%0 Journal Article %A Yang, Jingjing %A Trickett, Christopher A. %A Alahmadi, Salman B. %A Alshammari, Ahmad S. %A Yaghi, Omar M. %D 2017 %T Calcium l‑Lactate Frameworks as Naturally Degradable Carriers for Pesticides %U https://acs.figshare.com/articles/journal_contribution/Calcium_l_Lactate_Frameworks_as_Naturally_Degradable_Carriers_for_Pesticides/5103040 %R 10.1021/jacs.7b04542.s001 %2 https://acs.figshare.com/ndownloader/files/8658514 %K OH %K H 2 O %K CH %K air flow rate %K acetate %K MOF -1201 %K l-lactate %X Two porous, chiral metal–organic frameworks (MOFs), Ca14(l-lactate)20(acetate)8(C2H5OH)­(H2O) (MOF-1201) and Ca6(l-lactate)3(acetate)9(H2O) (MOF-1203), are constructed from Ca2+ ions and l-lactate [CH3CH­(OH)­COO], where Ca2+ 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 Ca2+ and lactate. They show permanent porosity of 430 and 160 m2 g–1, 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 cm3 min–1). The hydrolysis of MOF-1201 in water makes it the first example of a degradable porous solid carrier for such fumigants. %I ACS Publications