Using electrochemically responsive metal-organic frameworks (MOFs) as host matrices to afford gating properties for functional guests is rather attractive but remains unexplored. Herein, a series of functionalized Zr-MOFs with viologen-like skeletons were created by engineering 2,2'-bipyridinium bay substitution with different alkyl chains. Of the series, benefiting from the enhanced rigidity, the one bearing ,'-ethylene bridge, UiO-67-EE, exhibited the strongest electron deficiency due to the lowest LUMO level, thereby leading to efficient electron transfer and favorable redox activity, which further endowed it with outstanding electrochromic properties. More importantly, the highly electron-deficient framework of UiO-67-EE could allow the accommodation of electron-rich guest molecules through host-guest charge transfer (CT) interactions. By leveraging the electroresponsiveness of the viologen-like functionality, UiO-67-EE served as an adaptable platform for controlled guest release and capture through efficient control of dynamic CT interactions upon stimuli of alternate potentials. This smart electrochemical gating behavior of the host-guest systems was also monitored in real time by distinguishable optical changes of the guests. Besides, it was exploited to develop high-performance sensing platforms by integrating a molecular gate constructed from the target-aptamer complex.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.inorgchem.5c00286 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Band Filling, Electrochemical Reaction, and Re-Entrant Insulating Behavior in Electrolyte-Gated BBL Polymer Semiconductor Films.
ACS Appl Mater Interfaces
February 2025
Department of Chemical Engineering and Materials Science, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, United States.
Electrochemical doping of the n-type polymer poly(benzimidazobenzophenanthroline) (BBL) in contact with ionic liquids reveals a peak in the drain current () vs gate voltage () behavior, i.e., conductivity versus electron density.
View Article and Find Full Text PDFA Solution-Based Deposition Method Enabling Pigment Blue Edible Electrochemical Transistors.
Adv Sci (Weinh)
February 2025
Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Rubattino, 81, Milano, 20134, Italy.
Copper(II) phthalocyanine (CuPc), also known as Pigment Blue 15, is a widely utilized pigment renowned for its exceptional semiconducting properties when refined to electronic-grade purity. Recent studies have confirmed its safety if ingested at doses required for essential active components in edible electronics for advanced gastrointestinal tract monitoring. Since in-body operations impose stringent safety constraints on operational biases, the development of transistors with high transconductance at low voltages is required to ensure adequate amplification gain.
View Article and Find Full Text PDFEctopic mouse TMC1 and TMC2 alone form mechanosensitive channels that are potently modulated by TMIE.
Proc Natl Acad Sci U S A
March 2025
Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Hong Kong 0000, China.
The mechanotransduction (MT) channel expressed in cochlear and vestibular hair cells converts the mechanical stimulation of sound and head movements into electrochemical signals. Recently, TMC1 and TMC2 (TMC1/2) have been recognized as the pore-forming subunit of the MT channel, but TMC1/2 functional expression in heterologous cells-which is critical for unequivocally identifying them as the bona fide pore-forming subunit of the MT channel-has not been achieved because ectopic TMC1/2 become trapped in the ER. Here, we report that adding a Fyn lipidation tag to mouse TMC1/2 (mTMC1/2) drove their cell-surface expression, and, importantly, full-length mTMC1/2 expressed alone functioned as mechanosensitive channels, underscoring the view that TMC1/2 constitute the sole pore-forming subunit of the MT channel.
View Article and Find Full Text PDFBridging Atomic Solvation Environment with Electrochemical Properties for the Bis(trifluoromethylsulfonyl)imide-Based Divalent Cation Electrolytes for the Next-Generation Energy Storage Systems.
ACS Appl Mater Interfaces
March 2025
Department of Chemistry, University of Massachusetts Boston, Boston, Massachusetts 02125, United States.
A deep molecular-level understanding of the multivalent electrolyte and its correlation with the electrochemical properties is crucial for designing optimized electrolytes for next-generation rechargeable batteries. Comprehensive knowledge of the atomic level of the solvation structure and its connection with electrochemical stability and ion transport properties is especially critical. However, the interaction of these three components coupled with clear atomistic insights is lacking in the literature.
View Article and Find Full Text PDFElectrochemical Gating of Host-Guest Charge-Transfer Interactions Enabled by Viologen-like Functionality Engineered Metal-Organic Frameworks.
Inorg Chem
March 2025
School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.
Using electrochemically responsive metal-organic frameworks (MOFs) as host matrices to afford gating properties for functional guests is rather attractive but remains unexplored. Herein, a series of functionalized Zr-MOFs with viologen-like skeletons were created by engineering 2,2'-bipyridinium bay substitution with different alkyl chains. Of the series, benefiting from the enhanced rigidity, the one bearing ,'-ethylene bridge, UiO-67-EE, exhibited the strongest electron deficiency due to the lowest LUMO level, thereby leading to efficient electron transfer and favorable redox activity, which further endowed it with outstanding electrochromic properties.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!