国产精品igao视频网网址不卡日韩,亚洲综合在线电影,亚洲婷婷丁香,黄色在线网站噜噜噜

作者: Wang HT, Pang DM, Xin H, Li M, Zhang P, Tian WJ*

來源出版物: LIQUID CRYSTALS    卷: 33    期: 4    頁: 439-443    出版年: APR 2006

摘要: The mesomorphic compound N-(4-hexyloxybenzoyl)-N'-(4'-nitrobenzoyl) hydrazine (C6-NO2), containing a dihydrazide unit in the rigid core, exhibited a highly stable SmA(1) phase (between 172.2 and 259.5 degrees C) and strong gelation ability in chloroform and other non-protonic organic solvents. Both SEM observations and X-ray diffraction data indicated that the molecules self-assembled into fibrous aggregates with a diameter of about 50 nm, and retained a head-to-tail configuration within layers. FTIR and H-1 NMR studies confirmed that intermolecular hydrogen bonding played a key role in the formation of the supra-structures, and this was considered to be the driving force. Additionally, aggregation-induced enhanced emission was observed in the organogels, and this was attributed to aggregation induced planarization and J-aggregate formation.