Spectroscopy — A one-dimensional conductive metal-organic framework with extended π-d conjugated nanoribbon layers

Measurement evidence

Spectroscopy

A one-dimensional conductive metal-organic framework with extended π-d conjugated nanoribbon layers · Shang S., Du C., Liu Y. et al. · Nature Communications · 2022 · 7599

5 measurement groups · 18 results

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

UPS, LEIPS and infrared diffuse reflection

DDA-Cu MOF film · Thin Film

experimental HOMO/LUMO, electrical gap, optical gap and exciton binding energy

Measurement source
5 · Band structure · Fig. 4a-c; Supplementary Figs. 23-24
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
exciton binding energy Eb~0.3 eVText
Approximate
5 · Band structure · Supplementary Fig. 24
electrical band gap EgMarked as a best value within this paper0.49 eVText
Exact Reported
5 · Band structure · Fig. 4c
indirect optical gap Egopt0.19 eVText
Exact Reported
5 · Band structure · Supplementary Fig. 23
HOMO offset below Ef0.37 eV below EfText
Exact Reported
5 · Band structure · Fig. 4a
LUMO below vacuum level4.40 eV below EvacText
Exact Reported
5 · Band structure · Fig. 4b

ex-situ XPS after electrochemical polarisation

DDA-Cu MOF crystals / bulk precipitate · Powder

DDA-Cu charged at -2 V or +1.4 V, compared with pristine DDA-Cu

Measurement source
11-12 · Supplementary Fig. 20 text · Supplementary Fig. 20
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
reduced Cu0 XPS binding energy932.8 eVText
Exact Reported
11 · Supplementary Fig. 20 text · Supplementary Fig. 20d
oxidised N imine binding energy400.5 eV assigned to C=NH+-CuText
Exact Reported
12 · Supplementary Fig. 20 text · Supplementary Fig. 20e
Cu2+ to Cu+ reduction peak-0.84 VText
Exact Reported
11 · Supplementary Fig. 20 text · Supplementary Fig. 20a
Cu+ to Cu0 reduction peak-1.52 VText
Exact Reported
11 · Supplementary Fig. 20 text · Supplementary Fig. 20a

ICP-OES

DDA-Cu MOF crystals / bulk precipitate · Powder

Cu content in DDA-Cu

Measurement source
4 · Results - Synthesis and characterization
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Cu content measured30.05%Text
Exact Reported
4 · Results - Synthesis and characterization
Cu content theoretical32.5%Text
Exact Reported
4 · Results - Synthesis and characterization

Cu K-edge XANES/EXAFS

DDA-Cu MOF crystals / bulk precipitate · Powder

Cu oxidation-state and local coordination analysis

Measurement source
3-4 · Results - Synthesis and characterization · Fig. 2d,e
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Cu oxidation-state assignmentCu2+ species in MOFQualitative
Qualitative
3 · Results - Synthesis and characterization · Fig. 2d
Cu coordination number4Text
Exact Reported
4 · Results - Synthesis and characterization · Fig. 2e
Cu-N distance1.96 AText
Exact Reported
4 · Results - Synthesis and characterization · Fig. 2e
Cu-O distance1.82 AText
Exact Reported
4 · Results - Synthesis and characterization · Fig. 2e

XPS and EPR

DDA-Cu MOF crystals / bulk precipitate · Powder

Cu 2p XPS; room-temperature EPR

Measurement source
3 · Results - Synthesis and characterization · Supplementary Figs. 2-3
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
EPR g valueg = 2.12Text
Exact Reported
3 · Results - Synthesis and characterization · Supplementary Fig. 3
Cu 2p1/2 binding energy953.8 eVText
Exact Reported
3 · Results - Synthesis and characterization · Supplementary Fig. 2a
Cu 2p3/2 binding energy933.9 eVText
Exact Reported
3 · Results - Synthesis and characterization · Supplementary Fig. 2a