Visible-Light-Driven NO Release from Postmodified MOFs via Photoinduced Electron Transfer for Antibacterial Application.

Photoresponsive nitric oxide (NO)-releasing materials (NORMs) enable the spatiotemporal delivery of NO to facilitate their potential applications in physiological conditions. Here two novel metal-organic frameworks (MOFs)-based photoactive NORMs achieved by the incorporation of prefunctionalized NO donors into the photosensitive Fe-MOFs via a postmodification strategy is reported. The modified Fe-MOFs display superior photoactivity of NO release when exposed to visible light (up to 720 nm). Significantly, the visible-light-driven NO release properties are further corroborated by their efficient antibacterial performance.

N'-(Butan-2-yl-idene)furan-2-carbohydrazide.

The title Schiff base compound, C(9)H(12)N(2)O(2), was obtained from a condensation reaction of butan-2-one and furan-2-carbohydrazide. The furan ring and the hydrazide fragment are roughly planar, the largest deviation from the mean plane being 0.069 (2)Å, but the butanyl-idene group is twisted slightly with respect to this plane by a dihedral angle of 5.2 (3)°. In the crystal, inter-molecular N-H⋯O hydrogen bonds link pairs of inversion-related mol-ecules, forming dimers of R(2) (2)(8) graph-set motif.

Methyl 2-meth-oxy-4-{[2-(4-nitro-phen-yl)hydrazinyl-idene]meth-yl}benzoate.

The mol-ecule of the title Schiff base compound, C(16)H(15)N(3)O(5), obtained from a condensation reaction of 4-acet-oxy-3-meth-oxy-benzaldehyde and 4-nitro-phenyl-hydrazine, adopts an E geometry with respect to the C=N double bond. The mol-ecule is roughly planar, with the two benzene rings twisted slightly with respect to each other by a dihedral angle of 6.90 (9)°. In the crystal, inter-molecular N-H⋯O hydrogen bonds link centrosymmetrically related pairs of mol-ecules, forming dimers of R(2) (2)(22) graph-set motif. The dimers are further connected through slipped π-π inter-actions between symmetry-related benzene rings [centroid-centroid distance of 3.646 (1) Å, offset angle of 15.4°].

[Finite element analysis and fatigue tests for nitinol vascular stents].

This essay is to make brief comments on the Nitinol vascular stents fatigue lifetime requirements, finite element analysis and fatigue lifetime tests etc.

[Nitinol alloy's applications in cerebral interventional devices].

With the development of cerebral interventional medical devices, Nitinol alloy has been widely used in clinical fields as a good biomaterial. This essay is to make brief comments on Nitinol alloy's present development, its material characteristics, medical basic researches, and applications in cerebral interventional devices.

[Research progresses in endovascular stent biomaterials].

This essay is to make brief comments on the physical characteristics, biocompatibility, corrosion resistance, clinical information, existent problems of endovascular stent biomaterials and the developing tendency in future.