Sensing Application — Highly Selective and Sensitive Detection of Volatile Sulfur Compounds by Ionically Conductive Metal-Organic Frameworks

8 measurement groups · 26 results

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

Capacitive response time to ethanethiol (C2H5SH)

Cu-TCPP IC-MOF thin-film sensor on ITO interdigital electrodes · Electrode

Cu-TCPP sensor exposed to 0.1 uL C2H5SH; response time t90 extracted

Temperature: room temperature
Atmosphere: C2H5SH exposure
Geometry: Cu-TCPP IC-MOF on ITO interdigital electrodes
Context: pristine Cu-TCPP IC-MOF target sensor
Measurement source: main p.5 · Results and Discussion · Figure 4d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cu-TCPP response time to 0.1 uL C2H5SHMarked as a best value within this paper	as low as 3 s	—	—	Text Exact Reported	main p.5 · Results and Discussion · Figure 4d

Capacitive response to CH3SH

Cu-TCPP IC-MOF thin-film sensor on ITO interdigital electrodes · Electrode

Room-temperature repeated CH3SH exposure in nitrogen balance gas; irreversible response used as signal

Temperature: room temperature
Atmosphere: CH3SH/N2 with air recovery
Geometry: Cu-TCPP IC-MOF on ITO interdigital electrodes
Context: pristine Cu-TCPP IC-MOF target sensor
Measurement source: main p.4-5 · Results and Discussion · Figures 3b, 4b; Table S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cu-TCPP response to 1 ppm CH3SH	2.5%	—	—	SI Table Exact Reported	SI p.17 · Table S1 · Table S1
Cu-TCPP response to 50 ppm CH3SHMarked as a best value within this paper	63.1%	—	—	Text Exact Reported	main p.4 · Results and Discussion · Figure 3b; Table S1
Cu-TCPP experimental CH3SH detected concentration floorMarked as a best value within this paper	1 ppm	—	—	Text Exact Reported	main p.3 · Results and Discussion · Figure S7
Cu-TCPP theoretical CH3SH LODMarked as a best value within this paper	121 ppb	—	—	Text Exact Reported	main p.4 · Results and Discussion · Figure 4b
CH3SH log-scale calibration R2	R2 = 0.985	—	—	Figure Axis Exact Reported	main p.5 · Results and Discussion · Figure 4b
CH3SH log-scale calibration slope	y = 0.811x + 0.433	—	—	Figure Axis Exact Reported	main p.5 · Results and Discussion · Figure 4b

Capacitive response to H2S

Cu-TCPP IC-MOF thin-film sensor on ITO interdigital electrodes · Electrode

Room-temperature repeated H2S exposure in nitrogen balance gas; irreversible response used as signal

Temperature: room temperature
Atmosphere: H2S/N2 with air recovery
Geometry: Cu-TCPP IC-MOF on ITO interdigital electrodes
Context: pristine Cu-TCPP IC-MOF target sensor
Measurement source: main p.4-6 · Results and Discussion · Figures 3a, 4a; Table 1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cu-TCPP response to 1 ppb H2S	2.2% at 0.001 ppm	—	—	Table Exact Reported	main p.6 · Results and Discussion · Table 1
Cu-TCPP response to 5 ppm H2SMarked as a best value within this paper	82.9%	—	—	Text Exact Reported	main p.4 · Results and Discussion · Figure 3a; Table 1
Cu-TCPP experimental H2S detected concentration floorMarked as a best value within this paper	1 ppb	—	—	Text Exact Reported	main p.3 · Results and Discussion · Figure S6
Cu-TCPP theoretical H2S LODMarked as a best value within this paper	27 ppt	—	—	Text Exact Reported	main p.4 · Results and Discussion · Table 1
H2S log-scale calibration R2	R2 = 0.978	—	—	Figure Axis Exact Reported	main p.5 · Results and Discussion · Figure 4a
H2S log-scale calibration slope	y = 0.434x + 0.263	—	—	Figure Axis Exact Reported	main p.5 · Results and Discussion · Figure 4a

Capacitive selectivity tests against common gases and mixtures

Cu-TCPP IC-MOF thin-film sensor on ITO interdigital electrodes · Electrode

Cu-TCPP exposed to H2S, CH3SH, CO2, O2, HCl, NH3, H2, CO, acetone, ethanol, and mixtures of H2S with H2/HCl/CO2/acetone

Temperature: room temperature
Atmosphere: analyte/N2 with air recovery
Geometry: Cu-TCPP IC-MOF on ITO interdigital electrodes
Context: pristine Cu-TCPP IC-MOF target sensor
Measurement source: main p.5 · Results and Discussion · Figure 4c; Figures S8-S10

