Photon-Working Switches by Yasushi Yokoyama & Keitaro Nakatani

Author:Yasushi Yokoyama & Keitaro Nakatani
Language: eng
Format: epub
Publisher: Springer Japan, Tokyo

Fig. 11.5 a Excitation wavelength dependence of the one-photon cycloreversion reaction yield of the closed form of fulgide derivative in n-hexane solution (closed circles). Solid line is the absorption spectrum of the closed form of the fulgide derivative in the same solution. b Relation between the reaction yields of Φ o(S 1) and Φ o(S n) in fulgide derivatives

Fig. 11.6 a Molecular structure and reactions of a diarylethene derivative used. b Optical transmission images of the amorphous film of the compound above, excited with Cr:forsterite laser centered at 1.28 μm. Irradiation of the NIR laser with the intensity of 0.7 nJ/pulse for 50 ms (100 kHz) induces the colorization and the exposure with weaker intensity of 48 pJ/pulse (100 kHz) for 180 s leads to decolorization. c Optical transmission images of the amorphous film (at N C/N O = ca. 1), irradiated by Cr:F laser with the intensity of 66 pJ/pulse at 100 kHz. Exposure time is shown in the figure

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