Synthesis of liquid crystals derived from nitroazobenzene: a proposed multistep synthesis applied to organic chemistry laboratory classes

Quimica nova

Aquino, Rafael B. de¹  Cristiano, Rodrigo¹  Cabral, Marília Gabriela B.¹  Cristiano, Cláudia M. Z.¹ 

[1] Universidade Federal da Paraíba, João Pessoa, Brasil

关键词: liquid crystals;    multistep synthesis;    azo compounds.;   

DOI  :  10.1590/S0100-40422014000100031

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

We describe a syntheticroute consisting of five steps from aniline to obtain liquid crystal compoundsderived from nitroazobenzene. Syntheses were performed during the second halfof the semester in organic chemistry laboratory classes. Students characterizedthe liquid crystal phase by the standard melting point techniques, differentialscanning calorimetry and polarized optical microscopy. These experiments allowundergraduate students to explore fundamentally important reactions in OrganicChemistry, as well as modern concepts in Chemistry such as self-assembly andself-organization, nanostructured materials and molecular electronics.

【 授权许可】

CC BY