Sensing Application — Metal-organic framework transistors for dopamine sensing

Measurement evidence

Sensing Application

Metal-organic framework transistors for dopamine sensing · Song J., Zheng J., Yang A. et al. · Materials Chemistry Frontiers · 2021 · 3422-3427

4 measurement groups · 9 results

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

two-terminal chemiresistor real-time response to dopamine

Cu3(HHTP)2 two-terminal chemiresistor without gate · Thin Film

Cu3(HHTP)2-based chemiresistor without gate; VDS = 0.02 V in SI figure.

Atmosphere
aqueous electrolyte
Geometry
two-terminal MOF chemiresistor without gate electrode
Context
pristine Cu3(HHTP)2 film control device
Measurement source
p006 · Supporting Information · Fig. S6
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
chemiresistor minimum detected DA concentrationonly can detect DA with a concentration of 5 uMText
Approximate
p004 / 3425 · Results and discussion · Fig. S6

real-time SGMT current response to dopamine additions

Cu3(HHTP)2-based solution-gated MOF transistor · Thin Film

IDS-time curve; VDS = 20 mV, VGS = 40 mV; DA additions from 100 nM to 50 uM.

Atmosphere
0.1 M CaCl2 aqueous electrolyte
Geometry
solution-gated Cu3(HHTP)2 transistor
Context
pristine Cu3(HHTP)2 channel used as dopamine sensor
Measurement source
p003 / 3424 · Results and discussion · Fig. 4c-d
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
dopamine current response at 50 uMca. 880 nA at 50 uM DAVisual Estimate
Uncertain
p003 / 3424 · Results and discussion · Fig. 4d
first dopamine linear-response upper concentrationlinearly increased with DA concentration up to 5 uMText
Exact Reported
p003-p004 / 3424-3425 · Results and discussion · Fig. 4d
second dopamine linear-response upper concentrationsecond linear region up to 50 uMText
Exact Reported
p004 / 3425 · Results and discussion · Fig. 4d
dopamine detection limitMarked as a best value within this paper100 nM0.1 uMText
Exact Reported
p003 / 3424 · Results and discussion · Fig. 4c-d

SGMT transfer curves before and after dopamine addition

Cu3(HHTP)2-based solution-gated MOF transistor · Thin Film

0.1 M CaCl2 electrolyte; VDS = 20 mV; before and after DA addition to 50 uM.

Atmosphere
aqueous electrolyte
Geometry
solution-gated Cu3(HHTP)2 transistor
Context
pristine Cu3(HHTP)2 channel used as dopamine sensor
Measurement source
p003 / 3424 · Results and discussion · Fig. 4a
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
transfer-curve response to dopaminesignificant negative gate-voltage shift after 50 uM DACaption
Qualitative
p003 / 3424 · Results and discussion · Fig. 4a

real-time SGMT selectivity tests

Cu3(HHTP)2-based solution-gated MOF transistor · Thin Film

IDS-time response at VDS = 20 mV, VGS = 40 mV to AA, UA and glucose additions.

Atmosphere
aqueous electrolyte
Geometry
solution-gated Cu3(HHTP)2 transistor
Context
pristine Cu3(HHTP)2 channel tested against interfering analytes
Measurement source
p007 · Supporting Information · Fig. S7
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
ascorbic acid detection limit relative to DAaround 2 orders of magnitude worse than DAText
Approximate
p004 / 3425 · Results and discussion · Fig. 4d, Fig. S7a
glucose responseno response to glucoseText
Qualitative
p004 / 3425 · Results and discussion · Fig. S7c
uric acid response thresholdslim response to UA at high concentration of 10 uMText
Approximate
p004 / 3425 · Results and discussion · Fig. S7b