PMID- 34008953 OWN - NLM STAT- MEDLINE DCOM- 20210714 LR - 20210714 IS - 1936-086X (Electronic) IS - 1936-0851 (Linking) VI - 15 IP - 6 DP - 2021 Jun 22 TI - Measuring Molecular Diffusion Through Thin Polymer Films with Dual-Band Plasmonic Antennas. PG - 10393-10405 LID - 10.1021/acsnano.1c02701 [doi] AB - A general and quantitative method to characterize molecular transport in polymers with good temporal and high spatial resolution, in complex environments, is an important need of the pharmaceutical, textile, and food and beverage packaging industries, and of general interest to the polymer science community. Here we show how the amplified infrared (IR) absorbance sensitivity provided by plasmonic nanoantenna-based surface enhanced infrared absorption (SEIRA) provides such a method. SEIRA enhances infrared (IR) absorbances primarily within 50 nm of the nanoantennas, enabling localized quantitative detection of even trace quantities of analytes and diffusion measurements in even thin polymer films. Relative to a commercial attenuated total internal reflection (ATR) system, the limit of detection is enhanced at least 13-fold, and as is important for measuring diffusion, the detection volume is about 15 times thinner. Via this approach, the diffusion coefficient and solubility of specific molecules, including l-ascorbic acid (vitamin C), ethanol, various sugars, and water, in both simple and complex mixtures (e.g., beer and a cola soda), were determined in poly(methyl methacrylate), high density polyethylene (HDPE)-based, and polypropylene-based polyolefin films as thin as 250 nm. FAU - Chen, Hao AU - Chen H AD - Department of Material Science and Engineering, Materials Research Laboratory, and Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States. FAU - Singhal, Gaurav AU - Singhal G AD - Department of Material Science and Engineering, Materials Research Laboratory, and Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States. FAU - Neubrech, Frank AU - Neubrech F AUID- ORCID: 0000-0002-5437-4118 AD - 2nd Physics Institute, Stuttgart University, Pfaffenwaldring 57, 70569 Stuttgart, Germany. AD - Max-Planck-Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany. FAU - Liu, Runyu AU - Liu R AD - Department of Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States. FAU - Katz, Joshua S AU - Katz JS AUID- ORCID: 0000-0002-0046-4062 AD - Formulation Science, Corporate Research and Development, The Dow Chemical Company, Collegeville, Pennsylvania 19426, United States. FAU - Matteucci, Scott AU - Matteucci S AD - Formulation Science, Corporate Research and Development, The Dow Chemical Company, Midland, Michigan 48674, United States. FAU - Arturo, Steven G AU - Arturo SG AD - Engineering and Process Sciences, Corporate Research and Development, The Dow Chemical Company, Collegeville, Pennsylvania 19426, United States. FAU - Wasserman, Daniel AU - Wasserman D AUID- ORCID: 0000-0003-3234-0803 AD - Department of Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States. FAU - Giessen, Harald AU - Giessen H AD - 2nd Physics Institute, Stuttgart University, Pfaffenwaldring 57, 70569 Stuttgart, Germany. FAU - Braun, Paul V AU - Braun PV AUID- ORCID: 0000-0003-4079-8160 AD - Department of Material Science and Engineering, Materials Research Laboratory, and Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20210519 PL - United States TA - ACS Nano JT - ACS nano JID - 101313589 RN - 0 (Polymers) RN - 059QF0KO0R (Water) SB - IM MH - Diffusion MH - *Polymers MH - Solubility MH - *Water OTO - NOTNLM OT - diffusion OT - nanoantennas OT - organic molecules OT - plasmonics OT - polymer OT - surface-enhanced infrared spectroscopy EDAT- 2021/05/20 06:00 MHDA- 2021/07/15 06:00 CRDT- 2021/05/19 12:18 PHST- 2021/05/20 06:00 [pubmed] PHST- 2021/07/15 06:00 [medline] PHST- 2021/05/19 12:18 [entrez] AID - 10.1021/acsnano.1c02701 [doi] PST - ppublish SO - ACS Nano. 2021 Jun 22;15(6):10393-10405. doi: 10.1021/acsnano.1c02701. Epub 2021 May 19.