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