Sun L., Liao B., Sheberla D. et al. · Joule · 2017 · 168-177
Open a family to keep every result attached to its sample, method and conditions.
Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.
Ni3(HITP)2 is reported as the first example of an n-type thermoelectric MOF.
Caveat: The first-example statement is an author claim within the literature context as of 2017.
p007 / article p.173 · Discussion · Linked to 2 structured results
The pressed pellets establish a record thermoelectric figure of merit for MOFs in this paper, approximately 10^-3 and 17-fold higher than the cited Cu3(BTC)2-TCNQ record.
Caveat: Record comparison is against literature values cited by the authors, not remeasured in this work.
p006 / article p.172 · Results · Figure 2D · Linked to 4 structured results
The authors did not optimise charge density, leaving power factor and Seebeck coefficient improvement as future opportunities.
p007 / article p.173 · Discussion · Linked to 3 structured results
Ni3(HITP)2 is naturally nanostructured, avoiding the energy-intensive post-synthetic nanostructuring often used to suppress lattice thermal conductivity in inorganic thermoelectrics.
Caveat: The link between grain boundaries/nanostructure and thermal conductivity is argued from morphology and general thermoelectric principles rather than isolated control samples.
p006 / article p.172 · Discussion · Linked to 3 structured results
Soaking Ni3(HITP)2 in water under air at elevated temperature or exposing it to air for several months significantly reduced electrical conductivity.
Caveat: The magnitude of conductivity loss is not reported.
p008 / article p.174 · Experimental Procedures
The ultralow thermal conductivity is attributed mainly to lattice thermal transport suppression from intrinsic pores, heterogeneous bonding/masses, disordered stacking, and nanoparticle grain boundaries.
Caveat: Mechanistic attribution is inferential; intrinsic single-crystal thermal conductivity was not measured because large single crystals were inaccessible.
p006 / article p.172 · Discussion · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Ni3(HITP)2Browse family: Ni₃(HITP)₂ / Ni–HITP | Ni3(2,3,6,7,10,11-hexaiminotriphenylene)2; precise analysed formula reported as Ni3(HITP)1.8Cl0.6·2(acetone)·4H2ONi2+ ions in a layered two-dimensional lattice · HITP3- = 2,3,6,7,10,11-hexaiminotriphenylene | 2D · PristineLayered honeycomb lattice with stacked 2D sheets and approximately 1.5 nm tubular pores parallel to the c direction; TEM/FFT gave hexagonal cell parameters a = b = 20.1 A and c = 6.6 A. | p003 / article p.169 · Introduction · Figure 1A |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| as-synthesised Ni3(HITP)2 powderresearch_0072__mat__ni3_hitp2 | Powder · Target Sample · Pristine Framework | Crude black precipitate isolated by centrifugation, soaked in deionised water, washed with water, ethanol, and acetone, dried under nitrogen for 12 h, and stored in a nitrogen-filled glovebox. | p008 / article p.174 · Experimental Procedures - Characterization of the Powder of Ni3(HITP)2 |
| desolvated Ni3(HITP)2 powderresearch_0072__mat__ni3_hitp2 | Powder · Target Sample · Pristine Framework | Powder heated to 80 C under evacuation for 26 h before N2 sorption; PXRD also shown for desolvated powder. | p008 / article p.174 · Experimental Procedures - Characterization of the Powder of Ni3(HITP)2 · Figure S2 |
| pressed pellet of Ni3(HITP)2research_0072__mat__ni3_hitp2 | Pellet · Target Sample · Pristine Framework | Powder pressed into circular 6 mm pellets at approximately 1 GPa for 15 min; thermoelectric pellets desolvated at 150 C for 2 h before measurement.300 um to 2 mm for pellets generally; 1.8 mm pellet for Seebeck/thermal conductivity measurement | p005 / article p.171 · Results · Figures 1D, 2, S1, S4 |
| tentative thin films of Ni3(HITP)2research_0072__mat__ni3_hitp2 | Thin Film · Target Sample · Pristine Framework | Thin films mentioned only in discussion; synthesis and device details not reported in this paper. | p007 / article p.173 · Discussion |