Abstract
High performance, solution processable semiconductors are critical to the realization of low cost, large area electronics. We show that a signature molecular packing motif-side-chain interdigitation-correlates to high performance for a large and important class of organic semiconductors. The side chains of recently developed high performance copolymers of poly(alkylthiophenes) can and do interdigitate substantially, whereas they do not in the most common form of the extensively studied, lower performance poly (alky thiophenes). Sidechain interdigitation provides a mechanism for three-dimensional ordering; without it, poly(alkylthiophenes) are limited to small domains and poor performance. We propose the synthetic design rule that three-dimensional ordering is promoted by side-chain attachment densities sufficiently low to permit interdigitation. © 2007 American Chemical Society.
Original language | English (US) |
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Pages (from-to) | 7960-7965 |
Number of pages | 6 |
Journal | Macromolecules |
Volume | 40 |
Issue number | 22 |
DOIs | |
State | Published - Oct 30 2007 |
Externally published | Yes |
Bibliographical note
Generated from Scopus record by KAUST IRTS on 2023-02-14ASJC Scopus subject areas
- Materials Chemistry
- Organic Chemistry
- Polymers and Plastics
- Inorganic Chemistry