Spectroscopy — Electrical conductivity through π–π stacking in a two-dimensional porous gallium catecholate metal–organic framework

2 measurement groups · 2 results

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

ATR-IR spectroscopy

Infrared spectroscopy

Supercritical CO2-activated Ga9(HOTP)4 powder · Powder

Bruker Tensor 37 with Germanium ATR accessory; collected in air, averaged over 32 scans from 3700 to 600 cm-1 at 4 cm-1 resolution.

Temperature: ambient
Atmosphere: air
Geometry: Germanium ATR accessory
Context: Pristine Ga9(HOTP)4 powder compared with transition-metal analogues
Measurement source: SI p.4 · Attenuated total reflection infrared spectroscopy · Figure S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
ATR-IR comparison with transition-metal analogues	qualitative similarities between Ga9(HOTP)4 and transition-metal analogues	—	—	Text Qualitative	SI p.4 · Attenuated total reflection infrared spectroscopy · Figure S3

Diffuse reflectance spectroscopy, DRIFTS/UV-vis-NIR stitching and Tauc analysis

Infrared spectroscopy UV-visible and optical absorption spectroscopy

Supercritical CO2-activated Ga9(HOTP)4 powder · Powder

DRIFTS on 0.5-1 wt.% MOF/KBr mixtures, 8000-600 cm-1; diffuse reflectance 350-3300 nm under ambient conditions; UV-vis-NIR and DRIFTS manually stitched for Tauc plots.

Temperature: ambient
Atmosphere: ambient
Geometry: Powder diluted in dry KBr
Context: Pristine Ga9(HOTP)4 powder
Measurement source: SI p.4-S5 · Diffuse reflection spectroscopy · Figure 5B-C

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Experimental optical band gapMarked as a best value within this paper	0.36 eV	0.36 eV	—	Text Exact Reported	main p.228 · Results and discussion · Figure 5C