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- Title
Synthesis of Alternating Donor–Acceptor Ladder‐Type Molecules and Investigation of Their Multiple Charge‐Transfer Pathways.
- Authors
Cai, Zhengxu; Zhang, Na; Awais, Mohammad A.; Filatov, Alexander S.; Yu, Luping
- Abstract
Abstract: We describe the synthesis as well as the optical and charge‐transport properties of a series of donor–acceptor (D‐A) ladder‐type heteroacenes. These molecules are stable, soluble, and contain up to 24 fused rings. Structural analyses indicated that the backbones of S 10r and Se 10r are bent in single crystals. The three 10‐ring heteroacenes were functionalized with thiol anchoring groups and used for single‐molecular conductance measurements. The highest conductance was observed for molecular wires containing a benzoselenadiazole (BSD) moiety, which exhibits the narrowest band gap. Multiple charge‐transport pathways were observed in molecular wires containing either benzothiadiazole (BTD) or BSD. The conductance is a complex function of both energy gap and orbital alignment.
- Subjects
ELECTRON donor-acceptor complexes; CHARGE transfer; CHEMICAL synthesis; MOLECULAR structure; ACENES; THIADIAZOLES
- Publication
Angewandte Chemie, 2018, Vol 130, Issue 22, p6552
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201713323