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. Author manuscript; available in PMC: 2010 Feb 10.
Published in final edited form as: Photochem Photobiol. 2009 Jan–Feb;85(1):21. doi: 10.1111/j.1751-1097.2008.00507.x

Figure 1. Photophysical processes in gold NRs.

Figure 1

NIR irradiation induces the excitation of a LPR mode, resulting mostly in absorption but also some resonant light scattering. An electronic transition from the d- band to sp- band occurs with two-photon absorption, generating an electron-hole pair; recombination of separated charges results in TPL emission. Heat is also generated as a consequence of electron-phonon collisions.