作者:Kazushi Suzuki、Takashi Ubukata、Yasushi Yokoyama
DOI:10.1039/c1cc16516j
日期:——
Three new photochromic coumarins were synthesized. Fluorescence of the open form of 7-hydroxy-3,4-bisthiazolyl-coumarin increased to 1400% by changing the pH only slightly from 6.05 to 7.58. This was subsequently quenched to 1.5% of the maximum intensity at the UV photostationary state in water–methanol media.
合成了三种新的光致变色香豆素。通过将pH从6.05微调至7.58,仅略微改变pH值,7-羟基-3,4-双噻唑基香豆素的开放形式的荧光增强到了原来的1400%。随后在水中-甲醇介质中,紫外线光稳定状态下,其荧光强度被猝灭至最高强度的1.5%。