Han Won Seok, Kang Youngjin, Lee Soo Jin, Lee Haeseong, Do Youngkyu, Lee Young-A, Jung Jong Hwa
J Phys Chem B. 2005 Nov 10;109(44):20661-4. doi: 10.1021/jp0547156.
Luminescent silica nanotubes SNT-2 (loaded with coumarion laser dye 2) and SNT-3 (loaded with anthracene laser dye 3) were prepared by sol-gel cocondensation of functional dyes and TEOS in a cholesterol-based organogel system. The emission colors of silica nanotubes were tuned by using different functional dyes. Interestingly, there is a great difference in PL spectrum of silica nanotubes loaded with functional dyes between ethanol and the solid state. In ethanol, a green light emission of SNT-2 and a bluish green light emission of SNT-3 were observed at 486 and 465 nm, respectively, because of the anchoring state between the dye and the tube, whereas in the solid state, strong blue light emissions of SNT-2 and SNT-3 were observed at 482 and 483 nm, respectively, because of the intense emission of the silica nanotube (SNT) itself rather than that of 2 and 3.
通过在基于胆固醇的有机凝胶体系中，将功能性染料与正硅酸乙酯（TEOS）进行溶胶 - 凝胶共缩聚反应，制备了负载香豆素激光染料2的发光二氧化硅纳米管SNT - 2和负载蒽激光染料3的SNT - 3。通过使用不同的功能性染料来调节二氧化硅纳米管的发射颜色。有趣的是，负载功能性染料的二氧化硅纳米管在乙醇和固态下的荧光光谱存在很大差异。在乙醇中，由于染料与纳米管之间的锚固状态，分别在486和465 nm处观察到SNT - 2的绿色发光和SNT - 3的蓝绿色发光，而在固态下，由于二氧化硅纳米管（SNT）本身的强烈发射而非染料2和3的发射，分别在482和483 nm处观察到SNT - 2和SNT - 3的强蓝光发射。
