[6177c40f]

Parylene C, a chlorocarbon: [1]

> Derivatives of parylene can be obtained by replacing hydrogen atoms on the phenyl ring or the aliphatic bridge by other functional groups. The most common of these variants is parylene C, which has one hydrogen atom in the aryl ring replaced by chlorine. [2]

[1] https://www.science.org/doi/10.1126/science.ado1782

[2] https://en.wikipedia.org/wiki/Parylene#Permeability

[pas]

it seems there's even a biodegradable version

https://www.kit-technology.de/en/technology-offers/details/7...