Spectroscopy — Redox-Active Ni(II) Nodes Induced Electrochromism in a Two-Dimensional Conductive Metal-Organic Framework

4 measurement groups · 11 results

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

In situ X-band electron paramagnetic resonance (EPR)

Electron paramagnetic resonance

Ni3(HITP)2-362 nm/FTO electrode · Electrode

Sandwich electrochromic device using Ni3(HITP)2 film, ITO-quartz substrate, and 1 M LiClO4/PC; Bruker A300 at 298 K, 16.65 mW, 9.85 GHz, 1 mT/100 kHz.

Temperature: 298
Geometry: Sandwich electrochromic EPR cell
Context: pristine Ni3(HITP)2 film in electrochemical device
Measurement source: p004 · Results and Discussion; Experimental Section 4.5 · Figure 2d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Initial EPR g-value	g = 2.002	—	—	Text Exact Reported	p004 · Results and Discussion · Figure 2d
Reduced-state Ni(I) EPR g-parallel	g_parallel = 2.250	—	—	Text Exact Reported	p004 · Results and Discussion · Figure 2d
Reduced-state Ni(I) EPR g-perpendicular	g_perp = 2.074	—	—	Text Exact Reported	p004 · Results and Discussion · Figure 2d

FTIR spectroscopy

Infrared spectroscopy

Ni3(HITP)2 precipitate/powder · Powder

NEXUS-670 spectrometer; used to identify Ni-N bond absorption.

Context: pristine Ni3(HITP)2 powder
Measurement source: p002 · Results and Discussion; Experimental Section 4.5 · Figure S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
FTIR Ni-N absorption peak	501 cm-1	—	—	Text Exact Reported	p002 · Results and Discussion · Figure S3

Raman spectroscopy

Ni3(HITP)2 precipitate/powder · Powder

inVia Reflex laser Raman spectrometer with excitation wavelength 532 nm.

Context: pristine Ni3(HITP)2 powder/film
Measurement source: S-8 / p008 · Supporting Figure S4 · Figure S4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Raman D-band-like peak	about 1368 cm-1	—	—	Caption Approximate	S-8 / p008 · Supporting Figure S4 · Figure S4
Raman G-band-like peak	about 1540 cm-1	—	—	Caption Approximate	S-8 / p008 · Supporting Figure S4 · Figure S4
Ligand G/D peak-area ratio	0.50	—	—	Caption Exact Reported	S-8 / p008 · Supporting Figure S4 · Figure S4
Ni3(HITP)2 G/D peak-area ratioMarked as a best value within this paper	0.82	—	—	Caption Exact Reported	S-8 / p008 · Supporting Figure S4 · Figure S4

X-ray photoelectron spectroscopy (XPS)

X-ray photoelectron spectroscopy

Ni3(HITP)2 precipitate/powder · Powder

ESCALab 250Xi spectrometer; Ni 2p and N 1s binding energies used for bonding assignment.

Context: pristine Ni3(HITP)2 precipitate
Measurement source: p002 · Results and Discussion; Experimental Section 4.5 · Figure S2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
N 1s binding energy	399.0 eV	—	—	Text Exact Reported	p002 · Results and Discussion · Figure S2
Ni 2p binding energy	856.1 eV	—	—	Text Exact Reported	p002 · Results and Discussion · Figure S2
Ni 2p binding energy	873.3 eV	—	—	Text Exact Reported	p002 · Results and Discussion · Figure S2