Primary studyCore evidenceTransport Physics

A comparative study of honeycomb-like 2D π-conjugated metal-organic framework chemiresistors: conductivity and channels

Yao M.-S., Wang P., Gu Y.-F. et al. · Dalton Transactions · 2021 · 13236-13245

4materials
15samples
6synthesis routes
10measurements
42results
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.

Structure Property LinkSupport assessment: High

H2en2+ counterions in THQ-containing cMOFs narrow channels and reduce accessible N2 porosity, most strongly in Cu-THQ.

Caveat: Counterion occupancy is described structurally; direct guest occupancy quantification beyond the framework charge argument is not provided here.

p005; article page 13239 · Results and discussion · Fig. 4 · Linked to 3 structured results

Structure Property LinkSupport assessment: Medium

Cu-HHTP nanosheets respond/recover faster than nanorods because shorter c-axis diffusion paths reduce 1D-channel gas diffusion limitations.

Caveat: No direct diffusion coefficient is reported; interpretation is based on morphology and response-recovery curves.

p007-p008; article pages 13241-13242 · Results and discussion; Conclusions · Fig. 7a · Linked to 1 structured result

Structure Property LinkSupport assessment: High

Overall meso- and microporosity, rather than only honeycomb pore size, controls response-recovery speed.

Caveat: Porosity-speed link is inferred from BJH/HK distributions and response curves, not from direct gas diffusivity measurements.

p007; article page 13241 · Results and discussion · Fig. 7 · Linked to 3 structured results

Transport MechanismSupport assessment: High

Cu-HITP with CuN4 nodes shows both p-type responses to reducing gases and n-type response to NO2.

Caveat: Authors state that the NO2 charge-transfer mechanism remains challenging and needs further work.

p005; article page 13239 · Results and discussion · Fig. 6a · Linked to 4 structured results

Transport MechanismSupport assessment: High

Lower-conductivity CuO4-node cMOFs produce higher relative NH3 chemiresistive responses, with Cu-THQ giving the largest response.

Caveat: Conductivity values are mostly compiled from literature rather than newly measured in this paper; sensor recovery for Cu-THQ is limited at 100 ppm.

p006-p007; article pages 13240-13241 · Results and discussion; Conclusions · Fig. 6c · Linked to 5 structured results

Material identities

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

MaterialCompositionStructure contextSource
Cu-HHTPBrowse family: Cu₃(HHTP)₂ / Cu–HHTPCu3(HHTP)2CuO4 square-planar nodes · HHTP (2,3,6,7,10,11-hexahydroxytriphenylene; source text writes hexahydrotriphenylene)2D · PristineHoneycomb-like 2D pi-conjugated cMOF; hexagonal P6/mmm-type lattice; AB slipped-parallel stacking.p003; article page 13237 · Results and discussion · Fig. 1
Cu-HHTP-THQBrowse family: Cu₃(HHTP)(THQ) / Cu–HHTP–THQCu3(HHTP)(THQ)CuO4 square-planar nodes with H2en2+ counterions · HHTP and THQ (tetrahydroxy-1,4-quinone)2D · PristineDual-ligand honeycomb-like 2D pi-conjugated cMOF; trigonal P3m1; AB slipped-parallel stacking with counterions occupying channels.p003; article page 13237 · Results and discussion · Fig. 1
Cu-HITPBrowse family: Cu₃(HITP)₂ / Cu–HITPCu3(HITP)2 / Cu3(HATP-derived)2, as reported in comparative cMOF literatureCuN4 square-planar nodes · hexaaminotriphenylene-derived HITP/HATP ligand2D · PristineHoneycomb-like 2D pi-conjugated cMOF; hexagonal P6/mmm-type unit cell discussed with Cu-HHTP; neutral framework without channel counterions after activation.p003; article page 13237 · Results and discussion · Fig. 1
Cu-THQBrowse family: Cu₃(C₆O₆)₂ (Cu–THQ / Cu–HHB)Cu-THQ framework with square-planar CuO4 centres and H2en2+ counterionsCuO4 square-planar nodes with net negative framework charge · THQ (tetrahydroxy-1,4-quinone)2D · PristineHoneycomb-like 2D pi-conjugated cMOF; C-centred orthorhombic unit cell; AB slipped-parallel stacking.p004; article page 13238 · Results and discussion · Fig. 2

