Acid-decomposable, luminescent ZnO quantum dots (QDs) have been employed to seal the nanopores of mesoporous silica nanoparticles (MSNs) in order inhibit premature drug (doxorubicin) release. After internalization into HeLa cells, QD lids are rapidly dissolved acidic intracellular compartments, and as a result, loaded is released cytosol from MSNs. The QDs behave dual-purpose entity that not only acts lid but also has synergistic antitumor effect on cancer cells. We anticipate these may...

A chiral two-dimensional MOF, {[Ca(D-Hpmpc)(H2O)2]·2HO0.5}n (1, D-H3pmpc = D-1-(phosphonomethyl) piperidine-3-carboxylic acid), with intrinsic proton conductivity has been synthesized and characterized. Structure analysis shows that compound 1 possesses protonated tertiary amines as carriers hydrogen-bonding chains served proton-conducting pathways. Further, MOF–polymer composite membranes have fabricated via assembling polymer PVP different contents of rod-like submicrometer crystals....

Abstract A majority of metal–organic frameworks (MOFs) fail to preserve their physical and chemical properties after exposure acidic, neutral, or alkaline aqueous solutions, therefore limiting practical applications in many areas. The strategy demonstrated herein is the design synthesis an organic ligand that behaves as a buffer drastically boost stability porous MOF (JUC‐1000), which maintains its structural integrity at low high pH values. local environment resulting from weak acid–base...

Abstract Hydrogen‐based energy is a promising renewable and clean resource. Thus, hydrogen selective microporous membranes with high performance stability are demanded. Novel NH 2 ‐MIL‐53(Al) evaluated for separation this goal. Continuous have been prepared successfully on macroporous glass frit discs assisted colloidal seeds. The gas sorption ability of materials studied by adsorption measurement. isosteric heats in sequence CO > N CH 4 ≈ H indicates different interactions between...

Enhancing the activity and stability of enzymes improving their reusability are critical challenges in field enzyme immobilization. Here we report a facile efficient biomimetic mineralization to embed thermophilic lipase QLM zeolite imidazolate framework-8 (ZIF-8). Systematic characterization indicated that entrapment molecules was successfully achieved during crystal growth ZIF-8 with an loading ∼72.2 ± 1.88 mg/g lipase@ZIF-8, could facilitate construction framework building blocks. Then...

Two 3D chiral multifunctional microporous MOFs, Zn3(BTC)2(DMF)3(H2O).(DMF)(H2O) (1) and Cd(4)(BTC)3(DMF)2(H2O)2.6(H2O) (2) (H(3)BTC = 1,3,5-benzenetricarboxylic acid DMF N,N'-dimethylformamide), have been synthesized in the presence of organic bases tributylamine (TBA) triethylamine (TEA), respectively. 1 (C(30)H(38)N(4)O(18)Zn(3)) crystallizes tetragonal P4(1)2(1)2 space group (a 13.6929(19) A, c 50.664(10) V 9499(3) A(3), Z 8). 2 (C33H39N2O28Cd4) P4(3)22 10.3503(4) 52.557(3) 5630.4(4) 4)....

A lanthanide metal-organic framework, Dy(BTC)(H2O).DMF, with excellent thermal stability shows a high surface area, 655 m(2) g(-1), hydrogen and carbon dioxide storage capability, available Lewis-acid metal sites which could be anticipated to use in catalysis metal-site specific chemical sensor.

A novel 2D porous organic framework based on the nucleophilic substitution of cyanuric chloride has been designed and synthesized successfully, which possesses an ordered structure, permanent porosity drug release ability towards ibuprofen.

A series of microporous lanthanide metal-organic frameworks, Tb3(BDC)(4.5)(DMF)2(H2O)3.(DMF)(H2O) (1) and Ln3(BDC)(4.5)(DMF)2(H2O)3.(DMF)(C2H5OH)(0.5)(H2O)(0.5) [Ln = Dy (2), Ho (3), Er (4)], have been synthesized by the reaction metal ion (Ln3+) with 1,4-benzenedicarboxylic acid triethylenetetramine in a mixed solution N,N'-dimethylformamide (DMF), water, C(2)H(5)OH. X-ray diffraction analyses reveal that they are extremely similar structure crystallized triclinic space group P. An...

Here we present a new 3D microporous COF with uniform pore size (0.64 nm). MCOF-1 exhibits high adsorption selectivity towards C3H8, C2H6 and C2H4 over CH4 owing to the preferential adsorption.

A porous MOF is used to detect nitroaromatic explosives by fluorescence quenching and spectral shift. It amongst the most efficient material-based sensors for TNP.

