Primary studyCore evidenceTheory Transport

Phosphonate Metal–Organic Frameworks: A Novel Family of Semiconductors

Siemensmeyer K., Peeples C.A., Tholen P. et al. · Advanced Materials · 2020 · 2000474

1materials
2samples
1synthesis routes
7measurements
46results
4claims and caveats

Evidence map

Open a family to keep every result attached to its sample, method and conditions.

Author interpretations and caveats

Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.

Application RelevanceSupport assessment: Medium

The authors suggest phosphonate MOFs like TUB75 could be useful for next-generation electrodes and supercapacitors under harsh operating conditions.

Caveat: No electrochemical supercapacitor measurements are reported in this paper.

5 · conclusion · Linked to 3 structured results

Structure Property LinkSupport assessment: High

TUB75 contains antiferromagnetically coupled 1D copper dimer chains best described by Heisenberg chains.

Caveat: Low-temperature susceptibility includes a small paramagnetic impurity contribution.

4 · main text · Figure 4 · Linked to 4 structured results

Structure Property LinkSupport assessment: Medium

The wide single-crystal conductivity range is interpreted as evidence for directional electrical conductivity in TUB75.

Caveat: The contact area and gold-crystal contact quality are uncertain; authors state actual conductances could be higher.

3 · main text · Linked to 2 structured results

Transport MechanismSupport assessment: High

TUB75 is a semiconductor and is reported as the first semiconducting phosphonate MOF.

Caveat: Conductivity values are approximate and orientation/contact dependent.

5 · conclusion · Linked to 4 structured results

Material identities

Names and aliases are kept exactly within the paper’s own identity model.

MaterialCompositionStructure contextSource
TUB75[{Cu2(4,4'-bpy)0.5}(1,4-NDPA)]Cu-based 1D inorganic building unit; zigzag chain of corner-sharing copper dimers · 1,4-naphthalenediphosphonic acid (1,4-NDPA) and 4,4'-bipyridine (4,4'-bpy)1D · PristinePhosphonate MOF with 1D copper dimer chains linked by polyaromatic 1,4-NDPA; void channels present in the layer view.2 · main text · Figure 1

Sample register

Sample form, processing state and composition status define the context for measurements.

Show 2 sample records
SampleForm and roleProcessing and geometrySource
TUB75 1x3x1 periodic DFT supercellresearch_0517__mat__tub75Model · Model System · ModelGeometry-optimised periodic 1x3x1 supercell based on the experimental crystal structure.2 · Density functional theory calculations · Figure S3
Hand-picked TUB75 crystalsresearch_0517__mat__tub75Single Crystal · Target Sample · Pristine FrameworkPure hand-picked thin green needle crystals; conductivity crystals had average size 0.15 mm x 0.02 mm x 0.02 mm.3 · main text