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Spiro-Oxaziue染料掺杂高分子材料光致变色效应的研究
引用本文:杜卫冲,刘颂豪.Spiro-Oxaziue染料掺杂高分子材料光致变色效应的研究[J].光学学报,1996,16(12):1714-1718.
作者姓名:杜卫冲  刘颂豪
作者单位:广州华南师范大学
基金项目:94广东省青年自然科学部分资助
摘    要:报道Spiro-Oxaziue染料掺杂高分子(SO/PVA)膜具有很强的可逆光致变色效应,通过对这种高分子膜吸收光谱的测试,证实SO分子具有二个特征吸收带,一个在360nm,另一个在595nm,分别对应于二个分子异构体SO1和SO2,有关这种SO/PVA光致变色过程的研究给出了SO1对紫外光和SO2对可见光(波长在515nm)的吸收系数分别为1.2cm2/J和6×10-2cm2/J,SO2的寿命为38s。最后本文给出了采用这种SO/PVA膜实现紫外-可见光图像转换和空间光调制操作的实验演示结果

关 键 词:光敏材料,光致变色,光致异构效应
收稿时间:1995/9/21

Study on Photochromic Effect in Spiro Oxazine Dye Doped Polymeric Films
Du Weichong,Liu Songhao.Study on Photochromic Effect in Spiro Oxazine Dye Doped Polymeric Films[J].Acta Optica Sinica,1996,16(12):1714-1718.
Authors:Du Weichong  Liu Songhao
Abstract:A reversible strong photochromic phenomenon in spiro oxazine (SO) dye doped polyvinyl alcohol (PVA) films is reported. The absorption spectrum of the SO/PVA film shows that there are two characteristic absorption bands at 360 nm and 595 nm, which correspond to the two different molecular configurations SO 1 and SO 2, respectively. Then temporal behavior of the photo isomerization between the two molecular configurations is also investigated. The molecular absorption coefficients of SO1 to UV light and SO2 to the probe beam at 515 nm are found to be 1.2 cm2/J and 6×10-2 cm2/J, respectively. The life time of SO2 in dark is about 38 seconds. Spatial light modulation and UV-to-visible image conversion using this photochromic film are demonstrated experimently.
Keywords:light sensitive materials    photochromic and photoisomerization effects    
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