As used herein, {HEAD ~ an S— group} bound to a metal surface is defined as including {TAIL ~ both a presence} and an absence of the thiol hydrogen 
is defined as including
As used herein , { HEAD ~ an S — group } bound to a metal surface is defined as including { TAIL ~ both a presence } and an absence of the thiol hydrogen
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH