Layer-by-Layer Assembly of a pH-Responsive and Electrochromic Thin Film
Name
Schmidt J Chem Edu 2010_OA.pdf
Size
7.58 MB
Format
Adobe PDF
Checksum (MD5)
8a55fcc1cdaa042a4e99017a56ea4d9d
Author(s)
Schmidt, Daniel J.
Pridgen, Eric M.
Hammond, Paula T.
Love, J. Christopher
Date Issued
January 2010
Journal
Journal of Chemical Education
Publisher
American Chemical Society
Citation
Schmidt, Daniel J. et al. “Layer-by-Layer Assembly of a pH-Responsive and Electrochromic Thin Film.” Journal of Chemical Education 87.2 (2010): 208–211. Web.
Version
Author's final manuscript
Abstract
This article summarizes an experiment on thin-film fabrication with layer-by-layer assembly that is appropriate for undergraduate laboratory courses. The purpose of this experiment is to teach students about self-assembly in the context of thin films and to expose students to the concepts of functional polymeric coatings. Students dip coat microscope slides and conductive glass with films containing polyaniline (PANi), a conducting polymer, and sulfonated polystyrene. Assembly of the film is characterized by visual inspection, UV−vis spectroscopy, and conductance measurements with a hand-held multimeter. Green-colored films with measurable conductance are apparent after two PANi layers. Subsequently, the students observe the pH-dependent optical properties of the films and also determine the electrochromic performance of the films using spectroelectrochemistry. The feasibility of this experiment has been tested by inclusion into an undergraduate-level polymer science laboratory with third- and fourth-year students.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1021/ed800045r
