Horčic Martin, Svoboda Jiří, Novotná Vladimíra, Pociecha Damian, Gorecka Ewa
Department of Organic Chemistry, University of Chemistry and Technology CZ-166 28 Prague 6 Czech Republic
Institute of Physics of the Czech Academy of Sciences Na Slovance 2, CZ-182 21 Prague 9 Czech Republic
RSC Adv. 2018 Jun 22;8(41):22974-22985. doi: 10.1039/c8ra04108c. eCollection 2018 Jun 21.
A structurally new type of core-to-core dimer with a top-to-bottom linkage between the central cores of bent molecules is presented. The structure of the bent-core molecules was modified by changing the length of the spacer between the central cores and terminal chains, by changing the type of linkage groups in the bent-core arms and by variation of the terminal chain polarity - introducing polyfluoroalkyl and oligosiloxane units. Additionally, the outer phenyl ring was substituted with three alkyl chains to mimic a polycatenar system. For all compounds the mesophase behaviour and structural parameters were established to gain information about the molecular structure-mesomorphic property relationship.
本文介绍了一种结构新颖的核-核二聚体，其在弯曲分子的中心核之间存在自上而下的连接。通过改变中心核与末端链之间间隔基的长度、改变弯曲核臂中连接基团的类型以及改变末端链的极性（引入多氟烷基和低聚硅氧烷单元）来修饰弯曲核分子的结构。此外，用三条烷基链取代外苯环以模拟多链体系。对于所有化合物，确定了其介晶行为和结构参数，以获取有关分子结构-介晶性质关系的信息。
