McKenzie J., Kempler P.A., Brozek C.K. · Chemical Science · 2022 · 12747-12759
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.
Solvent improves charge transport by different microscopic mechanisms: screening ion-charge interactions in the band-type Fe system and accelerating ion transport/ambipolar diffusion in the hopping-type Zn system.
Caveat: Many solvent-series conductivity values are presented graphically; only reported labels and selected figure-read values are captured numerically here.
main p.10, article p.12756 · Conclusion · Linked to 5 structured results
The phase of the Qcoupling CPE is proposed as a metric for distinguishing concerted hopping-type mechanisms (n about 0.5) from band-type conduction impeded by ion interactions (n much less than 0.5).
Caveat: CPE physical interpretation is model-dependent; authors also discuss possible distributions of contact resistance or conduction pathways before assigning Qcoupling.
main p.9, article p.12755 · Discussion · Scheme 3 · Linked to 4 structured results
TMA2FeGe4S10 is assigned as a band-type electronic conductor whose electronic transport is impeded by ion interactions but enhanced by solvent screening.
Caveat: Solvent-treated Fe EIS develops ionic features and highly dispersive CPE phases, so it is not purely electronic under all conditions.
main p.8, article p.12754 · Results and analysis/Discussion · Scheme 2 · Linked to 6 structured results
Adding aqueous TMABr to the Zn system further lowers electronic and ionic resistances, consistent with greater TMA+ concentration gradients promoting electron conduction.
Caveat: TMABr comparison is reported for Zn only and mainly through EIS modelling.
main p.7, article p.12753 · Results and analysis · Fig. S12 · Linked to 4 structured results
TMA2ZnGe4S10 is assigned as a mixed ionic-electronic, redox-hopping conductor in which electron hopping is coupled to TMA+ motion.
Caveat: Dry Zn transport is extremely slow and solvent/electrolyte treatment changes both ionic and electronic resistances.
main p.8, article p.12754 · Results and analysis/Discussion · Scheme 2 · Linked to 6 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| TMA2FeGe4S10 open-framework metal chalcogenide | TMA2FeGe4S10 (TMA = tetramethylammonium)Fe2+ linking germanium sulfide clusters; Fe analogue has delocalized valence bands across sulfur and Fe atoms. · None; inorganic Ge4S10 sulfide clusters with extra-framework TMA+ countercations. | 3D · PristineMicroporous open-framework chalcogenide isostructural with TMA2MGe4Q10 family; phase purity verified by PXRD. | main p.2, article p.12748 · Results and analysis · Scheme 1; Fig. S2 |
| TMA2ZnGe4S10 open-framework metal chalcogenide | TMA2ZnGe4S10 (TMA = tetramethylammonium)Zn2+ linking germanium sulfide clusters; Zn analogue assigned as redox hopping-type mixed conductor. · None; inorganic Ge4S10 sulfide clusters with extra-framework TMA+ countercations. | 3D · PristineMicroporous open-framework chalcogenide isostructural with TMA2FeGe4S10; phase purity verified by PXRD. | main p.2, article p.12748 · Introduction/Results and analysis · Fig. S2 |
| TMA4Ge4S10 precursor cluster salt | TMA4Ge4S10Molecular germanium sulfide cluster precursor. · None; TMA+ countercations. | 0D · UnknownPrecursor cluster verified by PXRD against simulated TMA4Ge4S10 pattern. | SI p.S4 · Synthetic Procedures · Fig. S1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| tma2 fe ge4 s10 pressed pellet after 10 uL DCMresearch_0664__mat__tma2_fe_ge4_s10 | Pellet · Target Sample · Guest Loaded | Dry pressed pellet treated with 10 uL DCM. | SI p.S2 · Experimental Methods |
| Dry TMA2FeGe4S10 pressed pelletresearch_0664__mat__tma2_fe_ge4_s10 | Pellet · Target Sample · Pristine Framework | Powder compressed at 500 psi for 30 min in modified KBr die with stainless-steel contacts. | SI p.S2 · Experimental Methods |
| tma2 fe ge4 s10 pressed pellet after 10 uL EtOHresearch_0664__mat__tma2_fe_ge4_s10 | Pellet · Target Sample · Guest Loaded | Dry pressed pellet treated with 10 uL EtOH. | SI p.S2 · Experimental Methods |
