitroaromatics showed high sensitivity, fast response and reversibility of the fluorescence quenching. Thus, half of the maximum quench (Q 50%) occurred with nitrobenzene at the micromolar range in less than 1 min in a reversible manner. © 2011 Elsevier Ltd. All rights reserved. Fil: del Rosso, Pablo Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina Fil: Almassio, Marcela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina Fil: Garay, Raúl Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina |
| Databáze: | OpenAIRE |
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