Primary studyCore evidenceTransport Physics

Self-amplifying bimetallic conductive metal-organic framework for sensitive label-free electrochemiluminescence detection of aflatoxin B1

Feng R., Fang J., Xu J. et al. · Microchemical Journal · 2025 · 115749

4materials
8samples
4synthesis routes
16measurements
82results
5claims 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: High

The label-free ZnCoMOFs-based ECL immunosensor detects AFB1 over 0.001-100 ng/mL with a 0.31 pg/mL detection limit.

Caveat: SI LOD calculation says CEA in one sentence, apparently a template carry-over typo; main text and Table S1 identify AFB1.

6 · 3.6 · Fig. 6B · Linked to 6 structured results

Application RelevanceSupport assessment: High

Standard-addition tests in commercial corn samples gave recoveries from 96.2% to 97.7% with RSD values below 5%.

Caveat: Main text does not give detailed corn pre-treatment chemistry.

7 · 3.7 · Table 1 · Linked to 3 structured results

Composite RoleSupport assessment: Medium

Au nanoparticles improve the modified electrode conductivity and provide surface active sites for biomolecule immobilisation.

Caveat: Conductivity improvement is supported by CV/EIS trends; no independently fitted conductivity is reported.

5 · 3.4 · Fig. 4 · Linked to 6 structured results

Phase AssignmentSupport assessment: Medium

XRD and EDS evidence support assigning the product as a bimetallic Zn/Co organic framework with HHTP-derived C and O.

Caveat: No CIF or extended formula/topology is reported in supplied documents; assignment rests on XRD and EDS evidence.

4 · 3.1 · Fig. 1 · Linked to 4 structured results

Transport MechanismSupport assessment: Medium

The authors attribute higher ECL performance of ZnCoMOFs to improved conductivity/electron transfer and cobalt-assisted co-reaction acceleration.

Caveat: No independently fitted conductivity value is reported; impedance and ECL evidence are qualitative or figure-estimated.

5 · 3.3 · Fig. 3 and Fig. S3 · Linked to 5 structured results

Material identities

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

MaterialCompositionStructure contextSource
Au nanoparticlesAugold nanoparticles · none0D · Pristineuniform spherical nanoparticles used as a conductive functionalisation layer4 · 3.1. Morphological and structural characteristics · Fig. 1I
HHTPNot specifiednone · 2,3,6,7,10,11-triphenylenehexol0D · Unknownluminescent organic precursor/control ligand1 · Abstract
AFB1/BSA/Ab/Au NPs/ZnCoMOFs/GCE ECL biosensorNot specifiedZnCoMOFs plus Au nanoparticles on glassy carbon electrode · HHTP in ZnCoMOFs; antibody/BSA biomolecular layersunknown · Compositelayer-by-layer composite electrode biosensor based on ZnCoMOFs2 · 2.2. Construction of label-free ECL biosensor · Scheme 1
ZnCoMOFsNot specifiedzinc and cobalt nodes · 2,3,6,7,10,11-triphenylenehexol (HHTP)unknown · Pristinebimetallic HHTP-based conductive metal-organic framework; XRD peaks assigned to (100), (200), and (001) planes1 · Abstract

Sample register

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

Show 8 sample records
SampleForm and roleProcessing and geometrySource
Ab/Au NPs/ZnCoMOFs/GCEresearch_0396__mat__mat_znco_ecl_biosensorElectrode · Composite Sample · Composite6 uL capture antibody Ab1, 1 ug/mL, drop-cast onto Au NPs/ZnCoMOFs/GCEglassy carbon electrode2 · 2.2. Construction of label-free ECL biosensor · Fig. 4
AFB1/BSA/Ab/Au NPs/ZnCoMOFs/GCEresearch_0396__mat__mat_znco_ecl_biosensorElectrode · Composite Sample · Composite6 uL AFB1 solution drop-cast onto blocked biosensor for specific bindingglassy carbon electrode2 · 2.2. Construction of label-free ECL biosensor · Scheme 1
Au NPsresearch_0396__mat__mat_au_npsUnknown · Composite Component · Unknownaqueous citrate-prepared nanoparticle dispersion, centrifuged and stored at 4 deg C in the darkSI text p.S4 · Preparation of Au NPs
Au NPs/ZnCoMOFs/GCEresearch_0396__mat__mat_znco_ecl_biosensorElectrode · Composite Sample · Composite6 uL Au NPs drop-cast on dried ZnCoMOFs/GCE and left for 30 min at room temperatureglassy carbon electrode2 · 2.2. Construction of label-free ECL biosensor · Fig. 4
BSA/Ab/Au NPs/ZnCoMOFs/GCEresearch_0396__mat__mat_znco_ecl_biosensorElectrode · Composite Sample · Composite3 uL 0.1% BSA drop-cast to block nonspecific adsorptionglassy carbon electrode2 · 2.2. Construction of label-free ECL biosensor · Fig. 4
HHTP precursor controlresearch_0396__mat__mat_hhtpPowder · Pristine Control · Unknowncommercial/precursor material used as control4 · 3.2. Spectral characterization of ZnCoMOFs · Fig. 2A
ZnCoMOFs/GCEresearch_0396__mat__mat_znco_ecl_biosensorElectrode · Composite Sample · Composite8 uL ZnCoMOFs solution drop-cast on polished GCE and dried at room temperatureglassy carbon electrode2 · 2.2. Construction of label-free ECL biosensor · Fig. 4
ZnCoMOFs black precipitate/powderresearch_0396__mat__mat_znco_mofsPowder · Target Sample · Mixed Metalcentrifuged, washed three times, vacuum dried at 60 deg C for 24 h2 · 2.1. Preparation of ZnCoMOFs