Fabrication of MPEG-b-PMAA capped YVO4:Eu nanoparticles with biocompatibility for cell imaging.

A novel nanoparticle with multilayer core-shell architecture for cell imaging is designed and synthesized by coating a fluorescent YVO4:Eu core with a diblock copolymer, MPEG-b-PMAA. The synthesis of YVO4:Eu core, which further makes MPEG-b-PMAA-YVO4:Eu NPs adapt for cell imaging, is guided by the model determined upon the evaluation of pH and CEu%. The PMAA block attached tightly on the YVO4:Eu core forms the inner shell and the MPEG block forms the biocompatible outermost shell.

Facile synthesis of multifunctional multi-walled carbon nanotube for pathogen Vibrio alginolyticus detection in fishery and environmental samples.

Interest in carbon nanotubes for detecting the presence of pathogens arises because of developments in chemical vapor deposition synthesis and progresses in biomolecular modification. Here we reported the facile synthesis of multi-walled carbon nanotubes (MWCNTs), which functioned as immuno-, magnetic, fluorescent sensors in detecting Vibrio alginolyticus (Va). The structures and properties of functionalized MWCNTs were characterized by ultraviolet (UV), Fourier transform infrared spectra (FT-IR), X-ray diffraction (XRD), vibrating sample magnetometer (VSM), magnetic property measurement system (MPMS) and fluorescent spectra (FL).

N-(Naphthalen-1-yl-methyl-idene)-4H-1,2,4-triazol-4-amine.

In the title mol-ecule, C(13)H(10)N(4), the dihedral angle between the triazole ring and the naphthalene ring system is is 56.1 (2)°. In the crystal, mol-ecules are connected by weak C-H⋯N hydrogen bonds into chains along [100].

1,4-Bis(4H-1,2,4-triazol-4-yl)benzene dihydrate.

The asymmetric unit of the title compound, C(10)H(8)N(6)·2H(2)O, comprises half the organic species, the mol-ecule being completed by inversion symmetry, and one water mol-ecule. The dihedral angle between the 1,2,4-triazole ring and the central benzene ring is 32.2 (2)°.

The triclinic form of di-μ-aqua-bis-[diaqua-bis-(thio-cyanato-κN)iron(II)]-1,4-bis-(4H-1,2,4-triazol-4-yl)benzene (1/3).

In the title compound, [Fe(2)(NCS)(4)(H(2)O)(6)]·3C(10)H(8)N(6), the centrosymmetric dinuclear complex contains two Fe(II) ions bridged by two aqua ligand O atoms, forming a four-membered ring. The slightly distorted octa-hedral coordination environment of the two Fe(II) ions is completed by two monodentate aqua ligands and two thio-cyanate ligands. One of the 1,4-bis-(4H-1,2,4-triazol-4-yl)benzene mol-ecules lies across an inversion center.