Similarities in sizes,s hapes,a nd physical properties between carbon dioxide (CO 2 )a nd acetylene (C 2 H 2 )m ake it ag reat challenge to separate the major impurity CO 2 from products in C 2 H 2 production. The use of porous materials is an appealing path to replace current very costly and energyconsuming technologies,s uch as solvent extraction and cryogenic distillation;h owever,h igh CO 2 /C 2 H 2 uptake ratio with minor adsorption of C 2 H 2 at standardp ressure was only unexpectedly observed in scarce examples in recent years although the related researchstarted early at 1950s,and general design strategies to realizet his aim are still absent. This work has successfully developed an efficient PIET strategy and obtained the second highest CO 2 /C 2 H 2 adsorption ratio for porous materials in ap roof-of-concept MOF with ap hotochromism-active bipyridinium zwitterion. An unprecedented photocontrollable gate effect, owing to changeofinterannular dihedral after photoinduced generation of radical species,was also observed for the first time.T hese findings will inspire design and synthesis of porous materials for high efficient gas adsorption and separation.
DFT
calculations have been carried out to study the reaction mechanism
of copper-catalyzed three-component boracarboxylation of alkene with
CO2 and diboron. The competing reaction pathways involving
two components have also been investigated for comparison. Through
this theoretical study deep mechanistic insight on this multicomponent
reaction is provided.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.