Electrical Transport — Direct Observation of Confined I−⋅⋅⋅I2⋅⋅⋅I− Interactions in a Metal–Organic Framework: Iodine Capture and Sensing

5 measurement groups · 11 results

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

Two-point-probe single-crystal conductivity from J-E curves using Keithley 2400.

Electrical conductivity

Activated compound 1 single crystals · Single Crystal

Two ends of single crystals connected to Keithley 2400 with platinum wires and conductive silver paste; I-V curves scanned at voltage ranges set by resistance/sensitivity.

Geometry: single crystal contacted by platinum wires and silver paste
Context: Pristine iodine-free framework control.
Measurement source: p003 / SI p.2 · Two-point probe conductivity measurements · Figure 2a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Electrical conductivity of pristine 1	sigma = 5.72 x 10-11 S cm-1	—	—	Text Exact Reported	p002 / article p.8410 · Main text · Figure 2a

Two-point-probe single-crystal conductivity from J-E curves using Keithley 2400.

Electrical conductivity

I2@1 iodine-loaded crystals · Single Crystal

Iodine-loaded I2@1 single-crystal conductivity compared with compound 1.

Geometry: single crystal contacted by platinum wires and silver paste
Context: Guest-loaded iodine state compared with pristine host.
Measurement source: p002 / article p.8410 · Main text · Figure 2a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Reported conductivity enhancement after iodine loadingMarked as a best value within this paper	Delta sigma = 10^7 times; almost seven orders of magnitude greater	—	—	Text Rounded Reported	p001-p002 / article p.8409-8410 · Abstract and main text · Scheme 1; Table S1
Maximum electrical conductivity of I2@1Marked as a best value within this paper	2.16 x 10-4 S cm-1	—	—	Text Exact Reported	p002 / article p.8410 · Main text · Figure 2a; Table S1

Conductivity after repeated iodine loading and release.

Electrical conductivity

I2@1 iodine-loaded crystals · Single Crystal

Conductivity of I2@1 monitored after iodine removal and recharging; PXRD also tracked crystallinity after cycling.

Atmosphere: iodine release/reloading
Geometry: single-crystal conductivity device
Context: Guest-loaded/released framework state.
Measurement source: p003 / article p.8411 · Main text · Figure 2d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Conductivity after iodine recharging	recovered to 10-4 S cm-1	—	—	Text Approximate	p003 / article p.8411 · Main text · Figure 2d
Conductivity after iodine release	dropped rapidly to 10-10 S cm-1	—	—	Text Approximate	p003 / article p.8411 · Main text · Figure 2d

Photoelectric I-V and photocurrent switching measurement under 450 W xenon lamp.

Photoresponse and photoelectrochemistry Electrical conductivity

I2@1 photoelectric device · Electrode

I2@1 powder-device current-voltage curves from -2 to 2 V in darkness and under illumination; current switching measured with light on/off.

Atmosphere: darkness or illumination
Geometry: powder device connected to Keithley 2400
Context: Guest-loaded iodine state.
Measurement source: p004-p005 / SI p.3-4 · Photoelectric measurements · Figure 3d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Photoelectric I-V scan voltage range	-2 to 2 V	—	—	Text Range	p005 / SI p.4 · Photoelectric measurements
Dark current at 2 V for I2@1 device	3.8 uA	—	—	Text Exact Reported	p003 / article p.8411 · Main text · Figure 3d
Xenon lamp power for photocurrent test	450 W xenon lamp	—	—	Text Exact Reported	p003 / article p.8411 · Main text · Figure 3d
Light current at 2 V for I2@1 deviceMarked as a best value within this paper	5.8 uA	—	—	Text Exact Reported	p003 / article p.8411 · Main text · Figure 3d
Voltage for reported photocurrent comparison	2 V	—	—	Text Exact Reported	p003 / article p.8411 · Main text · Figure 3d

Variable-temperature two-point-probe I-V and Arrhenius analysis of lg(G) versus 1/T.

Electrical conductivity

I2@1 iodine-loaded crystals · Single Crystal

Single-crystal two-point-probe devices placed in thermostat; I-V curves scanned over 293-353 K; activation energy calculated from Arrhenius relation.

Temperature: 293-353
Geometry: single-crystal two-point-probe device
Context: Guest-loaded iodine state.
Measurement source: p003-p004 / SI p.2-3 · Variable-temperature conductivity measurements · Figure 2b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Thermal activation energy for I2@1 conductivityMarked as a best value within this paper	Ea = 0.50(1) eV	—	0.01 eV	Text Exact Reported	p002 / article p.8410 · Main text · Figure 2b