Dithienosilolothiophene: A New Polyfused Donor for Organic Electronics
Type
ArticleKAUST Department
Chemical Science ProgramKAUST Solar Center (KSC)
Physical Science and Engineering (PSE) Division
Date
2015-08-13Online Publication Date
2015-08-13Print Publication Date
2015-08-25Permanent link to this record
http://hdl.handle.net/10754/575659
Metadata
Show full item recordAbstract
We report the synthesis of a novel pentacyclic donor moiety, dithienosilolothiophene, and its incorporation into low bandgap semiconducting polymers. The unique geometry of this new donor allowed attaching four solubilizing side chains on the same side of the fused ring system, thus ensuring sufficient solubility when incorporated into conjugated polymers while simultaneously reducing the steric hindrance between adjacent polymer chains. The optoelectronic properties of three new polymers comprising the novel pentacyclic donor were investigated and compared to structurally similar thieno[3,2-b]thienobis(silolothiophene) polymers. Organic solar cells were fabricated in order to evaluate the new materials’ potential as donor polymers in bulk heterojunction solar cells and gain further insight into how the single-sided side-chain arrangement affects the active layer blend morphology.Publisher
American Chemical Society (ACS)Journal
Macromoleculesae974a485f413a2113503eed53cd6c53
10.1021/acs.macromol.5b00941