Electrical Transport — A Light-Responsive Metal–Organic Framework Hybrid Membrane with High On/Off Photoswitchable Proton Conductivity

Measurement evidence

Electrical Transport

A Light-Responsive Metal–Organic Framework Hybrid Membrane with High On/Off Photoswitchable Proton Conductivity · Liang H.-Q., Guo Y., Shi Y. et al. · Angewandte Chemie - International Edition · 2020 · 7732-7737

6 measurement groups · 25 results

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

Temperature-dependent EIS and Arrhenius analysis

SSP@ZIF-8-10% membrane · Thin Film

Arrhenius plots of ZIF-8 and SSP@ZIF-8 membranes with different SSP contents under 95% RH.

Atmosphere
95% RH, dark unless noted
Geometry
Ag-electrode membrane device
Context
Pristine ZIF-8 compared with guest-loaded membranes
Measurement source
3 · Results and discussion · Figure 3c; Figure S8
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
SSP@ZIF-8 activation-energy range0.4-1.1 eVText
Range
3 · Results and discussion · Figure 3c
ZIF-8 activation energy under 95% RH0.43 eVText
Exact Reported
3 · Results and discussion · Figure 3c

Electrochemical impedance spectroscopy

SSP@ZIF-8-10% membrane · Thin Film

Proton conductivity of SSP@ZIF-8-10% under 55-95% RH at 25 degC in the dark.

Temperature
298
Atmosphere
55-95% RH, dark
Geometry
Ag-electrode membrane device
Context
Target composite sample
Measurement source
3 · Results and discussion · Figure 3b
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
SSP@ZIF-8-10% conductivity at 55% RH and 25 degC5.5 x 10-7 S cm-1Text
Rounded Reported
3 · Results and discussion · Figure 3b
SSP@ZIF-8-10% conductivity at 95% RH and 25 degC1.0 x 10-4 S cm-1Text
Rounded Reported
3 · Results and discussion · Figure 3b

EIS under visible light and in dark

SSP@ZIF-8-10% membrane with Ag electrodes for impedance and LED switching · Electrode

Light/dark proton conductivity of SSP@ZIF-8-10% at 25-75 degC and 95% RH; visible-light source was a 150 W Xe lamp with 400 nm filter at 100 mW cm-2.

Temperature
298-348
Atmosphere
95% RH, visible light or dark
Geometry
Ag-electrode membrane device
Context
Target composite switching measurement
Measurement source
4 · Results and discussion · Figure 3d; Table 1
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
SSP@ZIF-8-10% on-mode conductivity at 25 degC from Table 11.7 x 10-4 S cm-1Table
Rounded Reported
4 · Table 1 · Table 1
SSP@ZIF-8-10% conductivity at 25 degC in dark(1.0 +/- 0.6) x 10-4 S cm-1+/- 0.6 x 10-4 S cm-1Text
Rounded Reported
4 · Results and discussion · Figure 3d
SSP@ZIF-8-10% conductivity at 25 degC under visible light(3.1 +/- 0.8) x 10-7 S cm-1+/- 0.8 x 10-7 S cm-1Text
Rounded Reported
4 · Results and discussion · Figure 3d
SSP@ZIF-8-10% on-mode conductivity at 75 degC from Table 10.043 S cm-1Table
Exact Reported
4 · Table 1 · Table 1
SSP@ZIF-8-10% conductivity at 75 degC in darkMarked as a best value within this paper0.05 +/- 0.01 S cm-1+/- 0.01 S cm-1Text
Rounded Reported
3-4 · Abstract; Results and discussion · Figure 3d
SSP@ZIF-8-10% conductivity at 75 degC under visible light(1.8 +/- 0.2) x 10-6 S cm-1+/- 0.2 x 10-6 S cm-1Text
Rounded Reported
4 · Results and discussion · Figure 3d
SSP@ZIF-8-10% on/off ratio at 25 degC from Table 1200Table
Exact Reported
4 · Table 1 · Table 1
SSP@ZIF-8-10% on/off ratio at 25 degCabout 300Text
Approximate
4 · Results and discussion · Figure 3d
SSP@ZIF-8-10% on/off ratio at 75 degCMarked as a best value within this paper2.8 x 10^4Text
Rounded Reported
4 · Results and discussion · Figure 3d; Table 1

Electrochemical impedance spectroscopy; conductivity calculated as sigma = L/RA

SSP@ZIF-8-10% membrane · Thin Film

Proton conductivity of ZIF-8 and SSP@ZIF-8 membranes with different SSP contents at 25 degC and 95% RH in the dark.

