Abstract A water‐stable luminescent terbium‐based metal–organic framework (MOF), {[Tb(L 1 ) 1.5 (H 2 O)] ⋅ 3 H O} n (Tb‐MOF), with rod‐shaped secondary building units (SBUs) and honeycomb‐type tubular channels has been synthesized structurally characterized by single‐crystal X‐ray diffraction. The high green emission intensity the microporous nature of Tb‐MOF indicate that it can potentially be used as a sensor. In this work, we show selectively sense Fe 3+ Al ions from mixed metal in water...

Abstract Hydrogen‐bonded organic frameworks (HOFs) are a class of crystalline framework materials assembled by hydrogen bonds. HOFs have the advantages high crystallinity, mild reaction conditions, good solution processability, and reproducibility. Coupled with reversibility flexibility bonds, can be into wide diversity structures. Since bonding energy bonds is lower than that ligand covalent prone to collapse after desolventisation stability not high, which limits development application...

As the high-power density and environmentally friendly energy resources, proton exchange membrane fuel cells (PEMFCs) have a promising future in portable power generation. Herein, hybrid Nafion membranes of ionic hydrogen-bonded organic frameworks (iHOFs) for PEMFC applications are demonstrated. By adjusting position sulfonic groups on naphthalene disulfonic acid compounds, four iHOFs with different types hydrogen bonds were synthesized successfully based 1,1'-diamino-4,4'-bipyridylium acid....

The development of high-performance proton exchange membrane fuel cells (PEMFCs) is crucial yet challenging. Enrichment transport pathways by doping ionic hydrogen-bonded organic frameworks (iHOFs) in Nafion matrix important for further PEMFCs. In this work, an iHOF material (iHOF-9) based on arylphosphonate anions and guanidinium cations with the three-dimensional (3D) network was synthesized, which exhibits ultrahigh conductivity 4.38 × 10–2 S·cm–1 at 90 °C 98% RH. addition, mixing into...

Altered expression of micro(mi)RNAs has been shown to be associated with tumorigenesis and tumor progression. The phosphatase tensin homolog (PTEN) plays an important role in glioma is regarded as a prognostic marker patients. goal this study was investigate the function lethal (let)-7a miRNA cell lines different PTEN phenotypes.One hundred ninety-eight tissues were used profile expression.Let-7a have lower high-grade than low-grade glioma. Low let-7a correlated poor prognosis primary...

A series of six coordination polymers, namely, [Cd1.5(L)]n (1), [Cd1.5(L)(bpp)]n (2), {[Cd1.5(L)(p-bix)]·H2O}n (3), [Cd1.5(L)(m-bix)]n (4), {[Cd1.5(L)(dpa)3(H2O)]·2H2O}n (5), and {[Cd1.5(L)(bpbd)2.5]·2H2O}n (6) (Na3L = (S)-(−)-5-(1-carboxy-ethoxymethyl)-isophthalic acid trisodium salt), have been hydrothermally synthesized through the reaction Na3L with divalent cadmium salts or without presence ancillary nitrogen ligands (bpp 1,3-bi(4-pyridyl)propane, p-bix...

An ionic hydrogen-bonded organic framework exhibits fast and reversible photochromic properties. Benefiting from the stimuli-responsive property, information encryptions decryptions integrated with photoresponsivity are successfully designed.

The fluorescent porous MOFs can be host materials to explore vectorial Förster resonance energy transfer between and organic dyes.

Excellent and inexpensive materials with proton conductivity have far-reaching significance for the development of clean energy. In this paper, three ionic hydrogen-bonded organic frameworks (iHOFs) were synthesized using naphthalenedisulfonate derivatives substituents at different positions 1,1′-diamino-4,4′-bipyridylium. The hydrogen bond networks formed by sulfonic acid groups amino groups, while addition functional such as hydroxyl or can also enrich bonds, which makes iHOFs high...

Design and understanding of complex material systems represent an intriguing pursuit for chemical research could lead to functional materials with superior performance new applications. Here, a highly porous amorphous carbon sponge incorporating uniformly dispersed multicomponent 3d-metal nanoparticles was prepared from heterometal cluster-based metal–organic frameworks (MOFs) [M3(bpt)2(DMF)2(H2O)2] (M = Fe2+, Co2+, Ni2) through controllable structural transformation under mild temperature....

Developing proton-conducting materials with superior proton conductivity and excellent stability plays an indispensable role in the advancement of direct methanol fuel cells (DMFCs). In this work, we successfully synthesized ionic hydrogen-bonded organic framework (iHOF-13) 3D hydrogen-bonding network structures. The inherent abundance hydrogen bonding networks HOFs enables them to exhibit superprotonic conductivity. Specifically, iHOF-13 demonstrates a 1.3 × 10–1 S cm–1 at 98% relative...

