A cationic metal−organic framework (MOF) ZJU-48 with one-dimensional pores of about 9.1 × 9.1 Å 2 has been prepared from zinc ions, adenine, and carboxyl ligands. ZJU-48 displays excellent water stability for about one week, exhibiting its potential application for adsorption and separation of dyes. Cationic and anionic dyes with similar sizes are adopted to study the adsorbing and separating properties of ZJU-48. Cationic dyes are adsorbed better than anionic dyes because of the negatively charged zeta potential of the material surface, implying its selective adsorption to cationic dyes, and it is charge-based adsorption. Meanwhile, the adsorption ability of the MOF to cationic dyes with different sizes is also investigated. We find that the adsorbed amount decreases with increase in the size of organics ,indicating that it is sizebased adsorption. Furthermore, the cationic dye methylene blue (MB) is employed and focused on for its suitable charge and fitting size to evaluate the maximum adsorption capacity and desorption progress of ZJU-48. The results show that the maximum loaded amount of MOF toward MB reaches 582.44 mg/g, and about 90% of loaded dyes can be released from frameworks in N,N-dimethylformamide with NaCl over 6 h, exhibiting satisfactory adsorptive property and possibility as a reusable adsorbent.
A biocompatible
Y(III)-based metal–organic framework [Y4(TATB)2]·(DMF)3.5·(H2O) (ZJU-16,
H3TATB= 4,4′,4′′-(1,3,5-triazine-2,4,6-triyl)
tribenzoic acid) was synthesized, and it was adopted to load Mn2+ for chemodynamic therapy. Meanwhile, ibuprofen sodium (IBUNa),
an anti-inflammatory drug, was introduced to increase the amount of
Mn2+ (about 5.66 wt %) due to the low loading capacity
of Mn2+. Mn&IBUNa@ZJU-16 which was loaded by Mn2+ and IBUNa exhibited significant effects of chemodynamic
therapy and excellent inhibition of the 4T1 tumor cell growth, implying
its long-term prospects in chemodynamic therapy and its possibility
in bimodal cancer therapy.
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