Temperature
298
Atmosphere
95% RH, dark
Geometry
Ag electrode gap length 3 mm and width 300 um on AAO-supported membrane; frequency 1 MHz-100 Hz; AC amplitude 0.5 V
Context
Pristine-control-first loading comparison
Measurement source
3 · Results and discussion · Figure 3a; Figure S8
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
SSP@ZIF-8-10% optimum proton conductivity at 25 degC and 95% RH(1.0 +/- 0.6) x 10-4 S cm-1+/- 0.6 x 10-4 S cm-1Text
Rounded Reported
3 · Results and discussion · Figure 3a
SSP@ZIF-8-1% proton conductivity at 25 degC and 95% RHapproximately 5 x 10-6 S cm-1 from Figure 3aFigure Axis
Approximate
3 · Figure caption · Figure 3a
SSP@ZIF-8-20% proton conductivity at 25 degC and 95% RHapproximately 1.5 x 10-5 S cm-1 from Figure 3aFigure Axis
Approximate
3 · Results and discussion · Figure 3a; Figure S2c,f
SSP@ZIF-8-5% proton conductivity at 25 degC and 95% RHapproximately 2 x 10-5 S cm-1 from Figure 3aFigure Axis
Approximate
3 · Figure caption · Figure 3a
Pristine ZIF-8 proton conductivity at 25 degC and 95% RHapproximately 1 x 10-6 S cm-1 from Figure 3aFigure Axis
Approximate
3 · Results and discussion · Figure 3a

Repeated light on/off EIS switching protocol

SSP@ZIF-8-10% membrane with Ag electrodes for impedance and LED switching · Electrode

Membrane irradiated by visible light for 5 s for on-to-off transformation, then stored in dark for 5 min for off-to-on transformation; repeated 100 times.

Temperature
328
Atmosphere
95% RH; 55 degC; visible light/dark cycling
Geometry
Ag-electrode membrane device
Context
Target composite switching durability
Measurement source
3 · Proton Conductivity Evaluation · Figure 3e; Figure S13
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Reversible switching cycle count100 cycles without significant decreaseText
Exact Reported
4 · Results and discussion · Figure 3e
On/off ratio maintained after cycling at 55 degCaround 1200Text
Approximate
4 · Results and discussion · Figure 3e
Off-mode to on-mode dark recovery time5 minText
Exact Reported
4 · Results and discussion · Figure 3e
On-mode to off-mode response time under visible lightMarked as a best value within this paperwithin 5 seconds; illumination time 5 sText
Rounded Reported
4 · Results and discussion; Table 1 · Figure 3e; Table 1

EIS conductivity after SSP immersion

ZIF-8 membrane after external SSP immersion · Thin Film

Pristine ZIF-8 and ZIF-8 after 12 h immersion in 0.03 wt% SSP aqueous solution compared at different temperatures.

Atmosphere
95% RH inferred from context of temperature-dependent conductivity figures
Geometry
Ag-electrode membrane device
Context
Control for external SSP adsorption
Measurement source
2 · Results and discussion · Figure S7
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
ZIF-8 after SSP immersion conductivity at 25 degCapproximately 2.5 x 10-6 S cm-1 from Figure S7Figure Axis
Approximate
7 · Figure captions · Figure S7
ZIF-8 after SSP immersion conductivity at 75 degCapproximately 2.1 x 10-5 S cm-1 from Figure S7Figure Axis
Approximate
7 · Figure captions · Figure S7
Effect of external SSP immersion on ZIF-8 conductivityNo improvement in proton conductivity was observedText
Qualitative
2 · Results and discussion · Figure S7