Electron transport in a sequentially doped naphthalene diimide polymer. Issue 6 (12th August 2020)

• Record Type: Journal Article
• Authors: Al Kurdi, Khaled; Gregory, Shawn A.; Jhulki, Samik; Conte, Maxwell; Barlow, Stephen; Yee, Shannon K.; Marder, Seth R.
• Is Part Of: Materials advances. Volume 1:Issue 6(2020)
• Page Start: 1829
• Page End: 1834
• Publication Date: 2020-08-12
• Subjects: 620.11
• DOI: 10.1039/d0ma00406e
• Languages: English
• ISSNs: 2633-5409

Abstract

Abstract : Sequential doping of PNBS, notably with (N-DMBI)2, is studied using UV-vis.-NIR spectroscopy, GIXRD, and variable-temperature conductivity measurements. Abstract : The effects of sequential n-doping on a high-electron-mobility naphthalene-diimide-based copolymer poly[( N, N ′-bis(2-decyltetradecyl)-naphthalene-1, 8:4, 5-bis(dicarboximide)-2, 6-diyl)-(selenophene-2, 5-diyl)-(benzo[ c ][1, 2, 5]thiadiazole-4, 7-diyl)-(selenophene-2, 5-diyl)], PNBS, are reported. Grazing-incidence XRD measurements show that PNBS doped with 2, 2′-bis(4-(dimethylamino)phenyl)-1, 1′, 3, 3′-tetramethyl-2, 2′, 3, 3′-tetrahydro-1 H, 1′ H -2, 2′-bibenzo[ d ]imidazole, (N-DMBI)2, has increased order relative to both the pristine polymer and a film doped with ruthenium pentamethylcyclopentadienyl mesitylene dimer. Films of PNBS optimally doped with (N-DMBI)2 show electrical conductivities approaching 2 mS cm −1 in air. Temperature-dependent electrical measurements suggest that the polaronic charge carriers are highly localized, which is consistent with the moderate conductivity values obtained.