Hyperbaric Oxygen Therapy Achieved Fistula Healing in a Young Patient With Severe Refractory Perianal Crohn's Disease.

The presence of perianal fistulae constitutes a more severe phenotype of Crohn's disease (CD) that often requires intensive medical therapy, wound care, and surgical intervention. Despite therapeutic advances in inflammatory bowel disease, the treatment of perianal fistulae remains challenging. Hyperbaric oxygen therapy (HBOT) has been proposed as an adjunctive treatment modality for induction of fistula healing.

Metastatic Gastric Mucosal Melanoma: A Rare Case Presenting With Diffuse Gastric Polyposis.

We report a 66-year-old Chinese lady who presented with a three-month history of postprandial vomiting, early satiety, anorexia and weight loss, and significant physical findings of hepatomegaly and ascites. Gastroscopy revealed gastric polyposis with both hyperpigmented and unpigmented lesions over the gastric fundus, body, and proximal antrum, biopsies of which yielded malignant melanoma histologically. Cross-sectional imaging with CT also demonstrated extensive hepatic and bony metastases.

Encapsulating a Ni(II) molecular catalyst in photoactive metal-organic framework for highly efficient photoreduction of CO.

Photocatalytic reduction of CO to CO is a promising strategy for reducing atmospheric CO levels and storing solar radiation as chemical energy. Here, we demonstrate that a molecular catalyst [Ni(bpet)(HO)] successfully encapsulated into a highly robust and visible-light responsive metal-organic framework (Ru-UiO-67) to fabricate composite catalysts for photocatalytic CO reduction. The composite Ni@Ru-UiO-67 photocatalysts show efficient visible-light-driven CO reduction to CO with a TON of 581 and a selectivity of 99% after 20-h illumination, because of the facile electron transfer from Ru-photosensitizer to Ni(II) active sites in Ni@Ru-UiO-67 system.

Integration of Lanthanide-Transition-Metal Clusters onto CdS Surfaces for Photocatalytic Hydrogen Evolution.

Heterometallic lanthanide-transition-metal (4f-3d) clusters with well-defined crystal structures integrate multiple metal centers and provide a platform for achieving synergistic catalytic effects. Herein, we present a strategy for enhanced hydrogen evolution by loading atomically precise 4f-3d clusters Ln Ni on a CdS photoabsorber surface. Interestingly, some Ni ions in the clusters Ln Ni were exchanged by the Cd to form Ln Ni Cd /CdS composites.

Photo-generated dinuclear {Eu(II)} active sites for selective CO reduction in a photosensitizing metal-organic framework.

Photocatalytic reduction of CO is a promising approach to achieve solar-to-chemical energy conversion. However, traditional catalysts usually suffer from low efficiency, poor stability, and selectivity. Here we demonstrate that a large porous and stable metal-organic framework featuring dinuclear Eu(III) clusters as connecting nodes and Ru(phen)-derived ligands as linkers is constructed to catalyze visible-light-driven CO reduction.

Anion-Dependent Assembly of Heterometallic 3d-4f Clusters Based on a Lacunary Polyoxometalate.

A series of heterometallic 3d-4f clusters, formulated as Na[Ln(HO)Ni(HO)(SbO)(SbWO)(NiWO)(WO)(CHCOO)]·(HO) [abbreviated as LnNi, where Ln = La (1), Pr (2), and Nd (3)], KNa[Ln(HO)Ni(HO)(SbWO)(WO)(CO)]·(HO) [abbreviated as LnNi, where Ln = La (4), Pr (5), and Nd (6)], and KNa[LnNi(μ-OH)(SbWO)(PWO)(CHCOO)]·(HO) [abbreviated as LnNi, where Ln = Dy (7) and Er (8)], were obtained through the reaction of the lacunary {SbWO} precursor with Ln(NO)·6HO and NiCl·6HO in a NaAc/HAc buffer in the presence of different anions. Single-crystal X-ray structure analysis revealed that compounds 1-3 possessed tetrameric architectures featuring three Keggin-type {SbWO} and one Anderson-type {NiWO} building blocks encapsulating one {SbO} cluster, three WO units, three Ln metal ions, and two Ni metal ions. Compounds 4-6 displayed cyclic trimeric aggregates of three {SbWO} units enveloping one CO-templated trinuclear [Ln(CO)] and one WO-templated [Ni(WO)] unit.

Three Giant Lanthanide Clusters Ln (Ln = Gd, Tb, and Eu) Featuring A Double-Cage Structure.

Three homometallic high-nuclearity clusters, formulated as [(CO)@Ln(LH)(CHCOO)(CO)(μ-OH)(μ-HO)(HO)]·(ClO)·(HO) (abbreviated as Ln, Ln = Gd (1); Tb (2); Eu (3), LH = 1,2,3-cyclohexanetriol) and featuring a double cage-like structure, were obtained through the reaction of 1,2,3-cyclohexanetriol, acetate ligand, and Ln(ClO). The largest odd-numbered lanthanide cluster Gd exhibits an entropy change (-ΔS) of 38.7 J kg K.

Single-Crystal to Single-Crystal Phase Transition and Segmented Thermochromic Luminescence in a Dynamic 3D Interpenetrated Ag(I) Coordination Network.

A new 3D Ag(I)-based coordination network, [Ag2(pz)(bdc)·H2O]n (1; pz = pyrazine and H2bdc = benzene-1,3-dicarboxylic acid), was constructed by one-pot assembly and structurally established by single-crystal X-ray diffraction at different temperatures. Upon cooling from 298 to 93 K, 1 undergo an interesting single-crystal to single-crystal phase transition from orthorhombic Ibca (Z = 16) to Pccn (Z = 32) at around 148 K. Both phases show a rare 2-fold-interpenetrated 4-connected lvt network but incorporate different [Ag2(COO)2] dimeric secondary building units.

A one-dimensional cadmium metal-organic chain based on a [Cd4(COO)4] secondary building unit and a flexible dicarboxylic acid ligand.

An infinite one-dimensional cadmium metal-organic chain, namely catena-poly[aquabis(μ3-2,2'-{[1,2-phenylenebis(methylene)]bis(sulfanediyl)}dibenzoato)dicadmium(II)], [Cd2(C22H16O4S2)2(H2O)]n, was synthesized by solvothermal reaction of Cd(NO3)2·4H2O and 2,2'-{[1,2-phenylenebis(methylene)]bis(sulfanediyl)}dibenzoic acid (H2L). The Cd(II) centres have six-coordinate CdS2O4 and CdSO5 geometries. Due to the flexible -CH2-S- arms, the L(2-) ligand adopts both syn and anti conformations.

A novel one-dimensional silver cylinder stabilized by mixed 2-mercaptobenzoic acid and ethylenediamine ligands.

A novel infinite one-dimensional silver cylinder, namely poly[μ-ethylenediamine-μ(5)-(2-sulfanidylbenzoato)-μ(4)-(2-sulfanidylbenzoato)-tetrasilver(I)], [Ag(4)(C(7)H(4)O(2)S)(2)(C(2)H(8)N(2))](n), has been synthesized by one-pot reaction of equivalent molar silver nitrate and 2-mercaptobenzoic acid (H(2)mba) in the presence of ethylenediamine (eda). One Ag atom is located in an AgS(2)NO four-coordinated tetrahedral geometry, two other Ag atoms are in an AgS(2)O three-coordinated T-shaped geometry and the fourth Ag atom is in an AgSNO coordination environment. The two mba ligands show two different binding modes.