Sensitive fluorescent vesicles based on the supramolecular inclusion of β-cyclodextrins with<i>N</i>-alkylamino-<scp>l</scp>-anthraquinone
作者:Tao Sun、Huacheng Zhang、Hui Yan、Jianye Li、Guanghui Cheng、Aiyou Hao、Hongwei Qiao、Feifei Xin
DOI:10.1080/10610278.2010.514614
日期:2011.5.1
Self-assembly fluorescent vesicles were designed and prepared based on the supramolecular interaction of cyclodextrins and N-alkylamino-l-anthraquinone (n-AQ). As the guest molecules, n-AQs with alkyl lengths ranging from C0 to C18 were synthesised by the direct reaction of alkylamine with l-nitroanthraquinone in N,N-dimethylformamide. Transmission electron microscopy (TEM), scanning electron microscopy, dynamic light scattering and epi fluorescence microscopy were employed to study the vesicle system in detail. The formation mechanism of the vesicles was suggested based on the results of TEM observation, UV spectrum, fluorescence spectrum, 1H NMR and simulation in the software Materials 4.3. The fluorescent vesicles show sensitive and multi-responsive properties to external stimuli. Based on these properties, we tried to use the vesicle as a new kind of fluorescence staining material for living cells. The vesicles can effectively stain the human breast cancer cells (MCF-7) and mice mononuclear macrophages (REW-264.7). This paper provides a better understanding in the design and preparation of drug delivery, biomaterials and intelligent materials.