On The Folding Of Alternating Divinylarene-(1,ω-Disila-oligomethylenene) Copolymers

A series of polymers with alternating divinylarene-(1,-disila-oligomethylenene) copolymers have been designed and synthesized to inspect the folding behavior of the corresponding copolymers by invetstigating their photophysical properties.I synthesized the different length of corresponding copolymers with Heck Reaction. At the same time, I synthesized a series of the corresponding dimer. Compared with copolymers and dimers, there is a clear contrast to our study of molecular folding adjacent chromophore.The analysis of the experiments, we found that:the polymer in addition to the original two vinylphenyl luminophore also exists some other emission, and appears in the wavelength of350nm. Moreover, with a carbon number of different polymer midblock interval, intensity of the wavelength is not the same. Perhaps, due to the polymer of carbon number of different, leading to different molecular folding, so the intensity is different. It is worth noting that the photophysical behaviors of copolymers are very different from those of the corresponding dimers. Our results suggest that folding of these copolymers, hence the ground state interactions between chromophores, would play a prevailed role to dictate the photophysical properties of these copolymers.