【理学院】Size- and Shape-controlled Liquid Phase Synthesis of Inorganic Nanoparticles and Application to Organic-inorganic Hybrid Liquid-crystalline Materials

International Soft Matter and Nanomaterials Seminar Series

国际软物质及纳米材料系列讲座

报告题目：Size- and Shape-controlled Liquid Phase Synthesis of Inorganic Nanoparticles and Application to Organic-inorganic Hybrid Liquid-crystalline Materials

报告人：Kiyoshi Kanie教授（日本东北大学Tohoku University）

地点：校行政楼一楼报告厅

时间：2015年4月7日（周二）下午3点半

讲座摘要：

Organic-inorganic hybrid liquid crystals (LC) that we have developed are nanoparticle-based functional material showing thermotropic LC behavior and self-organization properties. For example, hybridization of organic amino-containing LCs with monodisperse needle-like TiO₂ nanoparticles (NPs) lead to the introduction of thermotropic liquid-crystallinity.¹ We also succeeded in introducing thermotropic liquid crystallinity into fine monodisperse a-Fe₂O₃ NPs.² Recently, we have also developed LC organic-inorganic hybrid dendrimers,³ where the dendrimer has a spherical gold NP at its core. Dense surface modification of spherical gold NPs with LC dendron was found to result in a hybrid exhibiting a thermotropic LC phase with a simple cubic structure. Furthermore, we focus on imparting such ability to self-organize onto monodisperse quantum dots (QDs) NPs. As a result, dendron-modified QDs were obtained, displaying ordered superlattices. Such structures were found to exhibit unusual photoluminescence behaviour. The details will be discussed in the seminar.

References

[1] K. Kanie, T. Sugimoto, J. Am. Chem. Soc., 125, 10518 (2003).

[2] K. Kanie, A. Muramatsu, J. Am. Chem. Soc., 127, 11578 (2005).

[3] K. Kanie, M. Matsubara, X. Zeng, F. Liu, G. Ungar, H. Nakamura, A. Muramatsu, J. Am. Chem. Soc., 134, 808 (2012).