Research output: Contribution to Journal/Magazine › Literature review › peer-review
Research output: Contribution to Journal/Magazine › Literature review › peer-review
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TY - JOUR
T1 - Surface-attached sensors for cation and anion recognition
AU - Evans, Nicholas H.
AU - Rahman, Habibur
AU - Davis, Jason J.
AU - Beer, Paul D.
PY - 2012/2
Y1 - 2012/2
N2 - The development of surface-attached sensors for cationic and anionic guests is of intense current research interest. In addition to the environmental flexibility, robustness and reusability of such devices, surface-confined sensors typically exhibit an amplified response to target analytes owing to preorganization of the receptor. Whereas redox-active cations may be sensed by studying the cyclic voltammetry of host-guest systems containing ion-selective receptors attached to an appropriate electrode, redox-inactive ionic species require the use of electrochemical impedance spectroscopy, with appropriately functionalized electrodes and redox probes. Alternatively, receptors may be constructed that incorporate an electrochemical or optical reporter group within their structure to provide a macroscopic response to the presence of an ionic guest. This critical review seeks to present an up-to-date, although necessarily selective, account of the progress in the field, and provides insights into possible future developments, including the utilization of receptor-nanoparticle conjugates and mechanically interlocked receptors.
AB - The development of surface-attached sensors for cationic and anionic guests is of intense current research interest. In addition to the environmental flexibility, robustness and reusability of such devices, surface-confined sensors typically exhibit an amplified response to target analytes owing to preorganization of the receptor. Whereas redox-active cations may be sensed by studying the cyclic voltammetry of host-guest systems containing ion-selective receptors attached to an appropriate electrode, redox-inactive ionic species require the use of electrochemical impedance spectroscopy, with appropriately functionalized electrodes and redox probes. Alternatively, receptors may be constructed that incorporate an electrochemical or optical reporter group within their structure to provide a macroscopic response to the presence of an ionic guest. This critical review seeks to present an up-to-date, although necessarily selective, account of the progress in the field, and provides insights into possible future developments, including the utilization of receptor-nanoparticle conjugates and mechanically interlocked receptors.
KW - Anions
KW - Cations
KW - Electrochemistry
KW - Fluorescence
KW - Ion recognition
KW - Self-assembled monolayers
KW - SELF-ASSEMBLED MONOLAYERS
KW - THIOCTIC ESTER DERIVATIVES
KW - GOLD NANOPARTICLES
KW - ELECTROCHEMICAL DETERMINATION
KW - SUPRAMOLECULAR CHEMISTRY
KW - IMPEDANCE SPECTROSCOPY
KW - AQUEOUS-SOLUTION
KW - ION RECOGNITION
KW - ELECTRODES
KW - TETRATHIAFULVALENE
U2 - 10.1007/s00216-011-5403-7
DO - 10.1007/s00216-011-5403-7
M3 - Literature review
VL - 402
SP - 1739
EP - 1748
JO - Analytical and Bioanalytical Chemistry
JF - Analytical and Bioanalytical Chemistry
SN - 1618-2642
IS - 5
ER -