Primary studyCore evidenceTransport Physics

Tunable electrical conductivity of a new 3D MOFs: Cu-TATAB

Huang Q.-Q., Lin Y.-J., Zheng R. et al. · Inorganic Chemistry Communications · 2019 · 119-124

2materials
4samples
2synthesis routes
9measurements
32results
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.

Phase AssignmentSupport assessment: High

Cu-TATAB is a cubic 3D porous MOF containing two types of Cu24 cages and open channels.

Caveat: Bond distance/angle details cited to missing SI Tables S1-S2 were not available for extraction.

3 · Results and discussion · Figs. 1-2 · Linked to 4 structured results

Phase AssignmentSupport assessment: Medium

Cu-TATAB retains a similar crystal structure after TCNQ doping.

Caveat: Supported by qualitative PXRD comparison in the main text; no refined doped structure is reported.

5 · Results and discussion · Fig. 3a · Linked to 1 structured result

Structure Property LinkSupport assessment: High

TCNQ doping increases Cu-TATAB conductivity by more than four orders of magnitude, transforming it from an insulator to a semiconductor.

Caveat: Conductivity measured by two-probe pressed-pellet method; no error bars or replicate statistics reported.

5 · Conclusion · Fig. 4b-d · Linked to 4 structured results

Transport MechanismSupport assessment: Medium

TCNQ molecules form localised conducting regions/charge-transfer channels in Cu-TATAB, enabling electron hopping between localised states under an applied field.

Caveat: Mechanism inferred from spectroscopy and Mott VRH fitting; exact TCNQ loading and microscopic distribution are not quantified.

5 · Results and discussion · Figs. 3b-d and 4d · Linked to 4 structured results

Material identities

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

MaterialCompositionStructure contextSource
Cu-TATAB[Cu2(TATAB)3].7.5H2O; crystal-table empirical formula C32H21Cu2N8O10Cu(II) paddlewheel secondary building units; two crystallographically independent Cu(II) atoms coordinated by five oxygen atoms · TATAB3- polyacid linker from H3TATAB3D · PristineCubic 3D porous MOF, space group Im-3, with two types of icosahedral Cu24 cages and open microchannels along three orthogonal directions.2 · Introduction / Results and discussion · Table 1; Figs. 1-2
TCNQ@Cu-TATABTCNQ-doped Cu-TATAB; exact guest loading not reportedCu(II) paddlewheel secondary building units retained after TCNQ doping · TATAB3- framework linker with TCNQ guest/dopant in the channels3D · PristinePost-synthetically TCNQ-doped Cu-TATAB retaining a similar crystal structure by PXRD and showing TCNQ coordination/charge-transfer signatures by FT-IR, TGA, and UV-vis-NIR.5 · Results and discussion · Figs. 3-4

Sample register

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

Show 4 sample records
SampleForm and roleProcessing and geometrySource
Activated Cu-TATAB green crystalsresearch_0110__mat__mat_cu_tatabSingle Crystal · Pristine Control · Pristine FrameworkGreen solvothermal crystals washed with DMF four times and soaked in methanol for one week to remove solvent from the channels.2 · 2.2. Synthesis of Cu-TATAB crystals
Cu-TATAB pressed pelletresearch_0110__mat__mat_cu_tatabPellet · Pristine Control · Pristine FrameworkPressed pellet with both faces painted with silver paint for two-probe electrical measurements.5 · Results and discussion · Fig. 4b
TCNQ@Cu-TATAB dark crystalsresearch_0110__mat__mat_tcnq_cu_tatabSingle Crystal · Target Sample · DopedActivated Cu-TATAB soaked in methanol solution of TCNQ for three days, changing colour from green to dark.4 · Results and discussion · Fig. 4a
TCNQ@Cu-TATAB pressed pelletresearch_0110__mat__mat_tcnq_cu_tatabPellet · Target Sample · DopedDoped Cu-TATAB pressed into a pellet with both faces painted with silver paint for two-probe I-V measurements.5 · Results and discussion · Fig. 4b-d