Figure 9.

UV spectra of (a) PHPP, (b) PHPP mixed with SMNPs, (c) PHPP dissolved in HCl and ethanol, (d) SMNPs dissolved in HCl and ethanol, and (e) SMNPs and PHPP dissolved in HCl and ethanol

Chen et al. Nanoscale Research Letters 2009 4:400-408   doi:10.1007/s11671-009-9254-5