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. Author manuscript; available in PMC: 2017 Mar 3.
Published in final edited form as: J Phys Chem C Nanomater Interfaces. 2016 Feb 19;120(8):4546–4555. doi: 10.1021/acs.jpcc.6b00185

Figure 2.

Figure 2

A) Two-photon emission spectrum from DNA-mediated gold nanoprism assembly at 1100 nm excitation. Spectrum shows a strong TPS peak at 550 nm and broad two-photon luminescence with emission maxima at 700 nm. Two-photon emission spectrum from DNA at 1100 nm excitation, shows no observable TPS and TPF peaks. B) Plot shows linear relationship between SHG intensity at 550 nm from DNA-mediated gold nanoprism assembly and the square of intensity of 1100 nm excitation laser power, which clearly indicates that it is a two-photon process. C) Plot shows linear relationship between TPF intensity at 700 nm from DNA-mediated gold nanoprism assembly and the square of intensity of 1100 nm excitation laser power, which clearly indicates that it is a two-photon fluorescence process. D) Plot shows the photostability of TPS intensity at 550 nm from DNA-mediated gold nanoprism assembly.