Diacetylene-containing methacrylates

A few methacrylates (5) and dimethacrylate (6) which contain al hatic DA groiq>s were synthesized 2G) and are shown in Chart 2. In order to conq)are the NLO properties of PDA-containing polymers with those of the PDAs obtained by the molten state polymerization, several novel diacetylenes were synthesized, and their chemical structures are shown in Chart 2 for aromatic diesters (7, 8) and aromatic diamide (9). These conq)ounds were synthesized by the Heck reaction of the corresponding bromo compounds with trimethylsilylacetylene, as shown in Chart 3. 

For some time, there has been interest in the controlled release properties of stabilized liposomes.(i-3) A number of methods for stabilizing liposomes have been developed. Liposomes have been prepared from lipids which contain polymerizable groups such as methacrylate, butadiyne, or diacetylene and subsequently polymerized.(4-6) Another strategy is to n e liposomes from lipids with amino add headgroups and then potymerize the liposome Ity potycondensatioiL(7) Alternatively, stabilized liposomes have been prepared from prepolymerized amphiphiles.(8) Recently, the design and preparation of... 

---