The method 9 wherein said optically active metal ion is incorporated into said {HEAD ~ bead} by {TAIL ~ coprecipitation} during said sol gel process 
The method 9 wherein said optically active metal ion is incorporated into said { HEAD ~ bead } by { TAIL ~ coprecipitation } during said sol gel process
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH