Trends in the thermal stability of two-dimensional covalent organic frameworks

Faraday Discussions
Austin M EvansWilliam R Dichtel

Abstract

Two-dimensional covalent organic frameworks (2D COFs) are synthetically diverse, layered macromolecules. Their covalent lattices are thought to confer high thermal stability, which is typically evaluated with thermogravimetric analysis (TGA). However, TGA measures the temperature at which volatile degradation products are formed and is insensitive to changes of the periodic structure of the COF. Here, we study the thermal stability of ten 2D COFs using a combination of variable-temperature X-ray diffraction, TGA, diffuse reflectance infrared spectroscopy, and density functional theory calculations. We find that 2D COFs undergo a general two-step thermal degradation process. At the first degradation temperature, 2D COFs lose their crystallinity without chemical degradation. Then, at higher temperatures, they chemically degrade into volatile byproducts. Several trends emerge from this exploration of 2D COF stability. Boronate ester-linked COFs are generally more thermally stable than comparable imine-linked COFs. Smaller crystalline lattices are more robust to thermal degradation than chemically similar larger lattices. Finally, pore-functionalized COFs degrade at significantly lower temperatures than their unfunctionalized analo...Continue Reading

References

Oct 28, 1996·Physical Review Letters·J P PerdewM Ernzerhof
Nov 19, 2005·Science·Adrien P CôtéOmar M Yaghi
Apr 14, 2007·Science·Hani M El-KaderiOmar M Yaghi
Mar 14, 2009·Journal of the American Chemical Society·Fernando J Uribe-RomoOmar M Yaghi
Dec 3, 2010·Nature Chemistry·Christian J DoonanOmar M Yaghi
Nov 17, 2011·Nature Communications·Atsushi NagaiDonglin Jiang
Jul 24, 2012·Chemical Society Reviews·Xiao FengDonglin Jiang
Oct 13, 2012·Chemical Society Reviews·San-Yuan Ding, Wei Wang
Feb 7, 2013·Chemistry : a European Journal·Mohammad Gulam RabbaniHani M El-Kaderi
Sep 24, 2013·Journal of the American Chemical Society·David N Bunck, William R Dichtel
Oct 24, 2013·Journal of the American Chemical Society·Catherine R DeBlaseWilliam R Dichtel
Nov 3, 2015·Chemical Communications : Chem Comm·Payam PayamyarA Dieter Schlüter
Sep 14, 2016·Journal of the American Chemical Society·Xiuren WangYong Cui
Jan 31, 2017·Chemistry : a European Journal·Sampath B AlahakoonRonald A Smaldone
Aug 31, 2017·Journal of the American Chemical Society·Edon Vitaku, William R Dichtel
Oct 27, 2017·Angewandte Chemie·Bappaditya GoleFlorian Beuerle
Dec 19, 2017·Journal of the American Chemical Society·Torben SickThomas Bein
Jul 19, 2018·Journal of the American Chemical Society·Hongwei FanJürgen Caro
Sep 27, 2018·Journal of the American Chemical Society·Woojung JiWilliam R Dichtel
Feb 13, 2019·Chemical Communications : Chem Comm·Michael C DaughertyWilliam R Dichtel
Apr 12, 2019·Journal of the American Chemical Society·Xiaowei WuYong Cui
Apr 27, 2019·Chemical Society Reviews·Shushan YuanBart Van der Bruggen
Jun 30, 2019·Journal of the American Chemical Society·Torben SickDana D Medina
Nov 20, 2019·Journal of the American Chemical Society·Austin M EvansWilliam R Dichtel
Jan 3, 2020·Journal of the American Chemical Society·Samik JhulkiSeth R Marder

❮ Previous
Next ❯

Citations

Nov 7, 2020·Chemical Society Reviews·Frederik Haase, Bettina V Lotsch
Jul 25, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Priyanka VermaRobert Raja
Sep 9, 2021·Journal of the American Chemical Society·Sebastian T EmmerlingBettina V Lotsch

❮ Previous
Next ❯

Methods Mentioned

BETA
X-ray
infrared spectroscopy

Software Mentioned

Materials Studio Reflex Plus Module
CRYSTAL17
Materials Studio

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.