and either MPDC or DMMP as the bifunctional group starting materials needed for cyclization reactions. In addition to the eight-membered ring methylphosphonate I the five-membered ring methylphosphonate II was unexpectedly found to be formed during the cyclization reactions. This small-size cyclic methylphosphonate may have been generated from an intramolecular cyclization reaction by the nucleophilic
A conductive polymer thinfilm having choline phosphate as the side group was prepared. Quartz crystal microbalance (QCM) was employed to evaluate the adsorption of the model protein, bovine serum albumin (BSA), on the films deposited on indium tin oxide (ITO) electrodes. Cell adsorption on the film was evaluated by a fibroblast NIH3T3.