Electrochemistry Application — Conductive Metal-Organic Frameworks as Ion-to-Electron Transducers in Potentiometric Sensors

8 measurement groups · 30 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

constant-current chronopotentiometry

Galvanostatic cycling

GCE/K+-ISM-II control without MOF · Electrode

+1 nA for 60 s followed by -1 nA for 60 s in 0.1 M KCl at room temperature.

Atmosphere: aqueous 0.1 M KCl
Geometry: GCE/K+-ISM-II control
Context: control without MOF transducer
Measurement source: 6 · Potential Stability · Figure 4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
GCE/K+-ISM-II capacitance from E/t	0.4 +/- 0.1 uF	—	+/- 0.1 uF	Calculated From Reported Exact Reported	6 · Potential Stability · Figure 4
GCE/ISM potential drift under -1 nA	2615 +/- 14 uV/s	—	+/- 14 uV/s	Text Exact Reported	6 · Potential Stability · Figure 4

constant-current chronopotentiometry

Galvanostatic cycling

GCE/Ni3HHTP2 MOF/K+-ISM-II potentiometric device · Electrode

+1 nA for 60 s followed by -1 nA for 60 s in 0.1 M KCl at room temperature.

Atmosphere: aqueous 0.1 M KCl
Geometry: GCE/Ni3HHTP2 MOF/K+-ISM-II
Context: MOF-containing composite sensor
Measurement source: 6 · Potential Stability · Figure 4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
GCE/MOF/K+-ISM-II capacitance from E/tMarked as a best value within this paper	60.6 +/- 1.4 uF	—	+/- 1.4 uF	Calculated From Reported Exact Reported	6 · Potential Stability · Figure 4
GCE/MOF/K+-ISM-II potential drift under -1 nAMarked as a best value within this paper	15 +/- 1 uV/s	—	+/- 1 uV/s	Text Exact Reported	6 · Potential Stability · Figure 4

cyclic voltammetry

Voltammetry

M3HHTP2 bulk powder series · Powder

GCE coated with 60 um MOF; scan rate 50 mV/s; 0.1 M KCl; -0.5 to 0.5 V; nitrogen atmosphere.

Atmosphere: nitrogen
Geometry: MOF-coated GCE working electrode, Ag/AgCl reference, platinum auxiliary
Context: MOF film on GCE
Measurement source: 11 · Cyclic Voltammetry · Figure S8

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co3HHTP2 CV faradaic reactions	no faradic reactions observed	—	—	Text Qualitative	11 · Cyclic Voltammetry · Figure S8
Cu3HHTP2 CV anodic peak	0.13 V	—	—	Text Exact Reported	11 · Cyclic Voltammetry · Figure S8
Cu3HHTP2 CV anodic peak	-0.14 V	—	—	Text Exact Reported	11 · Cyclic Voltammetry · Figure S8
Cu3HHTP2 CV cathodic peak	-0.01 V	—	—	Text Exact Reported	11 · Cyclic Voltammetry · Figure S8
Cu3HHTP2 CV cathodic peak	-0.34 V	—	—	Text Exact Reported	11 · Cyclic Voltammetry · Figure S8
Ni3HHTP2 CV anodic peak	0.14 V	—	—	Text Exact Reported	11 · Cyclic Voltammetry · Figure S8
Ni3HHTP2 CV cathodic peak	-0.02 V	—	—	Text Exact Reported	11 · Cyclic Voltammetry · Figure S8
Ni3HHTP2 CV cathodic peak	-0.13 V	—	—	Text Exact Reported	11 · Cyclic Voltammetry · Figure S8

electrochemical impedance spectroscopy

Impedance spectroscopy

GCE/K+-ISM-II control without MOF · Electrode

GCE/K+-ISM-II control in 0.1 M KCl; 100 kHz to 10 mHz; 0.1 V amplitude.

Atmosphere: aqueous 0.1 M KCl
Geometry: two-layer GCE/K+-ISM-II
Context: control without MOF transducer
Measurement source: 5 · Quantifying the Efficiency · Figure 3A

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
GCE/K+-ISM-II bulk membrane resistance	1.0 +/- 0.2 Mohm	1000000 ohm	+/- 0.2 Mohm	Text Exact Reported	5 · Quantifying the Efficiency · Figure 3A

electrochemical impedance spectroscopy

Impedance spectroscopy

M3HHTP2 bulk powder series · Powder

GCE/MOF electrodes in 0.1 M KCl at room temperature; 100 kHz to 10 mHz; 0.01 V amplitude; triplicate; fitted with equivalent circuits.

