scholarly journals Enhanced voltammetric anion sensing at halogen and hydrogen bonding ferrocenyl SAMs

2021 ◽  
Author(s):  
Robert Hein ◽  
Xiaoxiong Li ◽  
Paul D. Beer ◽  
Jason J. Davis
Keyword(s):  
Hydrogen Bonding ◽  
Molecular Films ◽  
Surface Enhancement ◽  
Anion Sensing ◽  
Redox Active

Surface enhancement effects in the sensing of anions at redox-active molecular films are investigated in detail and rationalised based on a consideration of the dielectric binding microenvironment.

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 Selective Anion Sensing by Chiral Macrocyclic Receptors with Multiple Hydrogen-Bonding Sites

2014 ◽  
Vol 16 (5) ◽  
pp. 1302-1305 ◽  
Author(s):  
Tadashi Ema ◽  
Keiichi Okuda ◽  
Sagiri Watanabe ◽  
Takayuki Yamasaki ◽  
Tsuyoshi Minami ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Anion Sensing ◽  
Macrocyclic Receptors ◽  
Multiple Hydrogen Bonding

Fluoride anion sensing mechanism of a BODIPY-linked hydrogen-bonding probe

2018 ◽  
Vol 39 (21) ◽  
pp. 1639-1647 ◽  
Author(s):  
Yang Li ◽  
Junsheng Chen ◽  
Tian-Shu Chu
Keyword(s):  
Hydrogen Bonding ◽  
Fluoride Anion ◽  
Anion Sensing ◽  
Sensing Mechanism
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