Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, USA.
Org Lett. 2008 Dec 4;10(23):5333-6. doi: 10.1021/ol801918y.
Stille coupling of regioisomerically pure dibromonaphthalene bisimides (NBI) with various stannylated thiophene-based monomers yields (very) high molecular weight donor-acceptor conjugated polymers. Electrochemical and optical absorption measurements reveal that LUMO energies are essentially invariant and dictated by the NBI units, while HOMO energies are dictated by the thienyl comonomers. Optical energy gaps ranging from 1.7 to 1.1 eV are thus obtained. The polymers are also characterized by differential scanning calorimetry and fiber WAXD.
区域异构体纯二溴萘双酰亚胺（NBI）与各种锡化噻吩基单体的静默偶联得到（非常）高分子量给体-受体共轭聚合物。电化学和光吸收测量表明，LUMO 能量基本不变，由 NBI 单元决定，而 HOMO 能量由噻吩共聚单体决定。因此，得到了从 1.7 到 1.1 eV 的光学能隙。这些聚合物还通过差示扫描量热法和纤维 WAXD 进行了表征。
