Roy S., Huang Z., Bhunia A. et al. · Journal of the American Chemical Society · 2019 · 15942-15950
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.
UU-100(Co)|GC catalyses hydrogen evolution in mildly acidic aqueous buffer with sustained activity up to 18 h and high turnover numbers relative to molecular cobaloxime controls.
Caveat: Long-term Faradaic efficiency is lower, attributed by the authors to H2 leakage; 18 h electrolysis roughens/flakes crystal surfaces.
15948 · Electrocatalytic HER by UU-100(Co)|GC · Figure S37; Figure S44 · Linked to 5 structured results
PXRD and SEM-EDX support retention of MOF crystallinity/composition after HER, but prolonged electrolysis damages the crystal exterior.
Caveat: The retained PXRD pattern is consistent with the partially collapsed solvent-removed structure rather than fully as-synthesised crystallinity.
15948 · Electrocatalytic HER by UU-100(Co)|GC · Figures S38-S44 · Linked to 2 structured results
UU-100(Co) is assigned as a 3D tetragonal zirconium-cobaloxime MOF with cobaloxime metallolinkers connected to Zr6 oxo clusters.
Caveat: The SI notes severe disorder, missing clusters and/or flexible Zr-cluster orientations; main text and SI Table S3 report inconsistent final unit-cell values.
S6 · Structure determination · Figures S10-S11; Table S3 · Linked to 5 structured results
XPS does not indicate metallic cobalt on the UU-100(Co)|FTO surface.
Caveat: Surface-sensitive XPS result; not a bulk proof of absence.
15945 · Electrochemical Characterization of UU-100(Co)|FTO · Figure S22 · Linked to 1 structured result
More than half of the cobaloxime linkers in UU-100(Co)|FTO are electrochemically addressable.
Caveat: SI notes up to five-fold batch-to-batch variation in surface Co loading depending on FTO electrode quality.
S24 · Figure S27 caption · Figure S27 · Linked to 3 structured results
Charge transport in UU-100(Co)|FTO occurs through redox hopping between redox-active cobaloxime linkers, giving a high apparent diffusion coefficient.
Caveat: Reported as apparent diffusion coefficient, not direct electronic conductivity.
15946 · Electrochemical Characterization of UU-100(Co)|FTO · Figures S30-S34 · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Blank glassy carbon electrode | GC | unknown · Model SystemNon-MOF electrode control. | 15947 · Electrocatalytic HER by UU-100(Co)|GC · Figure 5B |
| [Co(dcpgH)(dcpgH2)]Cl2 cobaloxime metallolinker | C32H23Cl2CoN4O12Molecular six-coordinate cobalt cobaloxime centre · Diphenylglyoxime-4,4'-dicarboxylic acid-derived dioxime ligands | 0D · Model SystemMolecular precursor/model system; single-crystal XRD triclinic P-1. | S8 · Table S1 · Table S1 |
| UU-100(Co) | [Zr6(mu3-O)8(OH)8(cobaloxime)2] model; SI table reports C32Cl2CoN4O18Zr3Hexanuclear zirconium-oxo clusters, Zr6(mu3-O)8(OH)8 · Cobaloxime metallolinker [Co(dcpgH)(dcpgH2)]Cl2 or solvent/chloride-exchanged cobaloxime linker | 3D · Pristine3D tetragonal MOF, likely P4/mbm, determined by cRED/Pawley refinement; rectangular channels with elliptical pores. | 15943 · Results and Discussion · Figure 1; Figure 2 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Blank glassy carbon electroderesearch_0330__mat__mat_blank_gc | Electrode · Pristine Control · Model | Unmodified GC electrode used under the same HER conditions as UU-100(Co)|GC.Glassy carbon | S34 · Electrocatalysis by UU-100(Co)|GC · Figure S45 |
| Bulk UU-100(Co) powderresearch_0330__mat__mat_uu100co | Powder · Target Sample · Pristine Framework | As-synthesised solvothermal powder; washed with DMF and acetone; dried under vacuum. | S5 · Synthesis of bulk UU-100(Co) |
| Activated or solvent-exchanged UU-100(Co) powderresearch_0330__mat__mat_uu100co | Powder · Target Sample · Pristine Framework | DMF removed by vacuum activation or solvent exchange with acetone/methanol; used for N2 sorption. | 15944 · Synthesis and Characterization · Figures S6-S7 |
| Molecular cobaloxime linker solutionresearch_0330__mat__mat_cobaloxime_linker | Unknown · Model System · Model | Solution-phase electrochemical and spectroelectrochemical control in DMF or aqueous buffer. | S3 · General Methods and Instrumentation |
| Cobaloxime SAM|FTO controlresearch_0330__mat__mat_cobaloxime_linker | Electrode · Model System · Model | FTO soaked overnight in 1 mM cobaloxime linker solution in DMF.FTO · self-assembled monolayer | S16 · Preparation of UU-100(Co)|FTO thin film |
| UU-100(Co)|FTO thin-film electroderesearch_0330__mat__mat_uu100co | Electrode · Target Sample · Pristine Framework | Grown solvothermally on cobaloxime-SAM-modified FTO; washed with DMF, stored in DMF, briefly sonicated in DMF, soaked in acetone, dried in air before use.Fluorine-doped tin oxide (FTO) · ~1 um from cross-sectional SEM | 15944 · Electrochemical Characterization of UU-100(Co)|FTO · Figure 3; Figure S18 |
| UU-100(Co)|GC thin-film electroderesearch_0330__mat__mat_uu100co | Electrode · Target Sample · Pristine Framework | GC electrografted with 4-carboxybenzene diazonium salt, then solvothermal UU-100(Co) growth; electrodes stored in DMF and briefly dipped in acetone before PXRD.Carboxylic-acid-functionalised glassy carbon | S17 · Synthesis of UU-100(Co)|GC thin film |