Primary studyCore evidenceTransport Physics

De Novo Design and Facile Synthesis of Highly Crystalline 2D Conductive Metal-Organic Frameworks: A “Rotor-Stator” Strategy

Su X., Zhong Z., Yan X. et al. · Journal of the American Chemical Society · 2024 · 9036-9044

4materials
11samples
6synthesis routes
16measurements
57results
5claims 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: High

Cu-DCB-MOF functions as a high-capacitance cathode active material in a zinc-ion hybrid supercapacitor when formulated with carbon black and Nafion.

Caveat: Electrode is a composite device electrode; the cycling current density differs between main-text wording and the Figure 5 caption.

9041 · Electrochemical Properties of Zinc-Ion Hybrid Supercapacitors · Figure 5 · Linked to 5 structured results

Phase AssignmentSupport assessment: High

XANES/EXAFS support Cu bis(dihydroxy) coordination units and no detectable Cu-Cu interactions in the observed region.

9040 · Crystal Structure Analysis · Figure 4d-f; Table S4 · Linked to 4 structured results

Synthesis MechanismSupport assessment: High

The nonplanar rotor-stator ligand design enables soluble ligand precursors and direct solvothermal growth of highly crystalline 2D c-MOF crystals.

Caveat: CIFs were not included locally; 3D ED tables and figures were available in SI.

9037 · Introduction / Results · Scheme 1 · Linked to 4 structured results

Transport MechanismSupport assessment: Medium

Changing the central rotor aromatic core modulates in-plane electron transport more strongly than the optical band gap, giving large conductivity differences despite a common 1.23 eV band gap.

Caveat: Mechanistic support relies partly on calculated frontier orbitals; pellet conductivities are two-probe values.

9041 · Semiconductor Properties · Figure 4a,c · Linked to 7 structured results

Transport MechanismSupport assessment: Medium

The variable-temperature conductivity data indicate semiconducting behaviour for the biscarbazole-based 2D c-MOFs.

Caveat: Activation energies were not readable from the supplied text layer; Figure S43 image was not among attached pages.

9041 · Semiconductor Properties · Figure S43 · Linked to 1 structured result

Material identities

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

MaterialCompositionStructure contextSource
Cu-DCB-MOF{C30H12N2Cu2.4H2O}n from SI elemental-analysis modelCu bis(dihydroxy) coordination units; Cu oxidation state similar to CuO by XANES · 8OH-DCB, 1,4-bis(2,3,6,7-tetrahydroxy-9H-carbazol-9-yl)benzene2D · PristineLayered 2D conductive MOF with monoclinic C2/m structure from 3D ED; unit cell a = 14.56 Angstrom, b = 22.78 Angstrom, c = 4.93 Angstrom, beta = 98.43 deg.9039 · Crystal Structure Analysis · Figure 1; Table S1
Cu-DCBBT-MOF{C30H8N6Cu2.H2O}n from SI elemental-analysis modelCu bis(dihydroxy) coordination units; Cu oxidation state similar to CuO by XANES · 8OH-DCBBT, 4,7-bis(2,3,6,7-tetrahydroxy-9H-carbazol-9-yl)benzo[1,2-c:4,5-c']bis([1,2,5]thiadiazole)2D · PristineLayered 2D conductive MOF with monoclinic C2/m structure from 3D ED; unit cell a = 13.92 Angstrom, b = 22.67 Angstrom, c = 4.95 Angstrom, beta = 98.86 deg.9039 · Crystal Structure Analysis · Figure 2; Table S3
Cu-DCBT-MOF{C30H10N4Cu2.3H2O}n from SI elemental-analysis modelCu bis(dihydroxy) coordination units; Cu oxidation state similar to CuO by XANES · 8OH-DCBT, 4,7-bis(2,3,6,7-tetrahydroxy-9H-carbazol-9-yl)benzo[c][1,2,5]thiadiazole2D · PristineLayered 2D conductive MOF with monoclinic C1m1 structure from 3D ED; unit cell a = 14.49 Angstrom, b = 23.11 Angstrom, c = 4.87 Angstrom, beta = 99.22 deg.9039 · Crystal Structure Analysis · Figure 2; Table S2
HSE06 models of Cu-DCB-MOF, Cu-DCBT-MOF and Cu-DCBBT-MOFPeriodic DFT models of the three biscarbazole-based Cu c-MOFsModel Cu coordination sites · Model 8OH-DCB, 8OH-DCBT and 8OH-DCBBT linkers after framework formation2D · Model SystemSpin-polarized VASP/PBE-D3 optimisations followed by HSE06 electronic-structure calculations.S39 · Section 12. Calculation of Molecular Orbitals · Figures S38-S40

