Spectroscopy — A Light-Responsive Metal–Organic Framework Hybrid Membrane with High On/Off Photoswitchable Proton Conductivity

5 measurement groups · 9 results

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

SSP@ZIF-8-10% membrane · Thin Film

FTIR spectra of ZIF-8, SSP (SP form), SSP@ZIF-8-10%, and loading-series membranes.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
FTIR C-O stretching peak	1095 cm-1	—	—	Text Exact Reported	2 · Results and discussion · Figure 2f; Figure S4
FTIR SO3 stretching peak	1049 cm-1	—	—	Text Exact Reported	2 · Results and discussion · Figure 2f; Figure S4

Synthesised sulfated spiropyran / SSP · Powder

NMR spectra at 293 K comparing thermal equilibrium MC state and SP form after sufficient visible-light irradiation.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Thermal-equilibrium MC-form fraction	71.4%	—	—	Text Exact Reported	3 · Results and discussion · Figure S11
Visible-light SP-form conversion	almost 100%	—	—	Text Approximate	3 · Results and discussion · Figure S11
SSP isolated product yield	458 mg, yield 60.4%	—	—	Text Exact Reported	1-2 · Experimental Procedures

SSP@ZIF-8-10% membrane · Thin Film

SSP@ZIF-8-10% membrane at 298 K during visible-light irradiation.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Visible-light response of SSP@ZIF-8-10% membrane UV-vis spectra	MC absorption decreases upon visible irradiation; membrane colour changes from pink to nearly colourless	—	—	Caption Qualitative	8 · Figure captions · Figure S10

Synthesised sulfated spiropyran / SSP · Powder

SSP in DI water at 298 K under visible-light irradiation and subsequent dark recovery for 0-30 min.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
MC-form UV-vis absorption band	around 508 nm	—	—	Text Approximate	3 · Results and discussion · Figure S9
SP-form UV-vis absorption peak	222 nm	—	—	Text Exact Reported	3 · Results and discussion · Figure S9

SSP@ZIF-8-10% membrane · Thin Film

XPS of ZIF-8 and SSP@ZIF-8-10%, including S 2p inset.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Sulfur signal in SSP@ZIF-8-10%	appearance of sulfur element; no sodium ion signal in SSP/ZIF-8 membrane	—	—	Text Qualitative	2 · Results and discussion · Figure S1