几种溶液滤光片的制备及其在苯基偶氮萘光化学性质测量中的应用

The preparation of four liquid optical filters and the application in the photochemical study of phenylazonaphthalene

将几种常见无机化合物的水溶液通过一定的组合,应用紫外可见吸收光谱法筛选出四种具有一定滤光宽度的溶液滤光片:①40% 硝酸铜水溶液-40% 硝酸钴水溶液(380±30 nm ,41% );②50% 三氯化钴-5% 硫酸铬水溶液(325±40 nm ,42% );③40% 氯化镍-40% 硝酸铜水溶液(500±35 nm ,46% );④40% 氯化镍-5% 硝酸铬水溶液(330±15 nm ,18% ;500±40 nm ,40% ).将氢灯光束通过滤光片①滤光诱导6-[4-(4-十二烷基苯基偶氮基)-1-萘氧基]己酸(Ⅰ)在氯仿溶液中从反式→顺式的异构化。

Four liquid optical filters are obtained by different combination of several inorganic compound aqueous solutions: ① 40% Co(NO 3) 3+40% CuSO 4 (transparent region 380±30 nm, transmittancy 41%); ② 50% Co(NO 3) 3 + 5% Cr 2(SO 4) 3 (380±40 nm,42%); ③ 40% NiCl 2 + 40% Cu(NO 3) 2 (500±35 nm, 46%); ④ 40% NiCl 2 +5% Cr(NO 3) 3 (330±15 nm, 18%; 500±40 nm, 40%), respectively. The trans to cis isomerization of 6 [4 (4 dodecylphenylazo) 1 naphthalenoxy]hexanoic acid (Ⅰ) is induced under the irradiation of hydrogen lamp light through the filter ①, the highest yield of cis isomer is obtained. In dark, the photochemical cis to trans conversion acts in accordance with the first order kinetics with a apparent rate constant 5.7×10 -4 s -1 .