Crosslinker Chemistry Determines the Uptake Potential of Perfluorinated Alkyl Substances by β-Cyclodextrin Polymers

2018 ◽  
Author(s):  
Leilei Xiao ◽  
Casey Ching ◽  
Yuhan Ling ◽  
Mohammadreza Nasiri ◽  
Max Justin Klemes ◽  
...  
Keyword(s):  
Binding Affinity ◽  
Polymer Networks ◽  
Cyclodextrin Polymer ◽  
Perfluorinated Alkyl Substances ◽  
Cyclodextrin Polymers

This work describes several crosslinked β-cyclodextrin polymer networks and correlates the crosslinker chemistry with binding affinity for per- and polyfluorinated alkyl substances (PFASs), including PFOA and PFOS.

Crosslinker Chemistry Determines the Uptake Potential of Perfluorinated Alkyl Substances by β-Cyclodextrin Polymers

2018 ◽  
Author(s):  
William Dichtel ◽  
Leilei Xiao
Keyword(s):  
Binding Affinity ◽  
Polymer Networks ◽  
Cyclodextrin Polymer ◽  
Perfluorinated Alkyl Substances ◽  
Cyclodextrin Polymers

This work describes several crosslinked β-cyclodextrin polymer networks and correlates the crosslinker chemistry with binding affinity for per- and polyfluorinated alkyl substances (PFASs), including PFOA and PFOS.

Crosslinker Chemistry Determines the Uptake Potential of Perfluorinated Alkyl Substances by β-Cyclodextrin Polymers

2018 ◽  
Author(s):  
Leilei Xiao ◽  
Casey Ching ◽  
Yuhan Ling ◽  
Mohammadreza Nasiri ◽  
Max Justin Klemes ◽  
...  
Keyword(s):  
Binding Affinity ◽  
Polymer Networks ◽  
Cyclodextrin Polymer ◽  
Perfluorinated Alkyl Substances ◽  
Cyclodextrin Polymers

This work describes several crosslinked β-cyclodextrin polymer networks and correlates the crosslinker chemistry with binding affinity for per- and polyfluorinated alkyl substances (PFASs), including PFOA and PFOS.

scholarly journals Phenolation of cyclodextrin polymers controls their lead and organic micropollutant adsorption

2018 ◽  
Vol 9 (47) ◽  
pp. 8883-8889 ◽  
Author(s):  
Max J. Klemes ◽  
Yuhan Ling ◽  
Marta Chiapasco ◽  
Alaaeddin Alsbaiee ◽  
Damian E. Helbling ◽  
...  
Keyword(s):  
Polymer Networks ◽  
Cyclodextrin Polymer ◽  
Cyclodextrin Polymers

Lead and superior micropollutant sequestration by phenolated cyclodextrin polymer networks.

scholarly journals Characterization and adsorption properties of cross-linked yeast/β-cyclodextrin polymers for Pb(ii) and Cd(ii) adsorption

RSC Advances ◽  
2018 ◽  
Vol 8 (55) ◽  
pp. 31542-31554 ◽  
Author(s):  
Zhengyang Duan ◽  
Mingyao Song ◽  
Tianguo Li ◽  
Shuli Liu ◽  
Xiaojun Xu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Properties ◽  
Cyclodextrin Polymer ◽  
Cyclodextrin Polymers

A cross-linked yeast/β-cyclodextrin polymer (Y–β-CDP) was synthesized to remove Pb(ii) and Cd(ii) from aqueous solution.

scholarly journals Internal and external catalysis in boronic ester networks

2021 ◽  
Author(s):  
Boyeong Kang ◽  
Julia Kalow
Keyword(s):  
Mechanical Properties ◽  
Binding Affinity ◽  
Polymer Networks ◽  
Model Systems ◽  
Self Healing ◽  
Dynamic Materials ◽  
Boronic Ester ◽  
Rate Acceleration ◽  
Exchange Spectroscopy ◽  
Kinetics Of

