Thermo- and mechanical-grinding-triggered color and luminescence switches of the diimine-platinum(II) complex with 4-bromo-2,2'-bipyridine.

The square-planar diimine-platinum(II) complex, Pt(4-Brbpy)(C≡CC6H5)2 (1) (4-Brbpy = 4-bromo-2,2'-bipyridine), was prepared and characterized. Solid-state 1 exhibits reversible thermo- and mechanical-grinding-triggered color and luminescence changes. When crystalline 1·2(CH2Cl2) or 1·2(CHCl3) are heated or ground, the original bright yellow-green emission centered at 525 (549, sh) nm changed to 637 and 690 nm, corresponding to thermo- and mechanochromic response shifts of approximately 88-112 nm and 141-165 nm, respectively.

A new sensor for detection of CH3CN and ClCH2CN vapors based on vapoluminescent platinum(II) complex.

The planar platinum(II) complex [Pt(Me3SiC≡CbpyC≡CSiMe3)(C≡CC6H4Et-4)2] (1) with 5,5-bis(trimethylsilylethynyl)-2,2'-bipyridine was prepared and characterized. Solid-state 1 exhibits unusual, selective and reversible luminescence vapochromism to CH3CN and ClCH2CN vapors, which is useful for the detection of these hazardous vapors. A vapochromic cycle was monitored by dynamic variations in emission spectra and X-ray diffraction (XRD) patterns.

2-(5-Bromo-thio-phen-2-yl)-5-[5-(10-ethyl-phenothia-zin-3-yl)thio-phen-2-yl]-1,3,4-oxadiazole.

The mol-ecule of the title compound, C(24)H(16)BrN(3)OS(3), contains three approximately planar fragments, viz. an oxadiazole ring plus two adjacent thio-phene groups, and two phenothia-zine benzene rings, with largest deviations from the least-squares planes of 0.051 (3), 0.

10-Ethyl-3-(5-methyl-1,3,4-oxadiazol-2-yl)-10H-phenothia-zine.

In the title compound, C(17)H(15)N(3)OS, the phenothia-zine ring system is slightly bent, with a dihedral angle of 13.68 (7)° between the benzene rings. The dihedral angle between the oxadiazole ring and the adjacent benzene ring is 7.

[The impact of different provocations on ERK translocation and c-fos expression in neonatal cultured cardiomyocytes].

Objective: To study the nuclear translocation of extracellular signal regulated kinase (ERK) and expression of c-fos mRNA under stimulation of AngII as well as the influence on the nuclear translocation of ERK with different interferences in neonatal cultured cardiomyocytes.

Methods: ERK in the cytoplasm or nucleus was observed by immunocytochemistry using specific antibody and the expression of c-fos was evaluated with RT-PCR technique.

Results: AngII (10(-6) mol/L) had the effect in promoting activation of ERK and then appeared in nucleus rapidly.