L-乳酸钙框架作为可生物降解的农药载体。
Calcium l-Lactate Frameworks as Naturally Degradable Carriers for Pesticides.
机构信息
Department of Chemistry, University of California, Berkeley , Materials Sciences Division, Lawrence Berkeley National Laboratory, and Kavli Energy NanoSciences Institute, Berkeley, California 94720, United States.
King Abdulaziz City for Science and Technology (KACST) , Riyadh 11442, Saudi Arabia.
出版信息
J Am Chem Soc. 2017 Jun 21;139(24):8118-8121. doi: 10.1021/jacs.7b04542. Epub 2017 Jun 13.
Two porous, chiral metal-organic frameworks (MOFs), Ca(l-lactate)(acetate)(CHOH)(HO) (MOF-1201) and Ca(l-lactate)(acetate)(HO) (MOF-1203), are constructed from Ca ions and l-lactate [CHCH(OH)COO], where Ca ions are bridged by the carboxylate and hydroxyl groups of lactate and the carboxylate group of acetate to give a three-dimensional arrangement of Ca(-COO, -OH) polyhedra supporting one-dimensional pores with apertures and internal diameters of 7.8 and 9.6 Å (MOF-1201) and 4.6 and 5.6 Å (MOF-1203), respectively. These MOFs represent the first examples of extended porous structures based on Ca and lactate. They show permanent porosity of 430 and 160 m g, respectively, and can encapsulate an agriculturally important fumigant, cis-1,3-dichloropropene. MOF-1201 shows a 100 times lower release rate compared with liquid cis-1,3-dichloropropene under the same test conditions (25 °C, air flow rate of 1 cm min). The hydrolysis of MOF-1201 in water makes it the first example of a degradable porous solid carrier for such fumigants.
两种多孔手性金属有机骨架（MOFs），Ca(l-乳酸)(醋酸盐)(CHOH)(HO)（MOF-1201）和 Ca(l-乳酸)(醋酸盐)(HO)（MOF-1203），是由 Ca 离子和 l-乳酸[CHCH(OH)COO]构建而成的，其中 Ca 离子通过乳酸的羧基和羟基以及醋酸盐的羧基桥接，形成了一个三维排列的 Ca(-COO，-OH)多面体，支撑着具有 7.8 和 9.6 Å（MOF-1201）和 4.6 和 5.6 Å（MOF-1203）孔径和内径的一维孔。这些 MOFs 代表了基于 Ca 和乳酸的扩展多孔结构的第一个例子。它们分别具有 430 和 160 m g 的永久孔隙率，并能封装一种农业上重要的熏蒸剂顺-1,3-二氯丙烯。在相同的测试条件（25°C，空气流速为 1 cm min）下，与液态顺-1,3-二氯丙烯相比，MOF-1201 的释放速率低 100 倍。MOF-1201 在水中的水解使其成为此类熏蒸剂的第一个可降解多孔固体载体的例子。
Zotero 插件