title: Ionic Self-Assembly of a Giant Vesicle as a Smart Microcarrier and Microreactor.
abstract: Giant vesicles (1-10 μm) were constructed via a facile ionic self-assembly (ISA) strategy using an anionic dye Acid Orange II (AO) and an oppositely charged ionic-liquid-type cationic surfactant 1-tetradecyl-3-methylimidazolium bromide (C14mimBr). This is the first report about preparing giant vesicles through ISA strategy. Interestingly, the giant vesicle could keep the original morphology during the evaporation of solvent and displayed solid-like properties at low concentration. Moreover, giant vesicles with large internal capacity volume and good stability in solution could also be achieved by increasing the concentrations of AO and C14mimBr which contributed to the increase of the other noncovalent cooperative interactions. In order to facilitate comparison, a series of parallel experiments with similar materials were carried out to investigate and verify the driving forces for the formation of these kinds of giant vesicles by changing the hydrophobic moieties or the head groups of the surfactants. It is concluded that the electrostatic interaction, hydrophobic effect and π-π stacking interaction play key roles in this self-assembly process. Importantly, the giant vesicles can act as a smart microcarrier to load and release carbon quantum dot (CQD) under control. Besides, the giant vesicles could also be applied as a microrector to synthesize monodispersed Ag nanoparticles with diameter of about 5-10 nm which exhibited the ability to catalyze reduction of 4-nitroaniline. Therefore, it is indicated that our AO/C14mimBr assemblies hold promising applications in the areas of microencapsulation, catalyst support, and lightweight composites owing to their huge sizes and large microcavities.
authors: Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education , Shanda nanlu No. 27, Jinan, 250100, People's Republic of China.
authors: Jinglin
authors: J
authors: Shen
authors: Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education , Shanda nanlu No. 27, Jinan, 250100, People's Republic of China.|National Engineering Technology Research Center for Colloidal Materials, Shandong University , Shanda nanlu No. 27, Jinan, 250100, People's Republic of China.
authors: Xia
authors: X
authors: Xin
authors: Institute of Materia Medica, Shandong Academy of Medical Sciences , Jinan 250062, People's Republic of China.
authors: Teng
authors: T
authors: Liu
authors: Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education , Shanda nanlu No. 27, Jinan, 250100, People's Republic of China.
authors: Shubin
authors: S
authors: Wang
authors: Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education , Shanda nanlu No. 27, Jinan, 250100, People's Republic of China.
authors: Yingjie
authors: Y
authors: Yang
authors: Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education , Shanda nanlu No. 27, Jinan, 250100, People's Republic of China.
authors: Xiaoyu
authors: X
authors: Luan
authors: Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education , Shanda nanlu No. 27, Jinan, 250100, People's Republic of China.|National Engineering Technology Research Center for Colloidal Materials, Shandong University , Shanda nanlu No. 27, Jinan, 250100, People's Republic of China.
authors: Guiying
authors: G
authors: Xu
authors: Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education , Shanda nanlu No. 27, Jinan, 250100, People's Republic of China.
authors: Shiling
authors: S
authors: Yuan