Water soluble photoactive cellulose derivatives: synthesis and characterization of mixed 2-[(4-methyl-2-oxo-2H-chromen-7-yl)oxy]acetic acid–(3-carboxypropyl)trimethylammonium chloride esters of cellulose
Water soluble photoactive cellulose derivatives: synthesis and characterization of mixed 2-[(4-methyl-2-oxo-2H-chromen-7-yl)oxy]acetic acid–(3-carboxypropyl)trimethylammonium chloride esters of cellulose
复制标题
水溶性光活性纤维素衍生物：纤维素的混合2-[(4-甲基-2-氧代-2H-苯并-7-基)氧基]乙酸×(3-羧丙基)三甲基氯化铵酯的合成和表征
DOI：
10.1007/s10570-012-9708-2
复制
发表时间：
2012
期刊：
影响因子：
5.7
通讯作者：
T. Heinze
中科院分区：
文献类型：
--
作者：
H. Wondraczek;A. Pfeifer;T. Heinze
以2-[（4-甲基-2-氧代-2H-苯并吡喃-7-基）氧基]乙酸为原料，经N，N′-羰基二咪唑活化后，与纤维素进行温和酯化反应，制备了纤维素光活性衍生物。随后，用阳离子羧酸（3-羧丙基）三甲基氯化铵进行改性。因此，获得了用高量的光化学活性色烯部分修饰的水溶性聚电解质。通过核磁共振和红外光谱对新型多糖酯和聚电解质的结构进行了表征。此外，光引发的光活性聚电解质的色烯部分的光二聚化的研究通过在溶解状态下的UV-Vis光谱。所观察到的光化学可用于控制新多糖衍生物的性质，因此在智能材料的设计中具有重要意义。
Photoactive derivatives of cellulose were prepared by a mild esterification of the biopolymer with 2-[(4-methyl-2-oxo-2H-chromen-7-yl)oxy]acetic acid via the activation of the carboxylic acid withN,N′-carbonyldiimidazole. Subsequently, modification with the cationic carboxylic acid (3-carboxypropyl)trimethylammonium chloride was carried out. Thus, water soluble polyelectrolytes decorated with high amounts of photochemically active chromene moieties were obtained. The structures of the novel polysaccharide esters and the polyelectrolytes were evaluated by means of NMR and IR spectroscopy. Moreover, the light triggered photodimerization of the chromene moieties of the photoactive polyelectrolytes was studied by means of UV–Vis spectroscopy in the dissolved state. The photochemistry observed may be used to control the properties of the new polysaccharide derivatives and are thus of interest in the design of smart materials.
影响因子：
11.2
作者：
Wondraczek, Holger;Elschner, Thomas;Heinze, Thomas
通讯作者：
Heinze, Thomas
DOI：
--
发表时间：
1995
期刊：
影响因子：
--
作者：
M. Terbojevich;A. Cosani;M. Camilot;B. Focher
通讯作者：
B. Focher
光响应高分子材料
DOI：
--
发表时间：
1995
期刊：
影响因子：
--
作者：
O. Pieroni;F. Ciardelli
通讯作者：
F. Ciardelli