A method 2, wherein {TAIL ~ the chemical bonding} is induced by {HEAD ~ ultraviolet irradiation} 
A method 2 , wherein { TAIL ~ the chemical bonding } is induced by { HEAD ~ ultraviolet irradiation }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD