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SHUQUAN CHANG,Chengcheng Liu,Heliang Fu,Zheng Li,Xian Wu,Jundong Feng,Haiqian Zhang 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2018 NANO Vol.13 No.12
In this study, a double-solvent radiation method is proposed to prepare silver nanoparticles in the pores of metal-organic framework MIL-101(Cr). The results reveal that well-dispersed silver nanoparticles with a diameter of about 2 nm were successfully fabricated in the cages of monodisperse octahedral MIL-101(Cr) with a particle size of about 400 nm. The structure of MIL-101(Cr) was not destroyed during the chemical treatment and irradiation. The resulting Ag/MIL-101 exhibits excellent catalytic performance for the reduction of 4-nitrophenol. This method can be extended to prepare other single or bimetallic components inside porous materials.
JUN LI,YAODONG DAI,BIN KANG,SHUQUAN CHANG 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2014 NANO Vol.9 No.1
We directly visualized the uptake and intracellular vesicle transport of shortened single walledcarbon nanotubes in living cells through a dual-labeling system. With a stable labeling of °u-orescein isothiocyanate and a pH-sensitive stacking of doxorubicin on carbon nanotubes, thelocation of internalized nanotubes inside the cell and the microenvironment especially the pHchange of the nanotube-embedded vesicles could be monitored at the same time. Results showedthat after internalization through endocytic pathway, carbon nanotubes tended to transportfrom the early endosomes to later acidic lysosomes and these vesicles moved along the micro-tubule track toward a perinuclear region where is a microtubule-organizing center. These resultsmight provide a novel understanding for the intracellular interaction of carbon nanotubes andliving cells.