Primary studyPeripheral evidenceSensor

Dense Conductive Metal-Organic Frameworks as Robust Electrocatalysts for Biosensing

Niu K., Sun P., Chen J. et al. · Analytical Chemistry · 2022 · 17177-17185

4materials
7samples
4synthesis routes
14measurements
42results
6claims 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: Medium

The low operating potential of the Cu3(THQ)2-based biosensor improves anti-interference performance for enzyme-inhibitor detection.

Caveat: Interference performance is qualitative in the extracted text and compared with GC/AChE control at higher potential.

main p.7, article p.17183 · Sensing Mechanism · Figure 4e; Figure S13 · Linked to 3 structured results

Application RelevanceSupport assessment: High

GC/Cu3(THQ)2/AChE detects paraoxon rapidly with a 0.37 ng mL-1 LOD over 1-1000 ng mL-1 and works in water, soil, vegetables, and fruit samples.

Caveat: Recovery rates are shown graphically in Figure 5f but exact numerical recoveries are not reported in text.

main p.7, article p.17183 · Conclusions · Figure 5 · Linked to 4 structured results

Composite RoleSupport assessment: High

Cu3(THQ)2 is the key catalytic layer in GC/Cu3(THQ)2/AChE, enhancing thiocholine oxidation while AChE provides enzymatic specificity.

Caveat: Catalytic role is shown in layer-by-layer chronoamperometry and XPS analogue tests using butanethiol as a thiocholine substitute.

main p.6, article p.17182 · Sensing Mechanism · Figure 4b-c · Linked to 3 structured results

Phase AssignmentSupport assessment: High

The three as-prepared materials are crystalline 2D cMOFs rather than metallic oxides or metal particles.

Caveat: PXRD and spectroscopy support phase assignment; no CIF or refined crystallographic table was supplied.

main p.4, article p.17180 · Characterization of 2D cMOFs · Figures 1-2; Figures S1-S2 · Linked to 3 structured results

Structure Property LinkSupport assessment: Medium

The smaller THQ linker in Cu3(THQ)2 creates smaller pores and denser redox-active copper sites, improving HET and biosensor electrocatalysis.

Caveat: Pore sizes are reported approximately and derived from structural/probe interpretation rather than a sorption table.

main p.5, article p.17181 · Electrochemical Performance of 2D cMOFs · Figure 3 · Linked to 4 structured results

Transport MechanismSupport assessment: Medium

Mixed Cu+/Cu2+ valency in Cu3(HHTP)2 and Cu3(THQ)2 promotes charge hopping and improves electrochemical charge transfer.

Caveat: Mechanism is inferred from XPS, EIS, and CV response; no direct electrical conductivity value is reported.

main p.4, article p.17180 · Characterization of 2D cMOFs · Figure 2h-i · Linked to 3 structured results

Material identities

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

MaterialCompositionStructure contextSource
Comparative 2D cMOF series: Ni3(HHTP)2, Cu3(HHTP)2, and Cu3(THQ)2Ni3(HHTP)2 / Cu3(HHTP)2 / Cu3(THQ)2Ni and Cu square-planar metal nodes. · HHTP and THQ hexadentate ligands.2D · Model SystemModel/convenience row for comparative measurements reported only as a series figure.main p.2, article p.17178 · Introduction/overview · Figure 1
Cu3(HHTP)2 two-dimensional conductive metal-organic frameworkBrowse family: Cu₃(HHTP)₂ / Cu–HHTPCu3(HHTP)2Square-planar coordinated Cu2+ nodes with mixed Cu+/Cu2+ valence observed by XPS. · 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP).2D · PristineExpected 2D hexagonal conductive MOF; PXRD matched reported/simulated patterns and HRTEM showed ordered lattice fringes and hexagonal meshes.main p.4, article p.17180 · Characterization of 2D cMOFs · Figures 1-2
Cu3(tetrahydroxy-1,4-quinone)2 conductive metal-organic frameworkBrowse family: Cu₃(C₆O₆)₂ (Cu–THQ / Cu–HHB)Cu3(THQ)2Dense copper catalytic sites; mixed Cu+/Cu2+ valence observed by XPS. · Tetrahydroxy-1,4-quinone (THQ).2D · PristineExpected 2D hexagonal conductive MOF with smaller framework/pore than HHTP analogues; crystalline by PXRD and ordered by HRTEM.main p.1, article p.17177 · Abstract
Ni3(HHTP)2 two-dimensional conductive metal-organic frameworkBrowse family: Ni₃(HHTP)₂ / Ni–HHTPNi3(HHTP)2Square-planar coordinated Ni2+ nodes. · 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP).2D · PristineExpected 2D hexagonal conductive MOF; PXRD matched reported/simulated patterns and HRTEM showed ordered lattice fringes and hexagonal meshes.main p.2, article p.17178 · Introduction/Experimental overview · Figure 1

Sample register

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

Show 7 sample records
SampleForm and roleProcessing and geometrySource
Comparative pristine cMOF powder seriesresearch_0810__mat__cmof_seriesPowder · Model System · ModelComparative series of the three as-prepared cMOF powders.main p.2, article p.17178 · Introduction/overview · Figure 1
As-prepared Cu3(HHTP)2 powderresearch_0810__mat__cu3_hhtp2Powder · Pristine Control · Pristine FrameworkHydrothermally prepared powder; centrifuged, washed, and vacuum dried.main p.3, article p.17179 · Synthesis of Cu3(HHTP)2
As-prepared Cu3(THQ)2 powderresearch_0810__mat__cu3_thq2Powder · Target Sample · Pristine FrameworkHydrothermally prepared under N2 from degassed water; centrifuged, washed, and vacuum dried.main p.3, article p.17179 · Synthesis of Cu3(THQ)2
GC/Cu3(HHTP)2/AChE biosensorresearch_0810__mat__cu3_hhtp2Electrode · Composite Sample · CompositecMOF suspension drop-cast on polished GC, glutaraldehyde added, AChE coated and oven dried.Glassy carbon electrode, 3 mm diameter.main p.5, article p.17181 · Fabrication of Enzymatic Biosensing System · Figure 4a
GC/Cu3(THQ)2/AChE biosensorresearch_0810__mat__cu3_thq2Electrode · Target Sample · CompositecMOF suspension drop-cast on polished GC, glutaraldehyde added, AChE coated and oven dried.Glassy carbon electrode, 3 mm diameter.main p.3, article p.17179 · Preparation of Biosensors · Figure S3
GC/Ni3(HHTP)2/AChE biosensorresearch_0810__mat__ni3_hhtp2Electrode · Composite Sample · CompositecMOF suspension drop-cast on polished GC, glutaraldehyde added, AChE coated and oven dried.Glassy carbon electrode, 3 mm diameter.main p.3, article p.17179 · Preparation of Biosensors · Figure S3
As-prepared Ni3(HHTP)2 powderresearch_0810__mat__ni3_hhtp2Powder · Pristine Control · Pristine FrameworkHydrothermally prepared powder; centrifuged, washed, and vacuum dried.main p.3, article p.17179 · Synthesis of Ni3(HHTP)2