Sample register

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

Show 15 sample records
SampleForm and roleProcessing and geometrySource
Cu-HHTP individual microcrystal conductivity comparison sampleresearch_0128__mat__mat_cu_hhtpSingle Crystal · Paper Level Unspecified · Pristine Frameworkcomparative literature value tabulated by this paperp006; article page 13240 · Results and discussion · Table 1
Cu-HHTP nanorods (NRs)research_0128__mat__mat_cu_hhtpPowder · Target Sample · Pristine Frameworkwashed with water and methanol, dried under vacuum at 80 deg C for 12 hp008; article page 13242 · Preparation of Cu-HHTP NRs
Cu-HHTP NR thick-film chemiresistorresearch_0128__mat__mat_cu_hhtpElectrode · Target Sample · Pristine Frameworkmethanol suspension drop-coated, activated and aged at 5 V in flowing dry air at 65 deg C for 3 hAl2O3 substrate with precoated Ag-Pd interdigital electrodes · thick film; thickness not reportedp005; article page 13239 · Results and discussion · Fig. 5
Cu-HHTP nanosheets (NSs)research_0128__mat__mat_cu_hhtpNanosheet · Target Sample · Pristine Frameworkwashed with water and methanol, dried under vacuum at 80 deg C for 12 hp008; article page 13242 · Preparation of Cu-HHTP NSs
Cu-HHTP NS thick-film chemiresistorresearch_0128__mat__mat_cu_hhtpElectrode · Target Sample · Pristine Frameworkmethanol suspension drop-coated, activated and aged at 5 V in flowing dry air at 65 deg C for 3 hAl2O3 substrate with precoated Ag-Pd interdigital electrodes · thick film; thickness not reportedp007; article page 13241 · Results and discussion · Fig. 7
Cu-HHTP pellet conductivity comparison sampleresearch_0128__mat__mat_cu_hhtpPellet · Paper Level Unspecified · Pristine Frameworkcomparative literature value tabulated by this paperp006; article page 13240 · Results and discussion · Table 1
Cu3(HHTP)(THQ) nanowiresresearch_0128__mat__mat_cu_hhtp_thqPowder · Target Sample · Guest Loadedaqueous nanowire fraction collected, aged at 60 deg C, filtered, washed and dried under vacuum at 65 deg C overnightp008; article page 13242 · Fabrication of Cu-HHTP-THQ nanowires
Cu-HHTP-THQ pellet conductivity comparison sampleresearch_0128__mat__mat_cu_hhtp_thqPellet · Paper Level Unspecified · Guest Loadedcomparative literature value tabulated by this paperp006; article page 13240 · Results and discussion · Table 1
Cu-HHTP-THQ thick-film chemiresistorresearch_0128__mat__mat_cu_hhtp_thqElectrode · Target Sample · Guest Loadedmethanol suspension drop-coated, activated and aged at 5 V in flowing dry air at 65 deg C for 3 hAl2O3 substrate with precoated Ag-Pd interdigital electrodes · thick film; thickness not reportedp006; article page 13240 · Results and discussion · Fig. 6b
Cu-HITP pellet conductivity comparison sampleresearch_0128__mat__mat_cu_hitpPellet · Paper Level Unspecified · Pristine Frameworkcomparative literature value tabulated by this paperp006; article page 13240 · Results and discussion · Table 1
Cu-HITP powdersresearch_0128__mat__mat_cu_hitpPowder · Target Sample · Pristine Frameworkas-synthesised powder dried under vacuum at 65 deg C overnightp008; article page 13242 · Preparation of Cu-HITP powders
Cu-HITP thick-film chemiresistorresearch_0128__mat__mat_cu_hitpElectrode · Target Sample · Pristine Frameworkmethanol suspension drop-coated, activated and aged at 5 V in flowing dry air at 65 deg C for 3 hAl2O3 substrate with precoated Ag-Pd interdigital electrodes · thick film; thickness not reportedp009; article page 13243 · Gas sensor characterization
Cu-THQ nanoplatesresearch_0128__mat__mat_cu_thqPowder · Target Sample · Guest Loadednanoplates collected from upper solution, aged at 60 deg C, filtered, washed and dried under vacuum at 65 deg C overnightp008-p009; article pages 13242-13243 · Preparation of Cu-THQ
Cu-THQ pellet conductivity comparison sampleresearch_0128__mat__mat_cu_thqPellet · Paper Level Unspecified · Guest Loadedcomparative literature value tabulated by this paperp006; article page 13240 · Results and discussion · Table 1
Cu-THQ thick-film chemiresistorresearch_0128__mat__mat_cu_thqElectrode · Target Sample · Guest Loadedmethanol suspension drop-coated, activated and aged at 5 V in flowing dry air at 65 deg C for 3 hAl2O3 substrate with precoated Ag-Pd interdigital electrodes · thick film; thickness not reportedp006; article page 13240 · Results and discussion · Fig. 6b and Table 2