Poly(3-dodecylthienylenevinylene)s: Regioregularity and Crystallinity
摘要:
A series of poly(dodecylthienylenevinylenes), C-12-PTVs-a: b, with tunable regioregularity and solubility have been synthesized using two isomeric comonomers with molar ratios from 0:10 to 5:5, and characterized by NMR spectroscopy, differential scanning calorimetry, absorption spectroscopy, cyclovoltammetry, and X-ray diffraction. For the first time, the aromatic and olefinic H-1 NMR peaks of regioregular head-tail C-n-PTVs are dearly assigned. No major difference in XRD peak intensity is observed among regiorandom and fully regioregular C-12-PTVs. V-oc of C-12-PTVs-a:b and PC60BM blend solar cells are in the range of 0.43 to 0.51 V and consistently decrease as regioregularity is reduced. C-12-PTV-3:7:PC60BM solar cells give the highest short-circuit current and practically same efficiency as that of C-12-PTV-1:9:PC60BM devices. The results suggest a new strategy to enhance processability of optoelectronic polymers without sacrificing their crystallinity and device performance.
Poly(3-dodecylthienylenevinylene)s: Regioregularity and Crystallinity
摘要:
A series of poly(dodecylthienylenevinylenes), C-12-PTVs-a: b, with tunable regioregularity and solubility have been synthesized using two isomeric comonomers with molar ratios from 0:10 to 5:5, and characterized by NMR spectroscopy, differential scanning calorimetry, absorption spectroscopy, cyclovoltammetry, and X-ray diffraction. For the first time, the aromatic and olefinic H-1 NMR peaks of regioregular head-tail C-n-PTVs are dearly assigned. No major difference in XRD peak intensity is observed among regiorandom and fully regioregular C-12-PTVs. V-oc of C-12-PTVs-a:b and PC60BM blend solar cells are in the range of 0.43 to 0.51 V and consistently decrease as regioregularity is reduced. C-12-PTV-3:7:PC60BM solar cells give the highest short-circuit current and practically same efficiency as that of C-12-PTV-1:9:PC60BM devices. The results suggest a new strategy to enhance processability of optoelectronic polymers without sacrificing their crystallinity and device performance.
Conjugation-length dependence of regioregular oligo 3-alkyl(thienylene-vinylene)s demonstrates polyene-like behaviour with weak electron–electron correlations
作者:Daniel W. Polak、Iain Andrews、George Farrow、Andrew J. Musser、Alex Auty、Dimitri Chekulaev、Julia A. Weinstein、Martin Heeney、Jenny Clark
DOI:10.1039/d3cp00362k
日期:——
demonstrate that 3-alkyl(thienylene-vinylene) oligomers form part of the polyene family. The shortest (n = 2) oligomer emits from the bright 1Bu state, while fluorescence in oligomers with n = 3, 4 is from the formally dark 2Ag state, allowed via Herzberg–Teller vibronic coupling to the nearby bright 1Bu state as described for diphenyl-polyenes. Longer oligomers and the polymer are essentially non-emissive
QUINONE COMPOUNDS FOR USE IN PHOTOVOLTAIC APPLICATION
申请人:Decampo Floryan
公开号:US20130306917A1
公开(公告)日:2013-11-21
The invention relates to a photovoltaic coating containing a mixture of organic N-type (acceptor) and P-type (donor) semiconductor compounds, which makes it possible, when selecting the donor/acceptor pair, to modulate the semiconductor properties of the photovoltaic coating so as to enable the use thereof within a photovoltaic device, wherein one of the organic semiconductors includes a quinone core.
US4730005A
申请人:——
公开号:US4730005A
公开(公告)日:1988-03-08
Poly(3-dodecylthienylenevinylene)s: Regioregularity and Crystallinity
A series of poly(dodecylthienylenevinylenes), C-12-PTVs-a: b, with tunable regioregularity and solubility have been synthesized using two isomeric comonomers with molar ratios from 0:10 to 5:5, and characterized by NMR spectroscopy, differential scanning calorimetry, absorption spectroscopy, cyclovoltammetry, and X-ray diffraction. For the first time, the aromatic and olefinic H-1 NMR peaks of regioregular head-tail C-n-PTVs are dearly assigned. No major difference in XRD peak intensity is observed among regiorandom and fully regioregular C-12-PTVs. V-oc of C-12-PTVs-a:b and PC60BM blend solar cells are in the range of 0.43 to 0.51 V and consistently decrease as regioregularity is reduced. C-12-PTV-3:7:PC60BM solar cells give the highest short-circuit current and practically same efficiency as that of C-12-PTV-1:9:PC60BM devices. The results suggest a new strategy to enhance processability of optoelectronic polymers without sacrificing their crystallinity and device performance.