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cu-TCPP H2S selectivity ratio Ri/RhMarked as a best value within this paper	0	—	—	Table Exact Reported	main p.6 · Table 1 · Table 1
Cu-TCPP irreversible response to non-VSC interference gasesMarked as a best value within this paper	no irreversible response to CO2, O2, HCl, NH3, H2, CO, acetone, and ethanol	—	—	Text Qualitative	main p.5 · Results and Discussion · Figure 4c; Figure S8

Capacitive VSC response screening across Cu-X sensors

Cu-THPP IC-MOF thin-film sensor · Electrode

Cu-TCPP, Cu-THPP, and Cu-BTEC IC-MOF sensors exposed to 5 ppm H2S and 50 ppm CH3SH

Temperature: room temperature
Atmosphere: VSC/N2 with air recovery
Geometry: IC-MOF films on ITO interdigital electrodes
Context: pristine Cu-X ligand controls
Measurement source: main p.4 · Results and Discussion · Figure 3d; Figure S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cu-BTEC response to VSCs	no irreversible response to VSCs	—	—	Text Qualitative	main p.4 · Results and Discussion · Figure 3d; Figure S3
Cu-THPP response to 50 ppm CH3SH	about 25%	—	visual estimate from bar chart	Figure Axis Approximate	main p.4 · Results and Discussion · Figure 3d
Cu-THPP response to 5 ppm H2S	about 44%	—	visual estimate from bar chart	Figure Axis Approximate	main p.4 · Results and Discussion · Figure 3d

Capacitive VSC response screening across M-TCPP sensors

Co-TCPP IC-MOF thin-film sensor · Electrode

Co-, Ni-, Zn-, and Mg-TCPP IC-MOF sensors exposed to 5 ppm H2S and 50 ppm CH3SH at room temperature

Temperature: room temperature
Atmosphere: VSC/N2 with air recovery
Geometry: IC-MOF films on ITO interdigital electrodes
Context: pristine M-TCPP metal-node controls
Measurement source: main p.4 · Results and Discussion · Figure 3c; Figure S2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co/Ni/Zn/Mg-TCPP response to 50 ppm CH3SH	no irreversible response	—	—	Text Qualitative	main p.4 · Results and Discussion · Figure 3c; Figure S2
Co/Ni/Zn/Mg-TCPP response to 5 ppm H2S	no irreversible response	—	—	Text Qualitative	main p.4 · Results and Discussion · Figure 3c; Figure S2

Capacitance sensing with TH2827C Precision LCR Meter

Cu-TCPP IC-MOF thin-film sensor on ITO interdigital electrodes · Electrode

Room-temperature capacitive gas sensing in ca. 0.1 L home-made Teflon chamber; device stabilised in air, VSC/N2 introduced, air ventilated between cycles

Temperature: room temperature
Atmosphere: air baseline; nitrogen balance gas carrying analyte
Geometry: IC-MOF on ITO interdigital electrodes; L = 100 um, W = 1000 um
Context: pristine Cu-TCPP IC-MOF sensor
Measurement source: SI p.3 · Gas Sensing Experiments · Figure S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Teflon sensing chamber volume	around 0.1 L	—	—	Text Approximate	main p.4 · Results and Discussion · Figure S1
Conductive channel length	L = 100 um	—	—	Text Exact Reported	main p.3 · Results and Discussion
Conductive channel width	W = 1000 um	—	—	Text Exact Reported	main p.3 · Results and Discussion

C2H5SH response versus Cu-TCPP thickness

Cu-TCPP IC-MOF 100 nm thickness variant · Electrode

0.5 uL C2H5SH response for 100, 200, and 300 nm IC-MOF layers

Temperature: room temperature
Atmosphere: C2H5SH exposure
Geometry: Cu-TCPP IC-MOF thickness-control devices
Context: pristine Cu-TCPP IC-MOF thickness controls
Measurement source: SI p.15 · Supporting Figure Captions · Figure S12

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
100 nm Cu-TCPP response to 0.5 uL C2H5SH	about 68%	—	visual estimate from Figure S12d	Figure Axis Approximate	SI p.15 · Supporting Figure Captions · Figure S12d
200 nm Cu-TCPP response to 0.5 uL C2H5SHMarked as a best value within this paper	about 81%	—	visual estimate from Figure S12d	Figure Axis Approximate	SI p.15 · Supporting Figure Captions · Figure S12d
300 nm Cu-TCPP response to 0.5 uL C2H5SH	about 80%	—	visual estimate from Figure S12d	Figure Axis Approximate	SI p.15 · Supporting Figure Captions · Figure S12d