Photocurable Polymer with no oxygen functional group or whose the structure is well known I'm experimenting with the PDMS. I want to change the material with no oxygen containing functional group.

Is there a UV curable polymer with no oxygen atom?
Preferably cheap.

Or

Please recommend any UV curable or photoresist with well-known morphological property and molecular (polymer) structure.
I'm not sure if this addresses all your criteria,  but acrylonitrile is polymerisable by light and is oxygen free.