000129359 001__ 129359
000129359 005__ 20241125101145.0
000129359 0247_ $$2doi$$a10.1002/anie.202309928
000129359 0248_ $$2sideral$$a135523
000129359 037__ $$aART-2023-135523
000129359 041__ $$aeng
000129359 100__ $$0(orcid)0000-0002-8932-9085$$aConcellón, Alberto$$uUniversidad de Zaragoza
000129359 245__ $$aDetection of Per- and Polyfluoroalkyl Substances (PFAS) by Interrupted Energy Transfer
000129359 260__ $$c2023
000129359 5060_ $$aAccess copy available to the general public$$fUnrestricted
000129359 5203_ $$aThe ubiquitous presence of per‐ and polyfluoroalkyl substances (PFAS) in aqueous environments has aroused societal concern. Nonetheless, effective sensing technologies for continuous monitoring of PFAS within water distribution infrastructures currently do not exist. Herein, we describe a ratiometric sensing approach to selectively detect aqueous perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) at concentrations of μg ⋅ L−1. Our method relies on the excitonic transport in a highly fluorinated poly(p‐phenylene ethynylene) to amplify a ratiometric emission signal modulated by an embedded fluorinated squaraine dye. The electronic coupling between the polymer and dye occurs through overlap of π‐orbitals and is designed such that energy transfer is dominated by an electron‐exchange (Dexter) mechanism. Exposure to aqueous solutions of PFAS perturbs the orbital interactions between the squaraine dye and the polymer backbone, thereby diminishing the efficiency of the energy transfer and producing a “polymer‐ON/dye‐OFF” response. These polymer/dye combinations were evaluated in spin‐coated films and polymer nanoparticles and were able to selectively detect PFAS at concentrations of ca. 150 ppb and ca. 50 ppb, respectively. Both polymer films and nanoparticles are not affected by the type of water, and similar responses to PFAS were found in milliQ and well water.
000129359 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000129359 590__ $$a16.1$$b2023
000129359 592__ $$a5.3$$b2023
000129359 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b14 / 231 = 0.061$$c2023$$dQ1$$eT1
000129359 593__ $$aChemistry (miscellaneous)$$c2023$$dQ1
000129359 593__ $$aCatalysis$$c2023$$dQ1
000129359 594__ $$a26.6$$b2023
000129359 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000129359 700__ $$aSwager, Timothy M.
000129359 7102_ $$12013$$2765$$aUniversidad de Zaragoza$$bDpto. Química Orgánica$$cÁrea Química Orgánica
000129359 773__ $$g62, 47 (2023), e202309928 [ 6 pp.]$$pAngew. Chem. (Int. ed.)$$tAngewandte Chemie (International ed.)$$x1433-7851
000129359 8564_ $$s778811$$uhttps://zaguan.unizar.es/record/129359/files/texto_completo.pdf$$yVersión publicada
000129359 8564_ $$s3207099$$uhttps://zaguan.unizar.es/record/129359/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000129359 909CO $$ooai:zaguan.unizar.es:129359$$particulos$$pdriver
000129359 951__ $$a2024-11-22-12:04:18
000129359 980__ $$aARTICLE