Sensing Application — Electrically Conductive Metal–Organic Framework Thin Film-Based On-Chip Micro-Biosensor: A Platform to Unravel Surface Morphology-Dependent Biosensing

4 measurement groups · 15 results

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

Amperometric H2O2 sensing

BS-Cu-BHT film on on-chip electrode · Electrode

Successive additions of H2O2 into 0.1 M PBS at -0.2 V; calibration of current density versus H2O2 concentration; selectivity against interferents.

Geometry: on-chip micro-biosensor with BS-Cu-BHT working electrode
Context: pristine Cu-BHT film device; synaptic-like bottom-side exposed
Measurement source: p005-p006 · Results and Discussion · Figure 4g-i / Figure S18

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
BS-Cu-BHT current-density calibration slopeMarked as a best value within this paper	y = -0.257x - 53.77; R = 0.99	-257 uA cm-2 mM-1	R = 0.99	Figure Axis Rounded Reported	p005 · Results and Discussion · Figure 4h
BS-Cu-BHT H2O2 detection limitMarked as a best value within this paper	0.08 uM (S/N = 3)	0.00008 mM	S/N = 3	Text Exact Reported	p006 · Results and Discussion · Figure 4h / Table S1
BS-Cu-BHT linear range upper bound from Table S1	0.4 mM	400 uM	—	SI Table Exact Reported	p014 · Supporting Information · Table S1
BS-Cu-BHT linear range lower bound from Table S1	0.0005 mM	0.5 uM	—	SI Table Exact Reported	p014 · Supporting Information · Table S1
BS-Cu-BHT amperometric linear range from main text	linear range was up to 200 uM	0.2 mM	—	Text Rounded Reported	p006 · Results and Discussion · Figure 4h
BS-Cu-BHT H2O2 response timeMarked as a best value within this paper	steady state within 4 s	—	—	Text Rounded Reported	p006 · Results and Discussion · Figure 4g / Table S1
BS-Cu-BHT H2O2 sensitivityMarked as a best value within this paper	approx 257 uA mM-1 cm-2	—	—	Text Approximate	p006 · Results and Discussion · Figure 4h / Table S1
Device-to-device repeatability RSD for 100 uM H2O2	RSD = 4.7% for six devices	—	six devices	Text Exact Reported	p006 · Results and Discussion · Figure S18b
Selectivity against common interferents	100 uM NaS2, uric acid, dopamine, glucose, ascorbic acid, and L-cysteine caused no distinctive amperometric current density changes	—	—	Text Qualitative	p006 · Results and Discussion · Figure 4i
Same-device repeatability RSD for 100 uM H2O2	RSD = 2.2% for six successive additions	—	six successive additions	Text Exact Reported	p006 · Results and Discussion · Figure S18a

Cyclic voltammetry H2O2 sensing

Voltammetry

BS-Cu-BHT film on on-chip electrode · Electrode

BS-Cu-BHT in 0.1 M PBS containing 0, 0.2, 0.4, 0.6, 0.8, and 1 mM H2O2 at 50 mV s-1.

Geometry: Cu-BHT film covers circular gold working electrode; outer gold and saturated calomel electrodes used as counter/reference
Context: pristine Cu-BHT film device; synaptic-like bottom-side exposed
Measurement source: p005 · Results and Discussion · Figure 4e

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
BS-Cu-BHT current versus H2O2 concentration slopeMarked as a best value within this paper	y = -73.71x - 15.91, R = 0.995	—	R = 0.995	Figure Axis Rounded Reported	p005 · Results and Discussion · Figure 4f
Cu-BHT oxidation peak potential range in PBS	-0.18 to -0.14 V vs Hg/HgO	—	—	Text Range	p005 · Results and Discussion · Figure S13
Cu-BHT reduction peak potential range in PBS	-0.65 to -0.70 V vs Hg/HgO	—	—	Text Range	p005 · Results and Discussion · Figure S13

Cyclic voltammetry H2O2 sensing

Voltammetry

US-Cu-BHT film on on-chip electrode · Electrode

US-Cu-BHT in 0.1 M PBS containing 0, 0.2, 0.4, 0.6, 0.8, and 1 mM H2O2 at 50 mV s-1.

Geometry: Cu-BHT film covers circular gold working electrode; outer gold and saturated calomel electrodes used as counter/reference
Context: pristine Cu-BHT film device; smooth up-side exposed
Measurement source: p005 · Results and Discussion · Figure 4d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
US-Cu-BHT current versus H2O2 concentration slope	y = -35.16x - 10.01, R = 0.994	—	R = 0.994	Figure Axis Rounded Reported	p005 · Results and Discussion · Figure 4f

Post-sensing TEM/SEM/XPS and two-week sensor response retention

X-ray photoelectron spectroscopy Scanning electron microscopy Transmission electron microscopy

BS-Cu-BHT film on on-chip electrode · Electrode

BS-Cu-BHT after H2O2 detection examined by TEM, SEM, and XPS; sensor relative response measured for two weeks.

Geometry: on-chip micro-biosensor
Context: pristine BS-Cu-BHT film device
Measurement source: p006 · Results and Discussion · Figures S15-S17

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Sensor current-response retention after two weeks	91.34% of original value after 2 weeks	0.9134 fraction of original response	—	Text Exact Reported	p006 · Results and Discussion · Figure S17