In dynamic materials, the reversible condensation between boronic acids and diols provides adaptability, self-healing ability, and responsiveness to small molecules and pH. Recent work has shown that the thermodynamics and kinetics of bond exchange determine the mechanical properties of dynamic polymer networks. However, prior studies have focused on how structural and environmental factors influence boronic acid–diol binding affinity, and design rules for tuning the kinetics of this dynamic bond are lacking. In this work, we investigate the effects of diol (or polyol) structure and salt additives on the rate of bond exchange, binding affinity, and the mechanical properties of the corresponding polymer networks. To better mimic the environment of polymer networks in our small-molecule model systems, we incorporated proximal amide groups, which are used to conjugate diols to polymers, and included salts commonly found in buffers. Using one-dimensional selective exchange spectroscopy (1D EXSY), we find that both proximal amides and buffering anions induce significant rate acceleration consistent with internal and external catalysis, respectively. This rate acceleration is reflected in the stress relaxation of gels formed using PEG modified with different alcohols, and in the presence of salts containing acetate or phosphate. These findings contribute to the fundamental understanding of the boronic ester dynamic bond and offer new molecular strategies to tune the macromolecular properties of dynamic materials.

scholarly journals Cyclodextrin polymer networks decorated with subnanometer metal nanoparticles for high-performance low-temperature catalysis

2019 ◽  
Vol 5 (11) ◽  
pp. eaax6976 ◽  
Author(s):  
Tiefan Huang ◽  
Guan Sheng ◽  
Priyanka Manchanda ◽  
Abdul H. Emwas ◽  
Zhiping Lai ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Nanoparticles ◽  
Rational Design ◽  
Polymer Network ◽  
Polymer Networks ◽  
Coupling Reaction ◽  
High Catalytic Activity ◽  
Support Materials ◽  
Cyclodextrin Polymer ◽  
Coordination Sites

The synthesis of support materials with suitable coordination sites and confined structures for the controlled growth of ultrasmall metal nanoparticles is of great importance in heterogeneous catalysis. Here, by rational design of a cross-linked β-cyclodextrin polymer network (CPN), various metal nanoparticles (palladium, silver, platinum, gold, and rhodium) of subnanometer size (<1 nm) and narrow size distribution are formed via a mild and facile procedure. The presence of the metal coordination sites and the network structure are key to the successful synthesis and stabilization of the ultrasmall metal nanoparticles. The as-prepared CPN, loaded with palladium nanoparticles, is used as a heterogeneous catalyst and shows outstanding catalytic performance in the hydrogenation of nitro compounds and Suzuki-Miyaura coupling reaction under mild conditions. The CPN support works synergistically with the metal nanoparticles, achieving high catalytic activity and selectivity. In addition, the catalytic activity of the formed catalyst is controllable.

scholarly journals Reduction of a Tetrafluoroterephthalonitrile‐β‐Cyclodextrin Polymer to Remove Anionic Micropollutants and Perfluorinated Alkyl Substances from Water

2019 ◽  
Vol 58 (35) ◽  
pp. 12049-12053 ◽  
Author(s):  
Max J. Klemes ◽  
Yuhan Ling ◽  
Casey Ching ◽  
Congyue Wu ◽  
Leilei Xiao ◽  
...  
Keyword(s):  
Cyclodextrin Polymer ◽  
Perfluorinated Alkyl Substances

scholarly journals Reduction of a Tetrafluoroterephthalonitrile‐β‐Cyclodextrin Polymer to Remove Anionic Micropollutants and Perfluorinated Alkyl Substances from Water

2019 ◽  
Vol 131 (35) ◽  
pp. 12177-12181 ◽  
Author(s):  
Max J. Klemes ◽  
Yuhan Ling ◽  
Casey Ching ◽  
Congyue Wu ◽  
Leilei Xiao ◽  
...  
Keyword(s):  
Cyclodextrin Polymer ◽  
Perfluorinated Alkyl Substances

Cross-linker Chemistry Determines the Uptake Potential of Perfluorinated Alkyl Substances by β-Cyclodextrin Polymers

2019 ◽  
Vol 52 (10) ◽  
pp. 3747-3752 ◽  
Author(s):  
Leilei Xiao ◽  
Casey Ching ◽  
Yuhan Ling ◽  
Mohammadreza Nasiri ◽  
Max J. Klemes ◽  
...  
Keyword(s):  
Perfluorinated Alkyl Substances ◽  
Cyclodextrin Polymers ◽  
Cross Linker

β-Cyclodextrin polymer networks stabilized gold nanoparticle with superior catalytic activities

Nano Research ◽  
2020 ◽  
Author(s):  
Yong Zhang ◽  
Bing Hu ◽  
Xiao-Mei Cao ◽  
Liang Luo ◽  
Yu Xiong ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Polymer Networks ◽  
Catalytic Activities ◽  
Cyclodextrin Polymer
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