关键词: 二茂铁, 查尔酮, 电化学, 热性质

Ferrocene-containing chalcone derivatives with benzene rings (3a~3d) or naphthalene rings (3e~3h) were synthesized and characterized. These compounds exhibited good UV-vis absorption properties. The cyclic voltammogram investigations revealed that redox-active ferrocenyl groups of 3b and 3f exhibited one-electron transfer processes and naphthalene rings instead of benzene rings had little or no effect on the formal redox potential of ferrocene. As compared to the ferrocene standard, it was difficult to lost electron for ferrocene-containing chalcone derivatives indicating their high stability. Their thermal behaviors indicated that these compounds started to decompose at about 250~260 ℃, and the melting points decreased with lengthening terminal alkyl chains. When the rigid core of molecular were mostly benzene rings, crystal polymorphic phase transitions with lengthening terminal alkyl chains was observed in the first heating cycle; whereas the melting points increased when the rigid core of molecular contained naphthalene rings, and lengthening terminal alkyl chains had little effect on the crystal phase stability. The research is supposed to provide some theoretical basis for this kind of compound using in function materials.

Key words: ferrocene, chalcone, electrochemistry, thermal behavior