A coating for an ink jet printhead front face, wherein the coating comprises {HEAD ~ a structured organic film} comprising a plurality of segments, {TAIL ~ a plurality} of linkers arranged as a covalent organic framework 
comprising
A coating for an ink jet printhead front face , wherein the coating comprises { HEAD ~ a structured organic film } comprising a plurality of segments , { TAIL ~ a plurality } of linkers arranged as a covalent organic framework
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH