| Photochromic materials have wide application prospects, such as in theinformation storage, optical switch, color glasses and so on, and have practicalapplication value. Naphthopyran with a good fade rate caused people’s wideattention, whereas there are just few reports about naphthopyran-grafted hydrogensilicone oil.This thesis mainly designed and synthesized two naphthopyran polymers.Naphthopyran compound with double bond was grafted on hydrogen silicone oil toprepare polymer by the hydrosilylation reaction. Their photochromic properties weremainly evaluated using changes of absorption spectra after UV light irradiation, rateof heat achromatic, fatigue risistance and decolorization kinetics.In this paper, monomers and polymers were characterized by means of NMR(1H NMR), gel permeation chromatography and UV-vis absorption spectra. Opticalperformance was measured under the irradiation of the CHF-XM35-500W xenonlamp with a parallel light source system. |
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