scholarly journals Halogen bonding Strapped Porphyrin BODIPY Rotaxanes for Dual Optical and Electrochemical Anion Sensing

2021 ◽  
Author(s):  
Yuen Cheong Tse ◽  
Robert Hein ◽  
Edward J. Mitchell ◽  
Zongyao Zhang ◽  
Paul D. Beer
Keyword(s):  
Halogen Bonding ◽  
Anion Sensing

scholarly journals Facile and Reliable Emission‐Based Nanomolar Anion Sensing by Luminescent Iridium Receptors Featuring Chelating Halogen‐Bonding Sites

2020 ◽  
Vol 26 (64) ◽  
pp. 14679-14687
Author(s):  
Robin Kampes ◽  
Ronny Tepper ◽  
Helmar Görls ◽  
Peter Bellstedt ◽  
Michael Jäger ◽  
...  
Keyword(s):  
Halogen Bonding ◽  
Anion Sensing

Halogen bonding-enhanced electrochemical halide anion sensing by redox-active ferrocene receptors

2015 ◽  
Vol 51 (78) ◽  
pp. 14640-14643 ◽  
Author(s):  
Jason Y. C. Lim ◽  
Matthew J. Cunningham ◽  
Jason J. Davis ◽  
Paul D. Beer
Keyword(s):  
Hydrogen Bonding ◽  
Halogen Bonding ◽  
Anion Receptors ◽  
Halide Anion ◽  
Anion Sensing ◽  
Redox Active

The first redox-active halogen bonding anion receptors display larger electrochemical voltammetric responses to halide binding compared to their hydrogen bonding analogues.

scholarly journals Enhanced Voltammetric Anion Sensing at Halogen and Hydrogen Bonding Ferrocenyl SAMs

2020 ◽  
Author(s):  
Robert Hein ◽  
Xiaoxiong Li ◽  
Paul D. Beer ◽  
Jason J Davis
Keyword(s):  
Signal Transduction ◽  
Hydrogen Bonding ◽  
Real Life ◽  
Halogen Bonding ◽  
Self Assembled Monolayers ◽  
Similar Response ◽  
Binding Motifs ◽  
Anion Sensing ◽  
Redox Active ◽  
Assembled Monolayers

Halogen bonding mediated electrochemical anion sensing has very recently been established as a potent platform for the selective and sensitive detection of anions, although the principles that govern binding and subsequent signal transduction remain poorly understood. Herein we address this challenge by providing a comprehensive study of novel redox-active halogen bonding (XB) and hydrogen bonding (HB) ferrocene-isophthalamide-(iodo)triazole receptors in solution and at self-assembled monolayers (SAMs). Under diffusive conditions the sensory performance of the XB sensor was significantly superior. In molecular films the XB and HB binding motifs both display a notably enhanced, but similar, response to specific anions. Importantly, the enhanced response of these films is rationalised by a consideration of the (interfacial) dielectric microenvironment. These effects, and the resolved relationship between anion binding and signal transduction, underpin an improved fundamental understanding of anion sensing at redox-active interfaces which will benefit not just the development of more potent, real-life relevant sensors, but also new tools to study host-guest interactions at interfaces.

scholarly journals Enhanced Voltammetric Anion Sensing at Halogen and Hydrogen Bonding Ferrocenyl SAMs

2020 ◽  
Author(s):  
Robert Hein ◽  
Xiaoxiong Li ◽  
Paul D. Beer ◽  
Jason J Davis
Keyword(s):  
Signal Transduction ◽  
Hydrogen Bonding ◽  
Real Life ◽  
Halogen Bonding ◽  
Self Assembled Monolayers ◽  
Similar Response ◽  
Binding Motifs ◽  
Anion Sensing ◽  
Redox Active ◽  
Assembled Monolayers

Halogen bonding mediated electrochemical anion sensing has very recently been established as a potent platform for the selective and sensitive detection of anions, although the principles that govern binding and subsequent signal transduction remain poorly understood. Herein we address this challenge by providing a comprehensive study of novel redox-active halogen bonding (XB) and hydrogen bonding (HB) ferrocene-isophthalamide-(iodo)triazole receptors in solution and at self-assembled monolayers (SAMs). Under diffusive conditions the sensory performance of the XB sensor was significantly superior. In molecular films the XB and HB binding motifs both display a notably enhanced, but similar, response to specific anions. Importantly, the enhanced response of these films is rationalised by a consideration of the (interfacial) dielectric microenvironment. These effects, and the resolved relationship between anion binding and signal transduction, underpin an improved fundamental understanding of anion sensing at redox-active interfaces which will benefit not just the development of more potent, real-life relevant sensors, but also new tools to study host-guest interactions at interfaces.

scholarly journals A halogen-bonding foldamer molecular film for selective reagentless anion sensing in water

2019 ◽  
Vol 55 (33) ◽  
pp. 4849-4852 ◽  
Author(s):  
Robert Hein ◽  
Arseni Borissov ◽  
Martin D. Smith ◽  
Paul D. Beer ◽  
Jason J. Davis
Keyword(s):  
Pure Water ◽  
Halogen Bonding ◽  
Anion Sensing ◽  
Molecular Film ◽  
Capacitance Spectroscopy

A novel halogen-bonding foldamer molecular film was utilised to achieve anion sensing in pure water via non-faradaic capacitance spectroscopy.

The X40x10 Halogen Bonding Benchmark Revisited: Surprising Importance of (n-1)d Subvalence Correlation

2017 ◽  
Author(s):  
Manoj Kumar Kesharwani ◽  
Nitai Sylvetsky ◽  
Debashree Manna ◽  
Jan M.L. Martin
Keyword(s):  
Dissociation Energy ◽  
Noncovalent Interactions ◽  
Halogen Bonding ◽  
Coupled Cluster ◽  
Dissociation Energies ◽  
Iodine Species ◽  
Explicitly Correlated ◽  
High Level ◽  
Cluster Methods ◽  
Small Separation

<p>We have re-evaluated the X40x10 benchmark for halogen bonding using conventional and explicitly correlated coupled cluster methods. For the aromatic dimers at small separation, improved CCSD(T)–MP2 “high-level corrections” (HLCs) cause substantial reductions in the dissociation energy. For the bromine and iodine species, (n-1)d subvalence correlation increases dissociation energies, and turns out to be more important for noncovalent interactions than is generally realized. As in previous studies, we find that the most efficient way to obtain HLCs is to combine (T) from conventional CCSD(T) calculations with explicitly correlated CCSD-F12–MP2-F12 differences.</p>

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