Spectroscopy — Iodine-induced electrical conductivity of novel columnar lanthanide metal-organic frameworks based on a butterfly-shaped π-extended tetrathiafulvalene ligand

Measurement evidence

Spectroscopy

Iodine-induced electrical conductivity of novel columnar lanthanide metal-organic frameworks based on a butterfly-shaped π-extended tetrathiafulvalene ligand · Gordillo M.A., Benavides P.A., McMillen C. et al. · Materials Advances · 2022 · 6157-6160

4 measurement groups · 8 results

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

diffuse reflectance spectroscopy and Tauc plot analysis

iodine-treated Tb-MOF bulk powder · Powder

Shimadzu UV-2600 with integrated sphere, 200-1100 nm range; optical band gaps determined from Tauc plots.

Context
Iodine-treated target optical gap compared with pristine Tb-MOF.
Measurement source
p003 / article page 6159 · Optical spectroscopy discussion · Fig. 3
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
optical band gap from absorption band, iodine-treated Tb-MOFMarked as a best value within this paper1.6 eV1.6 eVText
Rounded Reported
p003 / article page 6159 · Optical spectroscopy discussion · Fig. 3A
Tauc-plot optical band gap, iodine-treated Tb-MOF1.7 eV1.7 eVText
Rounded Reported
p003 / article page 6159 · Optical spectroscopy discussion · Fig. 3B
absorption band extent of iodine-treated Tb-MOFthrough ca. 760 nm760 nmca.Text
Approximate
p003 / article page 6159 · Optical spectroscopy discussion · Fig. 3A

diffuse reflectance spectroscopy and Tauc plot analysis

pristine Tb-MOF bulk powder/crystals · Powder

Shimadzu UV-2600 with integrated sphere, 200-1100 nm range; optical band gaps determined from Tauc plots.

Context
Pristine-control optical gap.
Measurement source
p001 / SI page S1 · General Materials and Methods · Fig. 3
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
optical band gap from absorption onset, pristine Tb-MOFca. 2 eV2 eVca.Text
Approximate
p003 / article page 6159 · Optical spectroscopy discussion · Fig. 3A
Tauc-plot optical band gap, pristine Tb-MOF2.1 eV2.1 eVText
Rounded Reported
p003 / article page 6159 · Optical spectroscopy discussion · Fig. 3B
absorption onset of pristine Tb-MOF618 nm618 nmText
Rounded Reported
p002 / article page 6158 · Optical spectroscopy discussion · Fig. 3A

solid-state quantitative EPR spectroscopy

iodine-treated Tb-MOF bulk powder · Powder

Freshly prepared and air-exposed iodine-treated powder in 4 mm quartz tube; double integration used for spin quantification.

Temperature
room temperature
Atmosphere
air-exposed sample; measurement atmosphere not specified
Context
Iodine-treated target sample compared with pristine Tb-MOF.
Measurement source
p002 / article page 6158 · EPR discussion · Fig. 2
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
EPR spin concentration in iodine-treated Tb-MOFMarked as a best value within this paper7.7 x 10^20 spins mol^-1770000000000000000000 spins mol^-1Text
Rounded Reported
p002 / article page 6158 · EPR discussion · Fig. 2

solid-state quantitative EPR spectroscopy

pristine Tb-MOF bulk powder/crystals · Powder

Freshly prepared and air-exposed powdered sample in 4 mm quartz tube; double integration used for spin quantification.

Temperature
room temperature
Atmosphere
air-exposed sample; measurement atmosphere not specified
Context
Pristine-control radical population.
Measurement source
p001 / SI page S1 · General Materials and Methods · Fig. 2
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
EPR spin concentration in pristine Tb-MOF1.7 x 10^19 spins mol^-117000000000000000000 spins mol^-1Text
Rounded Reported
p002 / article page 6158 · EPR discussion · Fig. 2