cMOF Evidence Base
Sensing Application — Cu3(hexaiminotriphenylene)2: An electrically conductive 2D metal-organic framework for chemiresistive sensing

Measurement evidence

Sensing Application

Cu3(hexaiminotriphenylene)2: An electrically conductive 2D metal-organic framework for chemiresistive sensing · Campbell M.G., Sheberla D., Liu S.F. et al. · Angewandte Chemie - International Edition · 2015 · 4349-4352

3 measurement groups · 19 results

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

Chemiresistive ammonia sensing under air/humidity carrier gases

Cu3(HITP)2 chemiresistive device on interdigitated gold electrodes · Electrode

Comparison of 5 ppm ammonia response under N2 (3% RH), air (9% RH), N2+H2O (~60% RH), and air+H2O (~60% RH).

Temperature
room temperature
Atmosphere
Nitrogen or air carrier gas with specified relative humidity.
Geometry
Drop-cast Cu3(HITP)2 on interdigitated gold electrodes.
Context
pristine
Measurement source
SI p.S16 · Figure S11 · Fig. S11
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Ammonia detection under humid air<=5 ppm NH3 under air with 60% relative humidity—<=Text
Exact Reported		main p.3, article p.4351 · Sensing discussion · Fig. S11
Approximate 5 ppm NH3 response under humid airabout 0.71% DeltaG/G0 under Air+H2O (~60% RH)0.0071 DeltaG/G0visual estimate; error bar about +/-0.10%Figure Axis
Approximate		SI p.S16 · Figure S11 · Fig. S11
Approximate 5 ppm NH3 response under air, 9% RHabout 0.88% DeltaG/G0 under air (9% RH)0.0088 DeltaG/G0visual estimate; error bar about +/-0.22%Figure Axis
Approximate		SI p.S16 · Figure S11 · Fig. S11
Approximate 5 ppm NH3 response under humid N2about 0.71% DeltaG/G0 under N2+H2O (~60% RH)0.0071 DeltaG/G0visual estimate; error bar about +/-0.14%Figure Axis
Approximate		SI p.S16 · Figure S11 · Fig. S11
Approximate 5 ppm NH3 response under N2, 3% RHabout 0.82% DeltaG/G0 under N2 (3% RH)0.0082 DeltaG/G0visual estimate; error bar about +/-0.27%Figure Axis
Approximate		SI p.S16 · Figure S11 · Fig. S11

Chemiresistive ammonia sensing under nitrogen carrier gas

Cu3(HITP)2 chemiresistive device on interdigitated gold electrodes · Electrode

Device in PTFE gas-flow chamber; 0.100 V applied; current recorded during 30 s ammonia exposures separated by at least 300 s; 1% NH3/N2 diluted by N2.

Temperature
room temperature
Atmosphere
Nitrogen carrier gas; NH3/N2 analyte stream.
Geometry
Drop-cast Cu3(HITP)2 on interdigitated gold electrodes connected to potentiostat.
Context
pristine
Measurement source
SI p.S3 · Procedure for Gas Detection Measurements · Figs. 4,S8-S10
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Lowest experimentally accessible ammonia concentration detectedMarked as a best value within this paper<=0.5 ppm detected; 0.5 ppm was the lowest experimentally accessible concentration—<=Text
Exact Reported		main p.3, article p.4351 · Sensing discussion · Fig. 4b
Applied sensing bias0.100 V——Text
Exact Reported		SI p.S3 · Procedure for Gas Detection Measurements
Target starting device resistance10-100 kOhm—rangeText
Range		SI p.S3 · Procedure for Gas Detection Measurements
Ammonia exposure time per sensing pulse30 s——Text
Exact Reported		SI p.S3 · Procedure for Gas Detection Measurements
Minimum time between sensing measurementsat least 300 s—at leastText
Exact Reported		SI p.S3 · Procedure for Gas Detection Measurements
Approximate response at 0.5 ppm NH3about 0.08% DeltaG/G0 at 0.5 ppm NH3 from Fig. 4c0.0008 DeltaG/G0visual estimateFigure Axis
Approximate		main p.3, article p.4351 · Figure 4 · Fig. 4c
Approximate response at 10 ppm NH3about 2.6% DeltaG/G0 at 10 ppm NH3 from Fig. 4c0.026 DeltaG/G0visual estimate; error bar roughly +/-0.6%Figure Axis
Approximate		main p.3, article p.4351 · Figure 4 · Fig. 4c
Approximate response at 2 ppm NH3about 0.35% DeltaG/G0 at 2 ppm NH3 from Fig. 4c0.0035 DeltaG/G0visual estimateFigure Axis
Approximate		main p.3, article p.4351 · Figure 4 · Fig. 4c
Approximate response at 5 ppm NH3about 1.1% DeltaG/G0 at 5 ppm NH3 from Fig. 4c0.011 DeltaG/G0visual estimate; error bar roughly +/-0.2%Figure Axis
Approximate		main p.3, article p.4351 · Figure 4 · Fig. 4c
Linear response R2 in main Figure 4cR2 = 0.99——Caption
Exact Reported		main p.3, article p.4351 · Figure 4 caption · Fig. 4c
Linear response R2 for one SI deviceR2 = 0.98154——Figure Axis
Exact Reported		SI p.S15 · Figure S10 · Fig. S10
Linear response R2 for second SI deviceR2 = 0.99027——Figure Axis
Exact Reported		SI p.S15 · Figure S10 · Fig. S10
Reversible response cycle count>10 cycles—>Text
Exact Reported		main p.3, article p.4351 · Sensing discussion · Fig. 4b

Chemiresistive ammonia sensing control under identical conditions

Ni3(HITP)2 chemiresistive sensing control device · Electrode

Ni3(HITP)2 devices exposed to ammonia vapour under the same experimental conditions as Cu3(HITP)2 devices.

Temperature
room temperature
Atmosphere
Ammonia vapour exposure; detailed carrier gas not separately specified for Ni control.
Geometry
Ni3(HITP)2 device; detailed geometry not reported beyond being fabricated as a device.
Context
pristine control
Measurement source
main p.3, article p.4351 · Sensing discussion
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Ni3(HITP)2 ammonia sensing responseNo observable response to ammonia vapour exposure under identical conditions.——Text
Qualitative		main p.3, article p.4351 · Sensing discussion