Benzothiazole zinc complexes

Barbituric acid, methyl-5-nitroso-zinc complexes, 958 Bayldonite, 960 Benzeneselenic acid metal complexes, 977 Benzimidazole metal complexes, 949 Benzoquinoline zinc complexes, 953 Benzothiazole zinc complexes, 981 Benzotriazole zinc complexes, 950 Benzoxazole metal complexes, 951 Berry twist... 

The broad PL emission spectra of some metal chelates match the requirements for white emission. Hamada et al. investigated a series of Zn complexes and found bis(2-(2-hydroxy-phenyl)benzothiazolate)zinc (Zb(BTZ)2, 246) is the best white emission candidate. An OLED with a structure of ITO/TPD/Zn(BTZ)2/OXD-7/Mg In showed greenish-white emission with CIE (0.246, 0.363) with a broad emission spectrum (FWHM 157 nm) consisting of two emission peaks centered at 486 and 524 nm (Figure 3.14) [277], A maximum luminance of 10,190 cd/m2 at 8 V was achieved. The electronic and molecular structure of Zn(BTZ)2 have been elucidated by Liu et al. [278]. There is evidence that the dimeric structure [Zn(BTZ)2]2 in the solid state is more stable than its monomer Zn(BTZ)2. They also found that the electron transport property of Zn(BTZ)2 is better than that of Alq3. 

Zinc oxide and certain fatty acids (R—COOH) are also added. Although this mechanism is by no means completely understood, it is proposed that the benzothiazole and zinc oxide give a zinc mercaptide, and this forms a soluble complex with the fatty acid. 

A number of complexes of zinc with benzothiazole and other sulfur-containing ligands have been described and the crystal structure of [NBuJ [ZnQ CNMe (02CMe), which contains a square pyramidal ZnS40 unit, has been reported.91 ... 

Zinc ethanoate behaves similarly to mercury(II) ethanoate on reaction with 2-(2-pyridyl)benzothiazole and gives complexes of a ring-opened ligand.928... 

A number of benzothiazole-Schiff base complexes of the type (43) have been evaluated against Helminthosporium oryzae. Complex (43) and its zinc analogue were found to show enhanced activity relative to the free ligand.106 The activity was very dependent on the substituent in the benzothiazole ring. Some analogous 4-phenylthiazole complexes of both metals were also effective,... 

Although sulfur vulcanisation was discovered over one hundred and fifty years ago, the exact mechanism of vulcanisation is still being examined. This arises not only from the complexity of the reactions and products formed but also to the fact that the mechanism of accelerated sulfur vulcanisation changes is dependent on the class of accelerators/ activators used. Typically, benzothiazole or sulfenamide are used as accelerators, zinc... 

Hamada et. al. (1996) (8) have synthesized a metal complex of 2-(2-hydroxyphenyl) benzothiazole (BTZ) with zinc (Zn) to yield Zn(BTZ)2 which can emit greenish-white light from the device ITO/TPD/ Zn(BTZ)2/MgIn (Figure 2), in which TPD behaves as a hole transport layer (HTL). Its chromaticity coordinates are x=0.246 and y=0.364, and brightness over 10,000 cd/m at the bias 8 V. 

Eigure 271. Zinc dithiocarbamate complexes containing the benzothiazole-2-thiolate ligand. 

The third mode of decomposition is only important in A-type monosulfides (and D-type from the diene model 5) and then only in the presence of catalysts. This is a simple elimination reaction, but its course is often obscured by secondary reactions of the primary products (equation Many accelerators and accelerator transformation products are catalysts for this decomposition. They include zinc benzothiazole-2-thiolate (ZMBT) and zinc dithiocarbamates and their amine complexes, as well as CBS, MBT and MBTS (which would normally not be present in quantity when monosulfide crosslinks are formed during the course of vulcanization). 

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