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Oligo-2-aminopyridine derivative-protected gold nanoparticles (OAP-Au) with narrow size distribution have been prepared via reduction of HAuCl 4 by NaBH 4 using a two-phase method. TEM image shows that the diameters of these particles range from 2 to 5nm and the average diameter is 3.5nm. The optical non-linearities of OAP-Au in chloroform were determined by the Z-scan technique with...
Few studies have been carried out on near-IR picosecond optical nonlinearity and excited-state absorption of stable gold nanoparticles. In this article, the near-IR picosecond optical nonlinearity from 1-dodecanethiol protected gold nanoparticles (Nano-1) was investigated by using Z-scan technique. The incident laser is a Q-switched/mode-locked Nd:YAG pulses laser with a duration of 35 ps at 1064...
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