Spectroscopy — High-mobility band-like charge transport in a semiconducting two-dimensional metal–organic framework

3 measurement groups · 14 results

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

Large-area free-standing Fe3(THT)2(NH4)3 multilayer film · Thin Film

Composition and coordination analysis of Fe3(THT)2(NH4)3 films.

Temperature: about 300
Geometry: Thin film.
Context: pristine framework
Measurement source: SI pp.9-12/44 · Compositional analysis of the Fe3(THT)2(NH4)3 2D MOF film · Figs. S5-S7; Table S2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Fe:S ratio by SEM-EDS	0.9:4	—	—	Caption Approximate	SI p.11/44 · Compositional analysis · Fig. S6
Elemental analysis C found	41.20%	—	—	SI Table Exact Reported	SI p.16/44 · Element analysis of MOF sample · Table S2
Elemental analysis Fe found	15.57%	—	—	SI Table Exact Reported	SI p.16/44 · Element analysis of MOF sample · Table S2
Elemental analysis H found	2.41%	—	—	SI Table Exact Reported	SI p.16/44 · Element analysis of MOF sample · Table S2
Elemental analysis N found	3.80%	—	—	SI Table Exact Reported	SI p.16/44 · Element analysis of MOF sample · Table S2
Elemental analysis S found	36.92%	—	—	SI Table Exact Reported	SI p.16/44 · Element analysis of MOF sample · Table S2
THT S-H stretching band	2516 cm-1; vanished in Fe3(THT)2 films	—	—	Caption Exact Reported	SI p.12/44 · Compositional analysis · Fig. S7
Fe(II)/Fe(III) ratio limit from XPS	<= 1/1000	—	XPS detection limit ~0.1%	Text Exact Reported	SI p.10/44 · Analysis of Fe(II)/Fe(III) ratio from XPS data · Fig. S5b
Fe:S ratio by XPS	0.97:4	—	—	Text Rounded Reported	SI p.9/44 · Compositional analysis · Fig. S5

Large-area free-standing Fe3(THT)2(NH4)3 multilayer film · Thin Film

Mossbauer spectra collected from 5.2 K to 292 K using a 57Co/Rh source; 55 mg sample in Plexiglass container.

Temperature: 5.2-292
Geometry: Ground sample in 13 mm inner-diameter container.
Context: pristine framework
Measurement source: SI pp.3, 13-15/44 · 57Fe Mossbauer spectroscopy measurements · Fig. S8; Table S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Fe(II)/Fe(III) ratio limit from Mossbauer	<= 1/1000	—	Mossbauer detection limit ~0.1%	Text Exact Reported	SI p.15/44 · Analysis of Fe(II)/Fe(III) ratio from 57Fe Mossbauer spectra · Table S1
Major Mossbauer isomer shift at 292 K	IS = 0.181(1) mm/s	—	(1)	SI Table Exact Reported	SI p.15/44 · Analysis of Fe(II)/Fe(III) ratio from 57Fe Mossbauer spectra · Table S1
Major Mossbauer quadrupole splitting at 292 K	QS = 2.797(1) mm/s	—	(1)	SI Table Exact Reported	SI p.15/44 · Analysis of Fe(II)/Fe(III) ratio from 57Fe Mossbauer spectra · Table S1

Large-area free-standing Fe3(THT)2(NH4)3 multilayer film · Thin Film

Optical transmission/absorption used to estimate direct bandgap and below-gap tail.

Temperature: about 300
Geometry: 2D MOF film.
Context: pristine framework
Measurement source: main pp.2-3, article pp.1028-1029 · Synthesis and sample characterization · Fig. 1f

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Infrared absorption onset	~250 meV	0.25 eV	—	Text Approximate	main p.3, article p.1029 · Synthesis and sample characterization · Fig. 1f
Direct optical bandgap from Tauc plotMarked as a best value within this paper	~245 meV	0.245 eV	—	Caption Approximate	main p.2, article p.1028 · Figure caption · Fig. 1f