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Extreme electron polaron spatial delocalization in ?-conjugated materials #MMPMID26512097
Rawson J; Angiolillo PJ; Therien MJ
Proc Natl Acad Sci U S A 2015[Nov]; 112 (45): 13779-83 PMID26512097show ga
?-Conjugated organic molecules offer an added dimension to traditional inorganic materials in transistors, solar cells, and light-emitting diodes. The spatial extent over which charges are spread within an organic structure is associated with a material?s suitability for these applications. Here, using two experimental spectroscopic techniques, coupled with computational analysis, we determine the distribution of negative charges within designed organic molecules comprised of multiple ?-conjugated repeat units. We find that negative charges in these highly conjugated organic structures are dispersed over greater areas relative to any other organic material that has been studied to date. This discovery is significant, as the design of organic materials that adeptly accommodate and transmit negative charges remains a significant challenge in materials science.