Tags

Type your tag names separated by a space and hit enter

2D-Covalent Organic Frameworks with Interlayer Hydrogen Bonding Oriented through Designed Nonplanarity.
J Am Chem Soc. 2020 Jul 16 [Online ahead of print]JA

Abstract

We report the synthesis and characterization of a new class of 2D-covalent organic frameworks, called COFamides, whose layers are held together by amide hydrogen bonds. To accomplish this, we have designed monomers with a nonplanar structure that arises from steric crowding, forcing the amide side groups out of plane with the COF sheets orienting the hydrogen bonds between the layers. The presence of these hydrogen bonds provides significant structural stabilization as demonstrated by comparison to control structures that lack hydrogen bonding capability, resulting in lower surface area and crystallinity. We have characterized both azine and imine-linked versions of these COFs, named COFamide-1 and -2, respectively, for their surface areas, pore sizes, and crystallinity. In addition to these more conventional characterization methods, we also used variable temperature infrared spectroscopy methods and van der Waals density functional calculations to directly observe the presence of hydrogen bonding.

Authors+Show Affiliations

No affiliation info availableNo affiliation info availableDepartment of Physics and Center for Functional Materials, Wake Forest University, 1834 Wake Forest Road, Winston-Salem, North Carolina 27109, United States.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableDepartment of Physics and Center for Functional Materials, Wake Forest University, 1834 Wake Forest Road, Winston-Salem, North Carolina 27109, United States.No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32627546

Citation

Alahakoon, Sampath B., et al. "2D-Covalent Organic Frameworks With Interlayer Hydrogen Bonding Oriented Through Designed Nonplanarity." Journal of the American Chemical Society, 2020.
Alahakoon SB, Tan K, Pandey H, et al. 2D-Covalent Organic Frameworks with Interlayer Hydrogen Bonding Oriented through Designed Nonplanarity. J Am Chem Soc. 2020.
Alahakoon, S. B., Tan, K., Pandey, H., Diwakara, S. D., McCandless, G. T., Grinffiel, D. I., Durand-Silva, A., Thonhauser, T., & Smaldone, R. A. (2020). 2D-Covalent Organic Frameworks with Interlayer Hydrogen Bonding Oriented through Designed Nonplanarity. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.0c03409
Alahakoon SB, et al. 2D-Covalent Organic Frameworks With Interlayer Hydrogen Bonding Oriented Through Designed Nonplanarity. J Am Chem Soc. 2020 Jul 16; PubMed PMID: 32627546.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - 2D-Covalent Organic Frameworks with Interlayer Hydrogen Bonding Oriented through Designed Nonplanarity. AU - Alahakoon,Sampath B, AU - Tan,Kui, AU - Pandey,Haardik, AU - Diwakara,Shashini D, AU - McCandless,Gregory T, AU - Grinffiel,Daniel I, AU - Durand-Silva,Alejandra, AU - Thonhauser,Timo, AU - Smaldone,Ronald A, Y1 - 2020/07/16/ PY - 2020/7/7/pubmed PY - 2020/7/7/medline PY - 2020/7/7/entrez JF - Journal of the American Chemical Society JO - J. Am. Chem. Soc. N2 - We report the synthesis and characterization of a new class of 2D-covalent organic frameworks, called COFamides, whose layers are held together by amide hydrogen bonds. To accomplish this, we have designed monomers with a nonplanar structure that arises from steric crowding, forcing the amide side groups out of plane with the COF sheets orienting the hydrogen bonds between the layers. The presence of these hydrogen bonds provides significant structural stabilization as demonstrated by comparison to control structures that lack hydrogen bonding capability, resulting in lower surface area and crystallinity. We have characterized both azine and imine-linked versions of these COFs, named COFamide-1 and -2, respectively, for their surface areas, pore sizes, and crystallinity. In addition to these more conventional characterization methods, we also used variable temperature infrared spectroscopy methods and van der Waals density functional calculations to directly observe the presence of hydrogen bonding. SN - 1520-5126 UR - https://www.unboundmedicine.com/medline/citation/32627546/A_2D-Covalent_Organic_Framework_with_Interlayer_Hydrogen_Bonding_Oriented_Through_Designed_Non-Planarity L2 - https://doi.org/10.1021/jacs.0c03409 DB - PRIME DP - Unbound Medicine ER -
Try the Free App:
Prime PubMed app for iOS iPhone iPad
Prime PubMed app for Android
Prime PubMed is provided
free to individuals by:
Unbound Medicine.