|
作者： Chih-Chia Chenga. Zhi-Sheng Liaoa. Jyun-Jie Huanga. Duu-Jong Leeb,c,d. Jem-Kun Chene.
a
Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
b
Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
c
Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
d
R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan 32043, Taiwan
e
Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
摘要：This study is the first attempt to encapsulate fluorescent rhodamine 6G (R6G) into supramolecular micelles as a means of manipulating the fluorescence color and quantum efficiency of R6G, and provides a quick and simple route towards the fabrication of high-efficiency fluorescent nanoparticles for next-generation lighting devices and biomedical image applications. We demonstrate that these R6G-loaded micelles exhibit a uniform size distribution, tunable R6G loading capacity and a rapid R6G release rate, in combination with excellent thermal sensitivity due to dissociation of the dynamic hydrogen bonds at environmental temperatures above the lower critical solution temperature. Importantly, R6G-loaded micelles act as an effective chromophore to greatly improve the fluorescence-color stability of R6G in aqueous solution and provide a maximum quantum yield of 0.75, which is more than two times higher than that of the equivalent concentration of free R6G; these features are highly desirable yet extremely rare in conventional polymer carriers and low-molecular-weight surfactant systems.
|
