Spectroscopy — Metal-organic framework nanomaterials as novel signal probes for electron transfer mediated ultrasensitive electrochemical immunoassay

Measurement evidence

Spectroscopy

Metal-organic framework nanomaterials as novel signal probes for electron transfer mediated ultrasensitive electrochemical immunoassay · Liu T.-Z., Hu R., Zhang X. et al. · Analytical Chemistry · 2016 · 12516-12523

2 measurement groups · 9 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

chromogenic test, TEM and XPS

X-ray photoelectron spectroscopy Transmission electron microscopy

Cd2+-exchanged cleaned HKUST-1 MOFs · Powder

Ion-exchange controls using K4[Fe(CN)6] in 6 M HAc and 10 mM Cd2+; TEM before/after and XPS Cu/Cd regions.

Context: Cd2+-exchanged HKUST-1 model probe
Measurement source: 4-7 · Supporting Information · Figures S3-S5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cd2+ added for ion-exchange chromogenic test	MOFs + Cd2+ (10 mM)	—	—	Caption Exact Reported	4 · Supporting Information · Figure S3
Cd2+ ion exchange chromogenic evidence	solution changed into deep brown after 10 mM Cd2+ addition	—	—	Text Qualitative	4 · Supporting Information · Figure S3
TEM morphology change after Cd2+ exchange	topological structure of MOFs changed to another morphology	—	—	Text Qualitative	5 · Supporting Information · Figure S4
XPS Cd 3d3/2 maximum after exchange	Cd 3d3/2 maximum at 412.3 eV	—	—	Text Exact Reported	7 · Supporting Information · Figure S5
XPS Cd 3d5/2 maximum after exchange	Cd 3d5/2 maximum at 405.4 eV	—	—	Text Exact Reported	7 · Supporting Information · Figure S5
Cd 3d peak FWHM	FWHM 1.8 eV	—	—	Text Exact Reported	7 · Supporting Information · Figure S5
Cd 3d spin-orbit separation	spin-orbit separation 6.7 eV	—	—	Text Exact Reported	7 · Supporting Information · Figure S5
XPS Cu 2p3/2 peak for MOFs	Cu(2p3/2) peak at 935.0 eV assigned to Cu+2	—	—	Text Exact Reported	7 · Supporting Information · Figure S5

solid-state 13C NMR spectroscopy

Nuclear magnetic resonance

as-prepared COF nanoparticles · Powder

Solid-state NMR used to confirm imine COF formation.

Context: pristine COF precursor/control
Measurement source: 4 · Characterization · Figure S11

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
13C NMR imine carbon peak	about 156 ppm	—	—	Text Approximate	4 · Characterization · Figure S11