Recently, great attention has been devoted to the initial and final structures of single‐crystal (SCSC) transformations dissolution‐recrystallization structural (DRSTs), whereas isolation characterization crucial intermediates unequivocal mechanism dynamic conversion process receive comparatively little consideration. Herein, a Cu II ‐based porous coordination polymer (PCP), which possesses Kagomé lattice, is solvothermally synthesized. Triggered by water, 2D lattice (PCP‐1) primarily...

Abstract The weak intermolecular forces of hydrogen‐bonded organic frameworks (HOFs) make it relatively difficult to synthesize and design HOFs with superprotonic conductivity robustness. self‐assembly ionic hydrogen bonding (iHOFs) through acid–base pairing strategies are possible on account the rich bonding, strong π–π stacking interactions so on. Herein, a case iHOF ( iHOF‐16 ) three‐dimensional (3D) network is reported, doughty bond in structure between layers exhibits excellent thermal...

In this paper, iHOF-43 and iHOF-44, which contain multiple water clusters, were prepared by introducing ligands that three hydrophilic functional groups. The proton conductivity ( a -axis) of at 90 °C 98% RH was 1.66 × 10 −1 S cm .

Stimuli-responsive smart materials, as an emerging material, can fulfill reversible transformation of chemical/physical properties under external stimuli such mechanical stress, light, and electricity, which has the highlights rapid response, designable structure, function. Two ionic hydrogen-bonded organic frameworks (iHOFs 36-37) were synthesized by self-assembly bis(benzene-o/p-sulfonic acid)-naphthalenediimide (o/p-H2BSNDI) two basic ligands. The naphthalenediimide (NDI) was introduced...

Charge-assisted photochromic iHOF-51 enables fast stimulus-responsive behavior through photogenerated anionic radicals. Time-dependent photochromism in the powder form and FRET-based photoluminescence composite membranes are observed.

Herein, we report two charge-assisted hydrogen-bonded organic frameworks (iHOF-24 and iHOF-25) with 3D/2D hydrogen-bonding networks, which exhibit high ionic conductivity for alkali metal ions. Among them, the of Li+ is higher than that Na+ K+, conductivities Li@iHOF-24 Li@iHOF-25 at 30 °C were 9.44 × 10-5 9.85 S cm-1. This change attributed to distance between neighboring carbonyl groups in iHOF-24 iHOF-25, as well radius loaded

Multi‐response encryption materials with temperature control and time resolution have attracted widespread attention due to their unique response characteristics higher application security. The design development of photochromic crystalline multiple stimulus responses remain challenging. In this study, we report a pair responsive chiral ionic hydrogen bonded organic framework (iHOF) R/S‐iHOF‐19 controlled by both solvent through charge‐assisted synthesis. chromophore...

Multi‐response encryption materials with temperature control and time resolution have attracted widespread attention due to their unique response characteristics higher application security. The design development of photochromic crystalline multiple stimulus responses remain challenging. In this study, we report a pair responsive chiral ionic hydrogen bonded organic framework (iHOF) R/S‐iHOF‐19 controlled by both solvent through charge‐assisted synthesis. chromophore...

The active lone pair electron effect and highly flexible coordination geometry of Pb2+ prevented the rational construction metal–organic frameworks (MOFs) but promoted excellent fluorescence tuning. regulation on organic alkali templates facilitated assemblies three new Pb-MOFs: [Pb2(pia)2(DMA)]·DMA (1), [Pb2(pia)2(DMF)]·1.5DMF (2), [Pb2(pia)2(DMF)]·NEt3 (3). They were rigid rod-spacer double-walls frameworks, which possess defective dicubane [Pb4O6] based metal-carboxyl chains constructed...

Two ionic hydrogen-bonded organic frameworks (iHOF-10, iHOF-11) were prepared using 1,1'-diamino-4,4'-bipyridine diiodide (Dbpy ⋅ 2I) and tetrakis(4-sulfophenyl)ethylene (H4 TPE). With increasing RH temperature, water molecules induce single crystal to (SCSC) transformation of iHOF-10, resulting in the formation iHOF-11. At 90 °C, 98 % RH, proton conductivity iHOF-11 (7.03×10-3 S cm-1 ) is 2.09 times higher than iHOF-10 (3.37×10-3 ). 50 (9.49×10-4 19.06 (4.98×10-5 The shows enter...