Reticular synthesis of covalent organic borosilicate frameworks.
This paper reports the synthesis and characterization of a new crystalline 3D covalent organic framework, COF-202: [C(C6H4)4]3[B3O6 (tBuSi)2]4, formed from condensation of a divergent boronic acid, tetra(4-dihydroxyborylphenyl)methane, and tert-butylsilane triol, tBuSi(OH)3. This framework is constructed through strong covalent bonds (Si-O, B-O) that link triangular and tetrahedral building units to form a structure based on the carbon nitride topology. COF-202 demonstrates high thermal stability, low density, and high porosity with a surface area of 2690 m2 g-1. The design and synthesis of COF-202 expand the type of linkage that could be used to crystallize new materials with extended covalent organic frameworks.
Hunt
Joseph R
JR
Center for Reticular Chemistry, Department of Chemistry and Biochemistry, University of California-Los Angeles, 607 East Charles E. Young Drive, Los Angeles, California 90095, USA.
Doonan
Christian J
CJ
LeVangie
James D
JD
Côté
Adrien P
AP
Yaghi
Omar M
OM