Tetrakis(4-bromophenyl)methane (TBPM) as a tetrahedral unit and diboronic acid linker were selected to couple the phenyl rings into porous aromatic framework, PAF-11. PAF-11 was polymerized via Suzuki coupling reaction. A TG analysis showed that is thermally stable up 400 °C in air. also has high chemical stability cannot be dissolved or decomposed common solvents concentrated hydrochloric acid. N2 sorption measurement on activated revealed surface area of 952 m2 g−1 Langmuir model. shows...

A large-scale continuous thin film of Cu3(BTC)2 on polished Cu slice is prepared through a method homogenous nucleation. The shows high phase purity and homogeneity can be set up for capacitive humidity sensing. As sensor, the MOF good sensor properties.

Porous organic frameworks (POFs) have attracted considerable attention due to their high surface areas and good mechanical properties. A series of vivid characteristics in POFs, such as plentiful phenyl rings texture, area, uniform pore size distribution permanent porosity, make themselves suitable adsorbents adsorb pollutants. To synthesize a new porous aromatic framework being composed only rings, monomer 1,3,5-tris(4-bromophenyl)benzene was employed. PAF-5 has been synthesized...

A novel 44 square grid microporous metal–organic framework (MOF) JUC-110 with 1D open channels has been synthesized, which shows exceptional hydrothermal stability and capability for separating alcohols from water in gas chromatographic (GC) separation.

A highly porous bio-MOF, medi-MOF-1, constructed from Zn and the pharmaceutical ingredient curcumin has been successfully synthesized. It can display permanent porosity with a surface area as high ca. 3002 m(2) g(-1), which exhibits great potential in bioapplications. Its ibuprofen delivery ability, biodegradation cytotoxicity were also studied.

A bifunctional MOF featuring the combination of open metal sites (Zn²⁺) and Lewis basic (–NH₂) has been constructed for selective gas adsorption heterogeneous cascade catalysis.

The assembly of two electron-rich fluorescent monomers produces a new dual luminescent covalent organic framework (DL-COF), which exhibits nitro explosives detecting ability with high sensitivity (<italic>K</italic>_sv∼ 10⁶M⁻¹,<italic>K</italic>_q∼ 10¹⁵M⁻¹s⁻¹) and selectivity (at ppb level).

Efficacious chemotherapy mainly hinges on the tumor-specific delivery of anticancer drugs. Herein we report a successful fabrication highly photoluminescent and water dispersible ZnO quantum dotsvia new ligand exchange free strategy. In addition to bioimaging, QDs have also been evaluated as platform for targeted pH responsive intracellular an drug. The cancer targeting feature is endowed by conjugating folic acid surface ZnO–NH2 via amidation reaction. Doxorubicin (DOX) then successfully...

Metal-organic frameworks (MOFs) are a rapidly growing class of hybrid materials with many multifunctional properties. The permanent porosity plays central role in the functional In particular, luminescent MOFs have wide applications guest species recognition and adsorption. this contribution, we aim to develop tunable colors white-light luminescence by encapsulation Ln(3+) microporous MOFs. A semi-rigid trivalent carboxylic acid 1,3,5-tri(4-carboxyphenoxy)benzene (H3TCPB) was selected as...

An exceptionally stable metal–organic framework based on one-dimensional (1D) TbIII chains with significant green emission under excitation energy, {[Tb(TATMA)(H2O)·2H2O}n (namely, 1), has been fabricated successfully hydrothermal conditions. By virtue of the spectral overlap between absorbance spectra nitrofurans (NFAs) and spectrum MOF 1, resultant sample exhibits outstandingly sensitive selective luminescence detectability for NFT (Ksv = 3.35 × 104 M–1) NFZ 3.00 by quenching phenomenon....

Uranium capture from seawater could solve increasing energy demand and enable a much needed relaxing fossil fuels. Low concentration (∼3 ppb), competing cations (especially vanadium) pH-dependent speciation prohibit highly efficient uranium uptake. Despite intensive research, selective extraction of uranyl ions over vanadyl units remains tremendous challenge. Here, we adopted molecular coordination template strategy to design uranyl-specific bis-salicylaldoxime entity decorated it into...

We first designed and synthesized a new semirigid tripodal ligand with tetrazole groups, 1,3,5-tri(4-(2H-tetrazol-5-yl)phenoxy)benzene (H3TTPB). Two isostructural microporous metal–organic frameworks (MOFs), namely [Cu3(TTPB)2(H2O)6]·5DMF (JUC-130) [Cd3(TTPB)2(H2O)6]·6DMF (JUC-131) (JUC = Jilin University, China), were successfully under solvothermal reactions based on this ligand, which both possess two-dimensional (2D) similar trinuclear metal centers as secondary building units (SBUs)....

“Light metal, strong power”: new porous aromatic frameworks (PAF-26) with available carboxyl groups are synthesized and further modified light metal ions (Li⁺, Na⁺, K⁺, Mg²⁺); the metalized PAF-26 shows a distinct enhancement for CO₂ CH₄ uptake.