Atmosphere: aqueous 0.1 M KCl
Geometry: drop-cast M3HHTP2 MOF on GCE
Context: pristine MOF transducer films on GCE
Measurement source: 3 · Electrochemical Impedance Spectroscopy · Figure 2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co3HHTP2 bulk capacitance at 60 um	157 +/- 2 uF	—	+/- 2 uF	Text Exact Reported	4 · Measuring the Charge-Transfer Resistance · Figure 2A
Co3HHTP2 CPE phase value at 60 um	0.75	—	—	Text Exact Reported	4 · Measuring the Charge-Transfer Resistance · Figure 2A
Cu3HHTP2 bulk capacitance at 60 um	177 +/- 3 uF	—	+/- 3 uF	Text Exact Reported	4 · Measuring the Charge-Transfer Resistance · Figure 2A
Cu3HHTP2 CPE phase value at 60 um	0.84	—	—	Text Exact Reported	4 · Measuring the Charge-Transfer Resistance · Figure 2A
Ni3HHTP2 bulk capacitance at 60 umMarked as a best value within this paper	204 +/- 2 uF	—	+/- 2 uF	Text Exact Reported	4 · Measuring the Charge-Transfer Resistance · Figure 2A
Ni3HHTP2 CPE phase value at 60 umMarked as a best value within this paper	0.93	—	—	Text Exact Reported	4 · Measuring the Charge-Transfer Resistance · Figure 2A
Warburg impedance observation	no characteristic 45-degree Warburg line observed	—	—	Text Qualitative	5 · Measuring the Charge-Transfer Resistance · Figure 2
solution resistance R1 in 0.1 M KCl	R1 = 140 ohm	—	—	Text Rounded Reported	4 · Measuring the Charge-Transfer Resistance · Figure 2A

electrochemical impedance spectroscopy under applied potentials

Impedance spectroscopy

GCE/Ni3HHTP2 MOF thickness series · Electrode

Drop-cast Ni3HHTP2 layer from 2 uL aliquot, 20 um thickness; potentials 0.0, 0.3, and -0.3 V; 100 kHz to 10 mHz; 0.01 V amplitude; 0.1 M KCl.

Atmosphere: aqueous 0.1 M KCl
Geometry: GCE/Ni3HHTP2 MOF
Context: MOF transducer film on GCE
Measurement source: 13 · Electrochemical Impedance Spectroscopy · Figure S9

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Applied-potential dependence of Ni3HHTP2 EIS	no significant difference at 0.0, 0.3, and -0.3 V	—	—	Caption Qualitative	13 · Electrochemical Impedance Spectroscopy · Figure S9

electrochemical impedance spectroscopy

Impedance spectroscopy

GCE/Ni3HHTP2 MOF/K+-ISM-II potentiometric device · Electrode

GCE/MOF/K+-ISM-II in 0.1 M KCl; 100 kHz to 10 mHz; 0.1 V amplitude.

Atmosphere: aqueous 0.1 M KCl
Geometry: three-layer GCE/Ni3HHTP2/K+-ISM-II
Context: MOF-containing composite sensor
Measurement source: 5 · Quantifying the Efficiency · Figure 3B

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Charge-transfer resistance at ISM/MOF interfaceMarked as a best value within this paper	absence of second low-frequency semicircle; characteristic of low charge-transfer resistance	—	—	Text Qualitative	5 · Quantifying the Efficiency · Figure 3B
GCE/MOF/K+-ISM-II bulk ISM resistance	1.0 +/- 0.3 Mohm	1000000 ohm	+/- 0.3 Mohm	Text Exact Reported	5 · Quantifying the Efficiency · Figure 3B

electrochemical impedance spectroscopy

Impedance spectroscopy

GCE/Ni3HHTP2 MOF thickness series · Electrode

GCE/Ni3HHTP2 films of 20, 40, and 60 um in 0.1 M KCl; 100 kHz to 10 mHz; 0.01 V amplitude.

Atmosphere: aqueous 0.1 M KCl
Geometry: drop-cast Ni3HHTP2 thickness series on GCE
Context: MOF transducer film on GCE
Measurement source: 4 · Measuring the Charge-Transfer Resistance · Figure 2B

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni3HHTP2 capacitance at 20 um	153 +/- 1 uF for 20 +/- 8 um	—	+/- 1 uF	Text Exact Reported	4 · Measuring the Charge-Transfer Resistance · Figure 2B
Ni3HHTP2 capacitance at 40 um	155 +/- 1 uF for 40 +/- 5 um	—	+/- 1 uF	Text Exact Reported	4 · Measuring the Charge-Transfer Resistance · Figure 2B
Ni3HHTP2 capacitance at 60 umMarked as a best value within this paper	204 +/- 2 uF for 60 +/- 5 um	—	+/- 2 uF	Text Exact Reported	4 · Measuring the Charge-Transfer Resistance · Figure 2B
Ni3HHTP2 high-frequency Ohmic impedance at 20 um	186 ohm	—	—	Text Rounded Reported	4 · Measuring the Charge-Transfer Resistance · Figure 2B inset
Ni3HHTP2 high-frequency Ohmic impedance at 40 um	95 ohm	—	—	Text Rounded Reported	4 · Measuring the Charge-Transfer Resistance · Figure 2B inset
Ni3HHTP2 high-frequency Ohmic impedance at 60 umMarked as a best value within this paper	35 ohm	—	—	Text Rounded Reported	4 · Measuring the Charge-Transfer Resistance · Figure 2B inset