Duan J., Goswami S., Patwardhan S. et al. · Journal of Physical Chemistry C · 2022 · 4601-4611
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.
Residual smaller apparent diffusivity for EPD-MOF-525 is attributed mainly to diminished MOF/electrode contact area and lower packing density.
Caveat: Authors cannot fully rule out slow intercrystalline charge transport in EPD films.
6 · Residual Differences · Linked to 3 structured results
XPS N/Zr ratios for ST- and EPD-MOF-525 imply linker/node ratios above ideal and suggest missing-node defects rather than missing-linker defects.
Caveat: Authors state they do not yet understand why bulk and film syntheses yield different apparent defect types.
4 · Film Characterization · Linked to 4 structured results
MOF-525 redox hopping is slower than NU-1000 because weaker linker-to-linker electronic coupling and zig-zag charge-transport paths increase the number of hops needed.
Caveat: NU-1000 values are literature comparisons; computational approximations and revised dihedral angles affect the predicted ordering.
7 · Conclusions · Linked to 4 structured results
For symmetric MOF-525, ST and EPD films show similar apparent redox conductivity/diffusivity, so the large NU-1000 anisotropy is not mainly an adhesion artefact.
Caveat: Residual factor-of-two differences remain; contact area/packing and possible intercrystalline transport are discussed.
7 · Conclusions · Linked to 6 structured results
Potential-step-initiated hole transport is coupled to charge-compensating electrolyte-ion motion, attenuating observed redox-hopping rates.
Caveat: Further studies varying electrolyte ions are recommended by the authors.
5 · Chronoamperometry-Based Assessment · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| fluorine-doped tin oxide blank electrode | FTOnot applicable · not applicable | unknown · Unknownconductive glass electrode control | 2 · Supporting Information · Figure S2 |
| MOF-525 | Zr6O4(mu3-OH)4(TCPP-H2)3hexa-zirconium oxo/hydroxo nodes; nominally 12-connected oxy-Zr6 node · free-base tetracarboxylate porphyrin linker, TCPP = C48H24O8N4(4-) | 3D · Pristinehigh-symmetry porphyrinic Zr MOF, nominally ftw topology; x-, y- and z-symmetric; possible she/PCN-224 caveat discussed from literature | 2 · Introduction |
| free-base TCPP linker control | TCPP-H2 / C48H24O8N4-derived tetracarboxyphenyl porphyrinnot applicable · meso-tetra(4-carboxyphenyl)porphine | 0D · Model Systemmolecular redox control, not a framework | 4 · Results and Discussion |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| bulk MOF-525 powder following ref 71research_0628__mat__mof525 | Powder · Pristine Control · Pristine Framework | bulk form prepared following the method described in ref 71; exact recipe not reproduced in assigned documentsnone | 4 · Results and Discussion |
| EPD-MOF-525research_0628__mat__mof525 | Thin Film · Target Sample · Pristine Framework | electrophoretically deposited from acid-treated MOF-525 powder in toluene using 120 V DC for 15 min; air-dried for 24 hFTO conductive glass cathode/working electrode · 6.5 +/- 0.4 um | 3 · Experimental Section |
| FTO blank CV controlresearch_0628__mat__fto_blank | Electrode · Pristine Control · Unknown | blank electrode measured in 0.5 M TBAPF6 in DCMFTO conductive glass | 2 · Supporting Information · Figure S2 |
| MOF-525 linker-pair computational modelresearch_0628__mat__mof525 | Model · Model System · Model | pairs of linkers extracted from MOF-525 crystal structure; linkers optimised with peripheral COOH groups coplanarnone | 3 · Calculation Methods |
| acid-treated MOF-525 powderresearch_0628__mat__mof525 | Powder · Pristine Control · Pristine Framework | excess powder from solvothermal film synthesis; acid-treated in 26:1 DMF/aqueous 8 M HCl; used for EPD depositionnone | 3 · Experimental Section |
| ST-MOF-525research_0628__mat__mof525 | Thin Film · Target Sample · Pristine Framework | directly solvothermally grown on FTO; acid-treated/activated in 100:1 DMF/aqueous 8 M HCl; solvent exchanged with acetone; air-dried for 24 hfluorine-doped tin oxide (FTO) conductive glass working electrode · 3.4 +/- 0.2 um | 3 · Experimental Section |
| free TCPP linker in DCM/DMFresearch_0628__mat__tcpp_linker | Unknown · Model System · Model | free linker became slightly soluble in DCM with a small amount of DMFelectrochemical solution/control; not a MOF film | 4 · Results and Discussion |