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Organic Chemistry and Your Cellphone

Organic Light-Emitting Diodes



Co Authors:

Courtney E. Meyet
Department of Chemistry
University of California, Riverside
cmeye002@ucr.edu

Richard J. Hooley
Department of Chemistry
University of California, Riverside
richard.hooley@ucr.edu

Abstract:

This case study guides students through a systematic exploration of the synthesis and properties of poly(phenylene vinylene) (PPV), the first conjugated polymer applied as an organic light-emitting diode (OLED). Students determine how to synthesize a conducting polymer from basic organic chemicals, how to vary its structure to alter the color of emitted light (essential for the creation of color displays), and determine how and why it functions. A classic article from Nature is used to introduce students to the synthesis and properties of PPV, while extracts from more popular sources are used to explain the concepts of electroluminescence and the construction of OLEDs. This case study is designed for a second semester/second quarter organic chemistry course, and is generally presented in the middle of the course. Students will need to be familiar with nucleophilic substitution and elimination, conjugation and UV spectroscopy, aromaticity, electrophilic aromatic substitution, and polymers. An optional PowerPoint presentation, available from the Supplementary Materials tab, can be used to provide a framework for running the class activity, which involves answering questions in small groups.

Objectives:
  • Highlight the relevance of chemistry to current world issues.
  • Apply basic organic chemistry knowledge to complex, multi-faceted problems.
  • Develop the ability to critically analyze primary literature and draw conclusions based on the data and evidence contained therein.
  • Develop the ability to communicate scientific and technical concepts in both written and verbal form to both technical and non-technical audiences.
  • Assist in the development of fundamental organic chemistry skills such as synthesis, mechanism and orbital symmetry.
Keywords: Organic reactions; luminescence; organic light-emitting diodes; organic materials; polymers
Topical Area: Science and the media
Educational Level: Undergraduate lower division
Formats: PDF
Type/Method: Analysis (Issues), Discussion, Journal Article
Language: English
Subject Headings: Organic Chemistry  
Date Posted: 9/16/2013
Date Modified: N/A
Copyright: Copyright held by the National Center for Case Study Teaching in Science, University at Buffalo, State University of New York. Please see our usage guidelines, which outline our policy concerning permissible reproduction of this work.

Teaching Notes


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Supplemental Materials


The optional PowerPoint presentation can be used to provide a framework for running the class activity, which involves answering questions in small groups.

  Oled Power Point



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