Pyrimidine as a Structural Fragment in Calamitic Liquid Crystals

Abstract

The effect on the physicochemical and electro-optical properties of introducing the pyrimidine ring into the molecular structure of calamitic liquid crystals is discussed and rationalized in terms of existent theories; a comparison is made with the corresponding nitrogen-containing six-membered ring derivatives and 1,4-phenylene derivatives.

Synthesis and characterization of pyrimidine-containing hexaarylbenzene derivatives

“…into HABs skeleton opened the possibility to coordinate with various metal ions, which hardly realized by full phenyl groups substituted HABs. As a heteroaryl moiety, pyrimidinyl modied HABs was least exploited although pyrimidine has high electron affinity and good coplanarity acting as an appropriate building block in construction of semiconductors, 10 liquid crystalline materials, 11 electroluminescent diodes, 12 and uorescent molecules. 13 Moreover, pyrimidine can participate in hydrogen bonding formation and also can coordinate with various metal ions.…”

Transition Metal Free Intermolecular Direct Oxidative C–N Bond Formation to Polysubstituted Pyrimidines Using Molecular Oxygen as the Sole Oxidant

“…Pyrimidines represent important building blocks in natural products, agrochemicals, pharmaceuticals, and functional materials . They also are used in a wide range of applications as anti-inflammatory, antimicrobial, and antimalarial agents, cytotoxic inhibitors, and photophysical materials .…”