title: Fabrication of color-tunable luminescent silica nanotubes loaded with functional dyes using a sol-gel cocondensation method.
abstract: 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.
authors.forename: Won Seok
authors.initials: WS
authors.lastname: Han
authors.forename: Youngjin
authors.initials: Y
authors.lastname: Kang
authors.forename: Soo Jin
authors.initials: SJ
authors.lastname: Lee
authors.forename: Haeseong
authors.initials: H
authors.lastname: Lee
authors.forename: Youngkyu
authors.initials: Y
authors.lastname: Do
authors.forename: Young-A
authors.initials: YA
authors.lastname: Lee
authors.forename: Jong Hwa
authors.initials: JH
authors.lastname: Jung