Primary studyCore evidenceTheory Transport

Cation-dependent intrinsic electrical conductivity in isostructural tetrathiafulvalene-based microporous metal-organic frameworks

Park S.S., Hontz E.R., Sun L. et al. · Journal of the American Chemical Society · 2015 · 1774-1777

4materials
10samples
4synthesis routes
25measurements
84results
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

The Mn, Co and Cd analogues are permanently microporous after desolvation, with N2 uptake and BET areas comparable to Zn2(TTFTB).

Caveat: BET surface-area unit preserved as printed; no raw isotherm table is supplied.

p002 / article p.1775 · Results · Figure S4 · Linked to 7 structured results

Structure Property LinkSupport assessment: High

Increasing metal-cation radius lengthens the metal-carboxylate chains and pinches the TTF stack, decreasing the shortest inter-TTF S...S distance.

Caveat: Based on isostructural series and crystallographic distances; Co and Zn radii are very similar but S...S distances differ slightly.

p003-p004 / article pp.1776-1777 · Results and conclusion · Table 1 · Linked to 8 structured results

Transport MechanismSupport assessment: Medium

M2(TTFTB) conductivity is anisotropic and largest along the TTF column direction.

Caveat: Perpendicular value is reported only for Zn2(TTFTB), not all four analogues.

p003 / article p.1776 · Results · Figure S9 · Linked to 2 structured results

Transport MechanismSupport assessment: High

Shorter S...S contacts correlate with higher intrinsic single-crystal conductivity along the TTF-column direction, with Cd2(TTFTB) giving the highest average conductivity.

Caveat: Authors note small carrier-density variations may not be fully apparent from bond distances.

p003 / article p.1776 · Results · Figure 4 · Linked to 8 structured results

Transport MechanismSupport assessment: High

DFT indicates the valence band is defined by sulfur and central carbon p orbitals on TTF, supporting a through-space charge-transport pathway governed by orbital overlap in the pi-stacked columns.

Caveat: DFT evidence is qualitative for orbital pathway; conductivity is experimentally measured.

p002 / article p.1775 · Results · Figure 1 · Linked to 3 structured results

Material identities

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

MaterialCompositionStructure contextSource
Cd2(TTFTB)Browse family: Cd₂(TTFTB)[Cd2(C34H16O8S4)(mu2-OH2)(H2O)]·(DMF)1.5(H2O)2; activated formula C34H19Cd2O9.5S4Helical cadmium-oxygen chains; alternating seven- and six-coordinate Cd ions with a bridging water ligand · TTFTB4- = tetrathiafulvalene tetrabenzoate, from H4TTFTB3D · PristineIsostructural M2(TTFTB) framework with pi-stacked TTF columns; Cd analogue has alternating seven- and six-coordinate metal ions.p002 / article p.1775 · Results · Figure 2
Co2(TTFTB)Browse family: Co₂(TTFTB)[Co2(C34H16O8S4)(H2O)2]·(DMF)1.75(H2O)2; activated formula C34H16Co2O8S4Helical chains of corner-sharing cobalt-oxygen pseudo-octahedra · TTFTB4- = tetrathiafulvalene tetrabenzoate, from H4TTFTB3D · PristineIsostructural M2(TTFTB) MOF with helical metal-oxygen chains and pi-stacked TTF columns; main text states P65, SI Table S2 lists P61.p002 / article p.1775 · Results · Figure 2 and Table S2
Mn2(TTFTB)Browse family: Mn₂(TTFTB)[Mn2(C34H16O8S4)(H2O)2]·(DMF)0.7(H2O)1.75; activated formula C34H16Mn2O8S4Helical chains of corner-sharing manganese-oxygen pseudo-octahedra · TTFTB4- = tetrathiafulvalene tetrabenzoate, from H4TTFTB3D · PristineIsostructural M2(TTFTB) MOF with helical metal-oxygen chains, benzoate-connected TTFTB ligands, and infinite pi-stacked TTF columns; main text reports P65.p002 / article p.1775 · Results · Figure 2
Zn2(TTFTB)Browse family: Zn₂(TTFTB)Zn2(TTFTB) / Zn2(C34H16O8S4) frameworkInfinite zinc benzoate chains with zinc coordination sphere · TTFTB4- = tetrathiafulvalene tetrabenzoate, from H4TTFTB3D · PristinePreviously reported chiral pi-stack with 65 symmetry; TTF ligands connected to infinite zinc benzoate chains and used as the isostructural reference.p002 / article p.1775 · Results · Figure 1

Sample register

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

Show 10 sample records
SampleForm and roleProcessing and geometrySource
desolvated Cd2(TTFTB)research_0353__mat__cd2_ttftbPowder · Target Sample · Pristine FrameworkCrystals evacuated at 220 C for 24 h at 4 mtorr; used for elemental analysis and N2 sorption after outgassing.p003 / SI p.S3 · Synthesis of Cd2(TTFTB)
periodic DFT model of Cd2(TTFTB)research_0353__mat__cd2_ttftbModel · Model System · ModelPeriodic VASP model for Cd analogue; SI Figure S1 reports calculated band structure and PDOS.p006 / SI p.S6 · Figure S1
Cd2(TTFTB) dark red needle single crystalsresearch_0353__mat__cd2_ttftbSingle Crystal · Target Sample · Pristine FrameworkAs-synthesised dark red needle single crystals; used for single-crystal conductivity and SCXRD.p003 / SI p.S3 · Synthesis of Cd2(TTFTB)
desolvated Co2(TTFTB)research_0353__mat__co2_ttftbPowder · Target Sample · Pristine FrameworkCrystals evacuated at 200 C for 12 h at 4 mtorr; used for elemental analysis and N2 sorption after outgassing.p003 / SI p.S3 · Synthesis of Co2(TTFTB)
Co2(TTFTB) dark red single crystalsresearch_0353__mat__co2_ttftbSingle Crystal · Target Sample · Pristine FrameworkAs-synthesised dark red single crystals; used for single-crystal conductivity and SCXRD.p003 / SI p.S3 · Synthesis of Co2(TTFTB)
desolvated Mn2(TTFTB)research_0353__mat__mn2_ttftbPowder · Target Sample · Pristine FrameworkCrystals evacuated at 200 C for 12 h at 4 mtorr; used for elemental analysis and N2 sorption after outgassing.p003 / SI p.S3 · Synthesis of Mn2(TTFTB)
Mn2(TTFTB) dark red single crystalsresearch_0353__mat__mn2_ttftbSingle Crystal · Target Sample · Pristine FrameworkAs-synthesised dark red single crystals; used for single-crystal conductivity and SCXRD.p003 / SI p.S3 · Synthesis of Mn2(TTFTB)
desolvated Zn2(TTFTB) reference sampleresearch_0353__mat__zn2_ttftbPowder · Target Sample · Pristine FrameworkPreviously reported/desolvated Zn reference used for comparison of PXRD and surface area; recipe not reproduced here.p002 / article p.1775 · Results
periodic DFT model of Zn2(TTFTB)research_0353__mat__zn2_ttftbModel · Model System · ModelPeriodic VASP model based on experimentally determined unit cell and relaxed with PBEsol/HSE06 workflow.p002 / article p.1775 · Results
Zn2(TTFTB) single crystalsresearch_0353__mat__zn2_ttftbSingle Crystal · Target Sample · Pristine FrameworkPreviously reported Zn analogue; crystals commonly shorter than 300 um in this study and used for carbon-paste-probe conductivity.p004 / SI p.S4 · Single crystal conductivity measurements