Dayne F Swearer, Noah M Johnson, Arben Kojtari and Hai-Feng Ji
Self-Assembling 1,4,5,8-Naphthalentetracarboxylic Diimide- Microwires for Optoelectronic Devices
The widespread use of organic electronic devices requires simple yet effective synthesis techniques to create materials with low-cost and high performance. We report the solution phase crystallization of 1,4,5,8-naphthalenetetracarboxylic diimide (NDI) microwires from dimethylsulfoxide. These microwires were characterized by means of scanning electron microscopy, thermal analysis, and infrared and fluorescence spectroscopies. The microwires were also characterized for their electrical properties and were shown to exhibit an n-type semi-conductive property as well as photoresponsive changes in conductivity. The electron mobility within the NDI microwires was determined to be lower than previous literature reports, yet the combination of photo-responsive changes in electrical conductivity may hold promise of photo-sensors, organic light-emitting diodes, and other optoelectronic devices.
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