锰(Ⅱ)-戊二酮多环配合物的合成与光漂白性能

Synthesis of Mn(Ⅱ)-Bispidone Complex and Its Photobleaching Performance

1,3-丙酮二羧酸二甲酯与吡啶-2-甲醛、甲醛、甲胺经Mannich反应生成了一种含戊二酮单元的刚性多环化合物2,4-二（2-吡啶基）-3,7-二氮杂双环[3.3.1]壬烷-N,N-二甲基-1,5-二甲酸甲酯,其结构经1 H-NMR和MS表征。该化合物为配体与锰（Ⅱ）离子络合,反应得到一种锰（Ⅱ）配合物,通过紫外吸收光谱表明,锰（Ⅱ）配合物在233~286nm范围内有较强的吸收,最大吸收峰为258nm;光漂白测试的结果表明,锰（Ⅱ）配合物与洗涤剂的质量比为0.1%~0.3%时,在10~30°C的温度范围内经洗涤和光照,可去除棉布上的红墨水污渍。

A rigid bispidone,2,4-bis-（2-pyridin）-3,7-diazabicyclo[3.3.1]nonane-N,N-1,5-dicarboxylate was synthesized by acetone-1,3-dicarboxylate, 2-picolylamine, methylamine and formaldehyde via Mannich reactions.The bispidone was characterized by 1 H-NMR and MS,and was further combined with Mn（Ⅱ）Cl2to afford a manganese（Ⅱ）-complex.The UV-vis spectrum of the complex showed a strong absorption at the range of 233—286nm,and the maximum was at 258nm.When the complex was used together with a certain amount of detergent,it could well bleach the red-ink stains on cotton textile.The results indicated that the complex could perform a favorable photobleaching effect on a low mass fraction（0.1%—0.3%）,a low washing temperature（10—30°C）with sunshine.