Spectroscopy — Redox-Active Two-Dimensional Tetrathiafulvalene-Copper Metal-Organic Framework with Boosted Electrochemical Performances for Supercapatteries

Measurement evidence

Spectroscopy

Redox-Active Two-Dimensional Tetrathiafulvalene-Copper Metal-Organic Framework with Boosted Electrochemical Performances for Supercapatteries · Zhang Z.-R., Ren Z.-H., Luo C.-Y. et al. · Inorganic Chemistry · 2023 · 4672-4679

5 measurement groups · 18 results

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

solid-state electron paramagnetic resonance

Iodine-treated crystals of 1 (1-ox) · Single Crystal

EPR spectra of 1, 1-ox and 1-ox' in the solid state, same parameters; figure caption states 110 K.

Temperature
110
Geometry
solid-state sample
Context
iodine-treated samples compared with pristine 1
Measurement source
p003 / 4674 · 2.2. Characterizations · Figure 2a
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
strong EPR signal for 1-ox and 1-ox'g = 2.019Text
Exact Reported
p003 / 4674 · 2.2. Characterizations · Figure 2a
weak Cu2+ EPR signal in pristine 1g = 2.06Text
Rounded Reported
p003 / 4674 · 2.2. Characterizations · Figure 2a
weak TTF radical EPR signal in pristine 1g = 2.008Text
Exact Reported
p003 / 4674 · 2.2. Characterizations · Figure 2a

ex situ XPS after electrochemical charge/discharge

1-ox working electrode · Electrode

XPS C 1s and Cu 2p3/2 spectra of 1-ox electrode in pristine, fully discharged and fully charged states after cycling.

Atmosphere
XPS vacuum after electrochemical cycling
Geometry
cycled 1-ox electrode
Context
mechanistic spectroscopy on target electrode
Measurement source
p006 / 4677 · 2.3. Electrochemical Behaviors · Figure 5
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
C=C to C-C ratio after charge3.1/1Text
Rounded Reported
p006 / 4677 · 2.3. Electrochemical Behaviors · Figure 5a
Cu 2p3/2 binding energy after charge/discharge932.5 eVText
Exact Reported
p006 / 4677 · 2.3. Electrochemical Behaviors · Figure 5b
C=C to C-C ratio after discharge1.5/1Text
Rounded Reported
p006 / 4677 · 2.3. Electrochemical Behaviors · Figure 5a

thermogravimetric analysis

Iodine-treated crystals of 1 (1-ox) · Single Crystal

TGA of 1, 1-ox and 1-ox' under nitrogen stream 100 mL min^-1 at 20 C min^-1.

Atmosphere
N2
Geometry
solid sample
Context
iodine-treated samples compared with pristine 1
Measurement source
p004 / SI · 1.1 General Remarks · Figure S6
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
1-ox physisorbed iodine mass loss14.5%Text
Exact Reported
p003 / 4674 · 2.2. Characterizations · Figure S6
1-ox I3- iodine mass loss before 230 C20.6% before 230 CText
Exact Reported
p003 / 4674 · 2.2. Characterizations · Figure S6
1-ox' I3- iodine mass loss before 250 C23.3% before 250 CText
Exact Reported
p003 / 4674 · 2.2. Characterizations · Figure S6
weight loss of pristine 1 before 300 C0.7% at room temperature to 300 CText
Rounded Reported
p003 / 4674 · 2.2. Characterizations · Figure S6
thermal stability of pristine 1300 CText
Rounded Reported
p003 / 4674 · 2.2. Characterizations · Figure S6
thermal stability of iodine-treated samples230 C for 1-ox and 1-ox'Text
Rounded Reported
p003 / 4674 · 2.2. Characterizations · Figure S6

diffuse-reflectance UV-vis-NIR absorption

Iodine-treated crystals of 1 (1-ox) · Single Crystal

Room-temperature optical diffuse reflectance spectra converted to absorption using Kubelka-Munk function.

Temperature
room temperature
Geometry
microcrystal sample
Context
iodine-treated samples compared with TTF(py)4 and pristine 1
Measurement source
p004 / 4675 · 2.2. Characterizations · Figure 2c
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
TTF radical-cation NIR absorption enhancementenhancement in 800-1100 nm regionText
Range
p004 / 4675 · 2.2. Characterizations · Figure 2c

X-ray photoelectron spectroscopy

Hexane-washed iodine-treated crystals of 1 (1-ox') · Single Crystal

XPS survey and deconvoluted Cu 2p, C 1s, N 1s, S 2p and I 3d spectra for 1-ox' compared with 1.

Atmosphere
XPS vacuum
Geometry
solid sample
Context
iodine-treated framework after washing
Measurement source
p003 / 4674 · 2.2. Characterizations · Figures S9 and S10
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
C=C to C-C C 1s area ratio in pristine 13.8/1Text
Rounded Reported
p003 / 4674 · 2.2. Characterizations · Figures S9b and S10b
C=C to C-C C 1s area ratio in 1-ox'3.2/1Text
Rounded Reported
p003 / 4674 · 2.2. Characterizations · Figures S9b and S10b
Cu 2p3/2 binding energy in iodine-treated sample932.0 eVText
Rounded Reported
p003 / 4674 · 2.2. Characterizations · Figures S9 and S10
I 3d3/2 binding energy in 1-ox'630.7 eVText
Exact Reported
p003 / 4674 · 2.2. Characterizations · Figure S9f
I 3d5/2 binding energy in 1-ox'619.1 eVText
Exact Reported
p003 / 4674 · 2.2. Characterizations · Figure S9f