cMOF Evidence Base

Synthesis evidence

Photoactivated conductive MOF thin film arrays on micro-LEDs for chemiresistive gas sensing

Lee K., Jo Y.-M., Sohn M.S. et al. · Nature Communications · 2025 · 9612

4 structured synthesis routes

Completeness describes how fully the route could be reconstructed from the main article and supporting information.

Complete recipeSource: Both

Route 1: Other

9 · Methods - Preparation of M3HHTP2 overlayers

Metal precursorscobalt(II) acetate tetrahydrate; 0.1 mM in ethanol
Linker precursorsH6HHTP; 0.02 mM in ethanol
Solventsethanol; pure ethanol wash
Atmosphereambient/not specified
Temperatureroom temperature
Time0.05 h per overlayer cycle exposure (1 min metal + 2 min ligand), plus ethanol wash
Substrate orientationas-prepared CuHHTP-5C sensors
Work-upwashed with pure ethanol between each step to remove residual reagents
Activationnone reported
Scalability contextOverlayer cycles y = 1, 3, 5 and 7 were assessed.
Show 3 structured reagent records
RoleReagentAmount / concentrationSource
Metal Sourcecobalt(II) acetate tetrahydrate0.1 mM9 · Methods - Preparation of M3HHTP2 overlayers
LinkerH6HHTP0.02 mM9 · Methods - Preparation of M3HHTP2 overlayers
SolventethanolNot specified9 · Methods - Preparation of M3HHTP2 overlayers
Complete recipeSource: Both

Route 2: Other

8 · Methods - Preparation of Cu3HHTP2 sensing films

Metal precursorscopper(II) acetate hydrate; 1.0 mM in ethanol
Linker precursorsH6HHTP; 0.2 mM in ethanol
Solventsethanol; pure ethanol wash
Atmosphereambient/not specified
Temperatureroom temperature
Time0.05 h per LBL cycle exposure (1 min metal + 2 min ligand), plus ethanol wash
Substrate orientationUV/ozone-treated Au-interdigitated silicon substrates and uLED substrates
Work-upwashed with pure/clean ethanol between exposures to remove residual reagents/salts
ActivationUV/ozone substrate treatment for 10 min before LBL; no post-synthetic activation reported
Scalability contextLBL cycle number controls thickness and density; applied to x = 1, 3, 5, 7, 9, 11, 13 and 15 cycles.
Show 3 structured reagent records
RoleReagentAmount / concentrationSource
Metal Sourcecopper(II) acetate hydrate1.0 mM8 · Methods - Preparation of Cu3HHTP2 sensing films
LinkerH6HHTP0.2 mM8 · Methods - Preparation of Cu3HHTP2 sensing films
SolventethanolNot specified8 · Methods - Preparation of Cu3HHTP2 sensing films
Complete recipeSource: Both

Route 3: Other

23 · Supplementary Figures · Supplementary Fig. 16

Metal precursorscopper(II) acetate hydrate; 1.0 mM in ethanol
Linker precursorsH6HHTP; 0.2 mM in ethanol
Solventsethanol; pure ethanol wash
Atmosphereambient/not specified
Temperatureroom temperature
Time0.05 h per LBL cycle exposure (1 min metal + 2 min ligand), plus ethanol wash
Substrate orientationuLED platform insulated with SiO2 and patterned with Au interdigitated electrode
Work-upwashed with pure ethanol between exposures
Activationphotoactivation during sensing by blue or UV uLED; substrate UV/ozone treatment before LBL
Scalability contextuLED chip size 5 x 5 mm2; individual uLED 100 x 100 um2; cMOF on IDE above uLED.
Show 3 structured reagent records
RoleReagentAmount / concentrationSource
Metal Sourcecopper(II) acetate hydrate1.0 mM23 · Supplementary Figures · Supplementary Fig. 16
LinkerH6HHTP0.2 mM23 · Supplementary Figures · Supplementary Fig. 16
SolventethanolNot specified23 · Supplementary Figures · Supplementary Fig. 16
Complete recipeSource: Both

Route 4: Other

9 · Methods - Preparation of M3HHTP2 overlayers

Metal precursorsnickel(II) acetate tetrahydrate; 0.1 mM in ethanol
Linker precursorsH6HHTP; 0.02 mM in ethanol
Solventsethanol; pure ethanol wash
Atmosphereambient/not specified
Temperatureroom temperature
Time0.05 h per overlayer cycle exposure (1 min metal + 2 min ligand), plus ethanol wash
Substrate orientationas-prepared CuHHTP-5C sensors
Work-upwashed with pure ethanol between each step to remove residual reagents
Activationnone reported
Scalability contextOverlayer cycles y = 1, 3, 5 and 7 were assessed.
Show 3 structured reagent records
RoleReagentAmount / concentrationSource
Metal Sourcenickel(II) acetate tetrahydrate0.1 mM9 · Methods - Preparation of M3HHTP2 overlayers
LinkerH6HHTP0.02 mM9 · Methods - Preparation of M3HHTP2 overlayers
SolventethanolNot specified9 · Methods - Preparation of M3HHTP2 overlayers