Zuo Jinglin

An approach to improve the load-carrying capacity of zinc dithiophosphate

Abstract By mixing 0.5wt.% silver complex with 2-ethylhexyl phosphonic acid mono 2-ethylhexylester (AgL·HL) into a conventional zinc dithiophosphate (ZDTP), a new compounded extreme-pressure and antiwear as well as antiseizure additive was obtained. The antiseizure and load-carrying performance of the mixture (Zn-AgDTP) was significantly improved in comparison with ZDTP and AgL·HL. The synergistic action and tribochemical mechanism is proposed on the basis of the worn surface analysis by scanning Auger microprobe (SAM), X-ray photoelectron spectroscopy (XPS) and X-ray micro-diffraction (XRD).

Synthesis and properties of new Iridium complexes based on π conjugated ligands with tetrathiafulvalene

Tetrathiafulvalene (TTF) and its derivatives are unique π-electron donor and they show rich redox properties. In this paper, two new conjugated C∧N ligands based on TTF ( La and Lb ) have been synthesized and their structures are determined by X-ray crystallography. Iridium complexes, [Ir( La )2(tpip)] ( 1 , tpip=tetraphenylimido-diphosphinate) and [Ir( Lb )2(tpip)] ( 2 ), based on the two ligands have been synthesized. All new compounds are characterized by elemental analysis, IR, 1H NMR and MALDI-TOF-MS methods. The electrochemical and spectroscopic properties including UV-Vis absorption spectra and photoluminescence for 1 and 2 are studied.