Research Plan
1。Present research related to research plan   
 My present research mainly focuses on the late transition metal catalysts for olefin polymerization and coordination polymerization of polar vinyl monomers. A family of new cationic Pd（II) and Ni（II) complex catalysts reported shows good activity for polymerization of polar vinyl monomers and olefins. The easily varied steric and electronic properties of ligands are an important feature of the late transition metal complex catalysts。 The samples include [bis(2—biphenylylimino） acenaphthene］dichloronickel； ［bis(1—naphthylimino)acenaphthene］ dichloronickel;［（N-1-naphthy- limino-N’-2,6—isopropylphenylimino)acenaph-thene]dichloronickel; bis-[(N-2,6—diisopropyl phenylimino）—2-oxy-1—naphthylmethylene]nickel；bis[(N—2—methylphenylimino)—2-oxy-1—naphthyl—methylene］ nickel， etc. The relationship between the structure of ligands and the activity of catalysts is the most important part in my present research。 Using the high quality equipment and facility in Colorado State University to study the coordination polymerization of polar vinyl monomers is a wonderful dream in my research career.
2。Purpose of proposed research
Significant advances have been achieved in the coordination polymerization of polar vinyl monomers by discrete lanthanide and early and late metal catalysts for the past years， especially in the area of stereochemical control of polymerization， producing a large body of publications on this important topic。 However， coordination polymerization of polar vinyl monomers is still an open question for chemists。 It is well known that O or N atom in polar vinyl monomers can deactivate the activity of catalysts due to their coordinating to the central metal atom。 Some work will be done in order to improve performance of late metal complexes catalysts which needs to be used for polymerization of polar vinyl monomers or copolymerization with olefine.
My proposed research should mainly focus on preparing some new late metal complexes with high catalytic activity， revealing the relationship between the structure and the activity of them， as well as the microstructure of polymers obtained by these catalysts.Using the high quality facility at CSU to study the polymeric mechanism is also our purpose.
3。 Proposed plan
The project will involve the use of the most advanced facilities available in CSU, such as X-ray diffractometers facility， high resolution photoluminescence spectrometer， Nuclear Magnetic Resonance(NMR)spectrometers， Electron Paramagnetic Resonance (EPR) spectrometer， Scanning Electron Microscopy, etc。 Prof。 Eugene Chen’s group has studied polymerization catalysis of olefins and polars for many years and achieved many exciting results. I think that we can make big success in CSU by carrying out the research topics listed below。
    The proposed projects described below are examples of interesting problems within this general area of catalytic organometallic and polymer chemistry。 With the good match to the research interests of Prof。 Eugene Chen's group I expect to able to work with all of them.
Part 1: Preparation and characterization of nickel complexes with the chiral ligands。
A large number of divalent metal complexes of groups 8 （Fe）， 9 (Co）， 10 (Ni， Pd), and 11 (Cu） have been reported to polymerize （meth）acrylates when combined with a large excess of methylaluminoxane （MAO） as activator, including the following: nickel dibromide complexes bearing α-diimine ［N，N] ligands, bis-（indanone—iminato) [O—,N] nickel complexes， nickel phenyl complexes supported by β-ketoiminato [（O,N）—］ ligands， bis（β—ketoamino) [（O,N)—] nickel complexes, nickel complexes bearing bis(8—hydroxylnitroquinoline) [O—,N]ligands, bis(3，5—dinitro—salicylaldiminate) ［O-,N] nickel complexes, mono（salicylaldiminate) [O—，N］ nickel (COD） complexes （also for copolymerization of ethylene with ethylene with MMA)。 The PMMAs produced by these systems typically exhibit broad MWDs （〉2) and are syndio-rich, and the mechanism of polymerization of acrylic monomers mediated by such late metal complexes， vis-a—vis coordination-insertion vs free—radical polymerization, was often not clearly demonstrated。 We plan to prepare some chiral ligands, such as 2—Amino-2’—hydroxy-1, 1’—binaphthyl and its derivatives, and get chiral metal complexes(Ni，Pd with these ligands) with catalytic activity, and then characterize these complexes。
Part 2： Activity of catalysts and its influence factor.
 It is well known that the structure of ligand has great effect on the activity of catalyst. Performance of catalyst can be changed and controlled by varying temperature， cocatalysts， substitutes on the aromatic ring, and steric bulkiness of the auxiliary ligand。  . We will study the effects of different reaction condition， cocatalysts on the activity of the complexes above and find out the best catalytic system for polar vinyl monomers, such as methyl methacrylate methyl methacrylatereaction plan(MMA), acrylonitrile and vinyl ketone， etc。
We are going to
Part 3: Microstructure of polymers and reaction mechanism
It is desired that asymmetric coordination polymerization of such polar vinyl monomers be developed so that the reaction proceeds in a manner such that each enchaining monomer must coordinate to the chiral catalyst center before enchainment and thus the enchaining e
vent is regulated by the same asymmetric catalyst center and insensitive to the degree of polymerization, thereby producing chiral polymers of uniform asymmetric induction. It is also advantageous that such polymerization be living/controlled and achievable at ambient or higher temperature， in terms of degree of control over polymerization and stereochemistry.We are going to carry out polymerization of polar vinyl monomers using these enantiomeric chiral catalyst prepared above and investigate the polymer chain-length effects on the chiroptical activity of the chiral polymers.

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