| tma2 fe ge4 s10 pressed pellet after 10 uL formamideresearch_0664__mat__tma2_fe_ge4_s10 | Pellet · Target Sample · Guest Loaded | Dry pressed pellet treated with 10 uL formamide. | SI p.S2 · Experimental Methods |
| tma2 fe ge4 s10 pressed pellet after 10 uL IPAresearch_0664__mat__tma2_fe_ge4_s10 | Pellet · Target Sample · Guest Loaded | Dry pressed pellet treated with 10 uL IPA. | SI p.S2 · Experimental Methods |
| tma2 fe ge4 s10 pressed pellet after 10 uL MeOHresearch_0664__mat__tma2_fe_ge4_s10 | Pellet · Target Sample · Guest Loaded | Dry pressed pellet treated with 10 uL MeOH. | SI p.S2 · Experimental Methods |
| tma2 fe ge4 s10 pressed pellet after 10 uL n-propanolresearch_0664__mat__tma2_fe_ge4_s10 | Pellet · Target Sample · Guest Loaded | Dry pressed pellet treated with 10 uL n-propanol. | SI p.S2 · Experimental Methods |
| TMA2FeGe4S10 pressed pellet after ortho-dichlorobenzeneresearch_0664__mat__tma2_fe_ge4_s10 | Pellet · Target Sample · Guest Loaded | Pressed pellet treated with ortho-dichlorobenzene for temperature-dependent DC conductivity. | SI p.S17 · Temperature Dependent DC Conductivity · Fig. S14 |
| TMA2FeGe4S10 pressed pellet after 10 uL deionised waterresearch_0664__mat__tma2_fe_ge4_s10 | Pellet · Target Sample · Guest Loaded | Dry pressed pellet treated with 10 uL deionised water before DC/EIS measurements. | SI p.S2 · Experimental Methods |
| TMA2FeGe4S10 microcrystalline powderresearch_0664__mat__tma2_fe_ge4_s10 | Powder · Target Sample · Pristine Framework | Bright-orange solid washed, dried with nitrogen stream, stored under positive N2. | SI p.S4 · Synthetic Procedures |
| TMA4Ge4S10 off-white precursor powderresearch_0664__mat__tma4_ge4_s10_precursor | Powder · Target Sample · Pristine Framework | Dried overnight under dynamic vacuum and stored under ambient conditions. | SI p.S4 · Synthetic Procedures |
| tma2 zn ge4 s10 pressed pellet after 10 uL DCMresearch_0664__mat__tma2_zn_ge4_s10 | Pellet · Target Sample · Guest Loaded | Dry pressed pellet treated with 10 uL DCM. | SI p.S2 · Experimental Methods |
| Dry TMA2ZnGe4S10 pressed pelletresearch_0664__mat__tma2_zn_ge4_s10 | Pellet · Target Sample · Pristine Framework | Powder compressed at 500 psi for 30 min in modified KBr die with stainless-steel contacts. | SI p.S2 · Experimental Methods |
| tma2 zn ge4 s10 pressed pellet after 10 uL EtOHresearch_0664__mat__tma2_zn_ge4_s10 | Pellet · Target Sample · Guest Loaded | Dry pressed pellet treated with 10 uL EtOH. | SI p.S2 · Experimental Methods |
| tma2 zn ge4 s10 pressed pellet after 10 uL formamideresearch_0664__mat__tma2_zn_ge4_s10 | Pellet · Target Sample · Guest Loaded | Dry pressed pellet treated with 10 uL formamide. | SI p.S2 · Experimental Methods |
| tma2 zn ge4 s10 pressed pellet after 10 uL IPAresearch_0664__mat__tma2_zn_ge4_s10 | Pellet · Target Sample · Guest Loaded | Dry pressed pellet treated with 10 uL IPA. | SI p.S2 · Experimental Methods |
| tma2 zn ge4 s10 pressed pellet after 10 uL MeOHresearch_0664__mat__tma2_zn_ge4_s10 | Pellet · Target Sample · Guest Loaded | Dry pressed pellet treated with 10 uL MeOH. | SI p.S2 · Experimental Methods |
| tma2 zn ge4 s10 pressed pellet after 10 uL n-propanolresearch_0664__mat__tma2_zn_ge4_s10 | Pellet · Target Sample · Guest Loaded | Dry pressed pellet treated with 10 uL n-propanol. | SI p.S2 · Experimental Methods |
| TMA2ZnGe4S10 pressed pellet after aqueous TMABr treatmentresearch_0664__mat__tma2_zn_ge4_s10 | Pellet · Target Sample · Guest Loaded | Pressed pellet treated with aqueous 0.1 M TMABr solution for EIS comparison. | main p.7, article p.12753 · Results and analysis · Fig. S12 |
| TMA2ZnGe4S10 pressed pellet after 10 uL deionised waterresearch_0664__mat__tma2_zn_ge4_s10 | Pellet · Target Sample · Guest Loaded | Dry pressed pellet treated with 10 uL deionised water before DC/EIS measurements. | SI p.S2 · Experimental Methods |
| TMA2ZnGe4S10 microcrystalline powderresearch_0664__mat__tma2_zn_ge4_s10 | Powder · Target Sample · Pristine Framework | White solid washed with DI water, dried at 150 C for about 12 h, stored ambient. | SI p.S4 · Synthetic Procedures |