Most importantly, both fluorescent emission fingerprinting
and photoluminescence spectroscopy of the polymer beads
exhibited strong emissions at approximately 522 nm corresponding
directly with the emission observed for the hexdecylamine
coated quantum dots prior to ligand exchange (522 nm)
(Fig. 1 and 2). Moreover, as Fig. 1 shows, two different regions
of the same bead give essentially identical emission spectra
indicating that quantum dot incorporation is uniform. In
addition, the data in Table 1 show clearly that the amount of
cadmium within the beads remains fairly constant, within
experimental error, even after prolonged periods of Soxhlet
extraction with dichloromethane (entries 1 and 2). This finding