Sample register

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

Show 11 sample records
SampleForm and roleProcessing and geometrySource
Cu-DCB-MOF micrometer-sized crystalresearch_0060__mat__mat_cu_dcb_mofSingle Crystal · Target Sample · Pristine FrameworkSuspended in distilled water, sonicated for 5 min, drop-cast onto TEM grid and air-dried.copper grid with ultrathin carbon film for 3D ED9039 · Crystal Structure Analysis · Figure 1
Cu-DCB-MOF composite cathode electrode for ZHSresearch_0060__mat__mat_cu_dcb_mofElectrode · Composite Sample · CompositeSlurry of Cu-DCB-MOF active material, conductive carbon black, ethanol and nafion-521 coated on titanium foil and air-dried.pure titanium foil wafer, diameter 12 mmS4 · Electrode Preparation
Cu-DCB-MOF powder pelletresearch_0060__mat__mat_cu_dcb_mofPellet · Pristine Control · Pristine FrameworkPowder pressed at about 1 GPa; connected by gold wires with both surfaces covered by silver paste.S3 · Physical measurements · Table S6
Cu-DCB-MOF black powderresearch_0060__mat__mat_cu_dcb_mofPowder · Target Sample · Pristine FrameworkSolvothermally synthesised, filtered, washed with DMAc, EtOH and DCM, dried under vacuum.S10 · Section 2.2 Synthesis of Cu-MOFs · Scheme S2
Cu-DCBBT-MOF powder pelletresearch_0060__mat__mat_cu_dcbbt_mofPellet · Pristine Control · Pristine FrameworkPowder pressed at about 1 GPa; connected by gold wires with silver paste.S44 · Section 15. Electrical Conductivity Measurements · Table S6
Cu-DCBBT-MOF black powder/crystalsresearch_0060__mat__mat_cu_dcbbt_mofPowder · Target Sample · Pristine FrameworkSolvothermally synthesised, filtered, washed with DMAc, EtOH and DCM, dried under vacuum.S11 · Section 2.2 Synthesis of Cu-MOFs · Scheme S4
Cu-DCBT-MOF powder pelletresearch_0060__mat__mat_cu_dcbt_mofPellet · Pristine Control · Pristine FrameworkPowder pressed at about 1 GPa; connected by gold wires with silver paste.S44 · Section 15. Electrical Conductivity Measurements · Table S6
Cu-DCBT-MOF black powder/crystalsresearch_0060__mat__mat_cu_dcbt_mofPowder · Target Sample · Pristine FrameworkSolvothermally synthesised, filtered, washed with DMAc, EtOH and DCM, dried under vacuum.S10 · Section 2.2 Synthesis of Cu-MOFs · Scheme S3
Cu-DCB-MOF HSE06 modelresearch_0060__mat__mat_model_rotor_stator_mofsModel · Model System · ModelVASP/PBE-D3 geometry and HSE06 electronic-structure model.S39 · Calculation of Molecular Orbitals · Figure S38
Cu-DCBBT-MOF HSE06 modelresearch_0060__mat__mat_model_rotor_stator_mofsModel · Model System · ModelVASP/PBE-D3 geometry and HSE06 electronic-structure model.9040 · Figure 4 caption · Figure 4c
Cu-DCBT-MOF HSE06 modelresearch_0060__mat__mat_model_rotor_stator_mofsModel · Model System · ModelVASP/PBE-D3 geometry and HSE06 electronic-structure model.S40 · Calculation of Molecular Orbitals · Figure S39