Electrical Transport — High electrical conductivity and high porosity in a Guest@MOF material: Evidence of TCNQ ordering within Cu3BTC2 micropores

5 measurement groups · 16 results

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

Pressed-pellet I-V conductivity

Electrical conductivity

liquid-infiltrated TCNQ@Cu3BTC2, x approximately 0.4 · Powder

Liquid-infiltrated TCNQ@Cu3BTC2 pressed pellet; low-potential measurement used for conductivity because +-1 V sweep is non-ohmic.

Geometry: Pressed pellet, 0.44 mm thickness.
Context: liquid-infiltrated comparison sample
Measurement source: S15-S17 · Liquid phase infiltration · Figure S24

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Liquid-infiltrated TCNQ@Cu3BTC2 conductivity	sigma = 3.20e-04 S cm^-1	—	—	Figure Axis Exact Reported	S17 · Liquid phase infiltration · Figure S24

Pressed-pellet two-point-probe I-V conductivity

Electrical conductivity

10% CuTCNQ/Cu3BTC2 physical mixture · Pellet

Physical mixtures of 1% and 10% CuTCNQ in pristine Cu3BTC2 compared with pristine CuTCNQ.

Temperature: 298
Atmosphere: not separately stated; conductivity method uses inert handling
Geometry: Pressed pellets; thicknesses 0.053 mm for 1% and 0.043 mm for 10% mixture.
Context: physical-mixture controls
Measurement source: S7-S8 · Electrical conductivity measurements · Figure S12; Table S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CuTCNQ reference conductivity in mixture-control plot	sigma_CuTCNQ = 3.62e-02 S cm^-1	—	—	Figure Axis Exact Reported	S7 · Electrical conductivity measurements · Figure S12
10% CuTCNQ/Cu3BTC2 physical mixture conductivity	sigma_10 = 1.16e-04 S cm^-1	—	—	Figure Axis Exact Reported	S7 · Electrical conductivity measurements · Figure S12
1% CuTCNQ/Cu3BTC2 physical mixture conductivity	sigma_1 = <1e-13 S cm^-1	—	<	Figure Axis Range	S7 · Electrical conductivity measurements · Figure S12

Pressed-pellet two-point-probe I-V conductivity

Electrical conductivity

pristine Cu3BTC2 · Powder

Same air-tight press-cell method as VPI series.

Temperature: 298
Atmosphere: Ar-filled glovebox; climate chamber
Geometry: Pressed powder pellet, 0.30 mm thickness.
Context: pristine framework control
Measurement source: 7408 · Results · Figure 6; Table S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Pristine Cu3BTC2 conductivity	immeasurably small	—	—	Qualitative Qualitative	7408 · Results · Figure 6

Pressed-pellet two-point-probe I-V conductivity after sonication

Electrical conductivity

0.8TCNQ@Cu3BTC2 after sonication · Powder

0.8TCNQ@Cu3BTC2 and Cu(TCNQ) measured before and after 1 h sonication in hexane.

Temperature: 298
Atmosphere: not separately stated; conductivity method uses inert handling
Geometry: Pressed pellets; thicknesses 0.63 mm before and 0.20 mm after for 0.8TCNQ@Cu3BTC2.
Context: guest-loaded sample after attempted byproduct/nanowire removal
Measurement source: S7-S8 · Electrical conductivity measurements · Figure S11; Table S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cu(TCNQ) conductivity after sonication	sigma_after = 1.78e-02 S cm^-1	—	—	Figure Axis Exact Reported	S7 · Electrical conductivity measurements · Figure S11
Cu(TCNQ) conductivity before sonication	sigma_before = 3.22e-02 S cm^-1	—	—	Figure Axis Exact Reported	S7 · Electrical conductivity measurements · Figure S11
0.8TCNQ@Cu3BTC2 conductivity after sonication	sigma_after = 3.14e-09 S cm^-1	—	—	Figure Axis Exact Reported	S7 · Electrical conductivity measurements · Figure S11
0.8TCNQ@Cu3BTC2 conductivity before sonication	sigma_before = 1.12e-05 S cm^-1	—	—	Figure Axis Exact Reported	S7 · Electrical conductivity measurements · Figure S11

Pressed-pellet two-point-probe I-V conductivity

Electrical conductivity

VPI xTCNQ@Cu3BTC2 concentration series · Powder

Powders (~70 mg) pressed in air-tight press cell at 3 t (375 MPa) for 2 min; I-V curves swept from -5 V to 5 V at 100 mV s^-1; conductivity calculated as sigma = (I/V)(d/A).

Temperature: 298
Atmosphere: Ar-filled glovebox; climate chamber equilibration
Geometry: Air-tight two-point press cell with stainless steel electrodes; pressed powder pellets.
Context: guest-loaded conductive MOF series compared with pristine Cu3BTC2
Measurement source: 7408, 7411 · Results and Experimental - Electrical conductivity measurements · Figure 6; Figure S9; Table S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Electrical conductivity of 1.0TCNQ@Cu3BTC2Marked as a best value within this paper	1.5 x 10^-4 S cm^-1	—	—	Text Rounded Reported	7405, 7408 · Abstract/Results · Figure 6
Exponential conductivity fit slope	ln(sigma) = 22.63x - 29.85, R = 0.98	—	—	Figure Axis Rounded Reported	7409 · Results · Figure 6
Electrical conductivity of 0.2TCNQ@Cu3BTC2	approximately 5 x 10^-12 S cm^-1 from Figure 6	—	—	Figure Axis Approximate	7409 · Results · Figure 6
Electrical conductivity of 0.5TCNQ@Cu3BTC2	approximately 3 x 10^-9 S cm^-1 from Figure 6	—	—	Figure Axis Approximate	7409 · Results · Figure 6
Electrical conductivity of 0.6TCNQ@Cu3BTC2	approximately 5 x 10^-7 S cm^-1 from Figure 6	—	—	Figure Axis Approximate	7409 · Results · Figure 6
Pellet thickness of 0.8TCNQ@Cu3BTC2	0.63 mm	—	—	SI Table Exact Reported	S8 · Electrical conductivity measurements · Table S1
Pellet thickness of 1.0TCNQ@Cu3BTC2	0.29 mm	—	—	SI Table Exact Reported	S8 · Electrical conductivity measurements · Table S1