Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5435431 | Synthetic Metals | 2017 | 6 Pages |
â¢Three approaches are used to synthesize PMP derivatives.â¢The HLGs of PMP derivatives are theoretically studied.â¢PMP derivatives with quite small HLGs are obtained.
Poly(m-phenylene) (PMP) has received great attention for its rigid-rod backbone structure, high thermal stability, and promising electronic properties due to its broken conjugation. In this paper we report a theoretical study based on density functional theory calculations on the synthesis of PMP derivatives with lower HOMO-LUMO gaps (HLGs). Our calculations reveal an effective approach to obtain PMP derivatives with lower HLGs arising from decreased LUMO levels significantly via bridging the phenyl rings by CÂ =Â X fragments (XÂ =Â S, Se).
Graphical abstractThe LUMOs, HOMOs and HLGs of PMP, PMP-2X and PMP-2CX (XÂ =Â O, S, Se).Download high-res image (180KB)Download full-size image