Crystallization of high aspect ratio HKUST-1 thin films in nanoconfined channels for selective small molecule uptake.

ABSTRACT: We present the ability to create unique morphologies of a prototypical metal organic framework (MOF), HKUST-1, by carrying out its crystallization within a set of nano-confined fluidic channels. These channels are fabricated on cyclic olefin copolymer by the high-fidelity hot embossing imprinting method. The picoliter volume synthesis in the nanochannels is hypothesized to bias the balance between nucleation and growth rates to obtain high aspect ratio large-crystalline domains of HKUST-1, which are grown in defined morphologies due to the patterned nanochannels. Confined crystal growth is achieved in nanofluidic channels as shallow as 50 nm. HKUST-1 crystalline domains with aspect ratios greater than 2500, and lengths up to 144 μm are obtained using the nanochannels, exceeding values obta

SUBMITTER: Guthrie S 

PROVIDER: S-EPMC9418888 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature