Mechanics Department, Technical University of Cluj-Napoca, 400641 Cluj-Napoca, Romania.
Spectrochim Acta A Mol Biomol Spectrosc. 2010 Feb;75(2):507-10. doi: 10.1016/j.saa.2009.10.017. Epub 2009 Oct 21.
Transparent glasses were prepared by conventional melting-quenching method in the xMoO(3).(100-x)[3B(2)O(3).PbO] system where 0<or=x<or=15 mol%. By increasing the MoO(3) content up to 20 mol% the PbMoO(4) crystalline phase appears. These systems exhibit a photochromic effect which can be induced through laser exposures (lambda=633 nm) directly on the bulk sample. Structural investigations by FTIR spectroscopy show that the photosensitive effect is due to a reduction of Mo(6+) to Mo(4+) and/or Mo(5+) promoted by the oxidation of Pb(2+) and some structural changes of the borate network.
通过传统的熔融淬火法制备了 xMoO(3).(100-x)[3B(2)O(3).PbO]系统的透明玻璃，其中 0<or=x<or=15 mol%。通过将 MoO(3)含量增加到 20 mol%，出现了 PbMoO(4)晶相。这些系统表现出光致变色效应，可以通过直接在块状样品上进行激光照射（lambda=633nm）来诱导。通过傅里叶变换红外光谱法的结构研究表明，光敏效应是由于 Mo(6+)被还原为 Mo(4+)和/或 Mo(5+)，这是由 Pb(2+)的氧化和硼酸盐网络的一些结构变化所促进的。
