作者:Andreas Schultz、Sabine Laschat、Andrew P. Abbott、Martin Langner、Toby B. Reeve
DOI:10.1039/b006736i
日期:——
Donor acceptor dimers 1aâf were prepared in four steps by coupling 1-(bromohexyloxy)-9,10-anthraquinone 5c to 2-hydroxy-3,6,7,10,11-pentakis(alkyloxy)triphenylenes 2aâf. Whereas differential scanning calorimetry and optical polarizing microscopy of those derivatives 1aâd with short alkyl chains revealed only crystal to soft plastic crystal transitions followed by isotropic melting, 1e,f with long alkyl chains possess a mesophase. Weak intramolecular charge-transfer interactions in solution were deduced from NMR and UV spectra.
通过将 1-(溴己氧基)-9,10-蒽醌 5c 与 2-羟基-3,6,7,10,11-五(烷氧基)三亚苯 2aâf 偶联,分四个步骤制备了供体受体二聚体 1aâf。短烷基链衍生物 1aâd 的差示扫描量热法和光学偏光显微镜仅显示了晶体到软塑晶体的转变,随后是各向同性的熔化,而长烷基链衍生物 1e,f 则具有介相。从核磁共振和紫外光谱中推断出了溶液中微弱的分子内电荷转移相互作用。