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