Journal article
Emissive Single-Crystalline Boroxine-Linked Colloidal Covalent Organic Frameworks
Journal of the American Chemical Society, v 141(50), pp 19728-19735
18 Dec 2019
PMID: 31743009
Abstract
The synthesis of periodic two-dimensional (2D) polymers and characterization of their optoelectronic behaviors are challenges at the forefront of polymer chemistry and materials science. Recently, we showed that layered 2D polymers known as 2D covalent organic frameworks (COFs) can be synthesized as single crystals by preparing COF particles as colloidal suspensions. Here we expand this approach from the condensation of boronic acids and catechols to the dehydrative trimerization of polyboronic acids. The resulting boroxine-linked colloids are the next class of 2D COFs to be obtained as single-crystalline particles, as demonstrated here for four 2D COFs and one 3D COF. Colloidal stabilization enables detailed structural analysis by synchrotron X-ray diffraction and high-resolution transmission electron microscopy. Solution fluorescence spectroscopy revealed that the COF crystallites are highly emissive compared to their respective monomer solutions. Excitation-emission matrix fluorescence spectroscopy indicated that the origin of this enhanced emission can be attributed to through-space communication of chromophores between COF sheets. These observations will motivate the development of colloidal COF systems as a platform to organize functional aromatic systems into precise and predictable assemblies with emergent properties.
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Details
- Title
- Emissive Single-Crystalline Boroxine-Linked Colloidal Covalent Organic Frameworks
- Creators
- Austin M. Evans - Northwestern UniversityIoannina Castano - Northwestern UniversityAlexandra Brumberg - Northwestern UniversityLucas R. Parent - Northwestern UniversityAmanda R. Corcos - Northwestern UniversityRebecca L. Li - Northwestern UniversityNathan C. Flanders - Northwestern UniversityDavid J. Gosztola - Argonne National LaboratoryNathan C. Gianneschi - Northwestern UniversityRichard D. Schaller - Northwestern UniversityWilliam R. Dichtell - Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USAArgonne National Lab. (ANL), Argonne, IL (United States)
- Publication Details
- Journal of the American Chemical Society, v 141(50), pp 19728-19735
- Publisher
- Amer Chemical Soc
- Number of pages
- 8
- Grant note
- International Institute for Nanotechnology (IIN) P30 CA060553 / NCI CCSG Keck Foundation; W.M. Keck Foundation W911NF-15-1-0447 / Army Research Office F32EB021859 / National Institute of Biomedical Imaging and Bioengineering of the National Institutes of Health; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Biomedical Imaging & Bioengineering (NIBIB) DGE-1324585 / National Science Foundation Graduate Research Fellowship; National Science Foundation (NSF) DE-AC02-06CH11357 / U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences; United States Department of Energy (DOE) National Institutes of Health; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA DMREF-1629383 / National Science Foundation; National Science Foundation (NSF) NSF ECCS-1542205 / Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:000503917800031
- Scopus ID
- 2-s2.0-85076251309
- Other Identifier
- 991022053867504721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary