Primary studyCore evidenceSynthesis Structure

Highly Effective Generation of Singlet Oxygen by an Imidazole-Linked Robust Photosensitizing Covalent Organic Framework

Luan T.-X., Du L., Wang J.-R. et al. · ACS Nano · 2022 · 21565-21575

5materials
7samples
4synthesis routes
14measurements
54results
7claims and caveats

Evidence map

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Author interpretations and caveats

Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.

Application RelevanceSupport assessment: High

PC@PyPor-COF has photodynamic anticancer activity under 660 nm irradiation by triggering singlet oxygen generation.

Caveat: In vitro 4T1-cell result only; authors state future in vivo studies are needed.

21572 · Results and Discussion · Figure 5e; Figures S17-S18 · Linked to 4 structured results

Application RelevanceSupport assessment: High

PyPor-COF is an effective Type II photosensitiser for singlet oxygen generation under light irradiation.

Caveat: EPR comparisons are qualitative from plotted signal intensities rather than tabulated quantum yields.

21572 · Results and Discussion · Figure 4 · Linked to 6 structured results

Composite RoleSupport assessment: Medium

Soybean phosphate/cholesterol composite formation improves PyPor-COF dispersibility for physiological tests.

Caveat: Dispersibility is supported by DLS/photographs; exact formulation optimisation metrics are mostly figure labels rather than tabulated data.

21572 · Results and Discussion · Figures 5b and S14-S16 · Linked to 6 structured results

Phase AssignmentSupport assessment: High

PyPor-COF is assigned as a 2D crystalline framework with one-dimensional microporous channels.

Caveat: Structure is powder-refined and simulated; no CIF or single-crystal diffraction was supplied.

21569 · Results and Discussion · Figure 2; Figures S2-S4 · Linked to 7 structured results

Phase AssignmentSupport assessment: High

PyPor-COF was successfully formed as an imidazole-linked porphyrin-pyrene COF.

Caveat: Assignment is based on spectroscopy and model-compound comparison, not single-crystal structure.

21566 · Results and Discussion · Figure 1a,b · Linked to 6 structured results

Structure Property LinkSupport assessment: High

PyPor-COF has robust thermal and chemical stability.

Caveat: Chemical stability was assessed by retained PXRD peaks after solution exposure; quantitative crystallinity retention was not reported.

21570 · Results and Discussion · Figure 2d,e · Linked to 3 structured results

Transport MechanismSupport assessment: Medium

PyPor-COF behaves as an optically active n-type semiconductor with photoresponsive current generation.

Caveat: Evidence is optical bandgap, Mott-Schottky, and transient photocurrent; no dark electrical conductivity or mobility value is reported.

21570 · Results and Discussion · Figure 3 · Linked to 6 structured results

Material identities

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

MaterialCompositionStructure contextSource
model compoundNot specifiednone · PyTO, benzaldehyde, and ammonium acetate reaction product0D · Model Systemsmall-molecule/model imidazole product for NMR comparisonS5 · Experimental section
5,10,15,20-tetrakis(4-benzaldehyde)porphyrin (p-Por-CHO)Not specifiednone · metal-free porphyrin aldehyde precursor0D · Model Systemporphyrin aldehyde precursor/control21566 · Results and Discussion
PC@PyPor-COFNot specifiednone · PyPor-COF mixed with soybean phosphate and cholesterolunknown · Compositeliposome/dispersibility composite of PyPor-COF for physiological tests21572 · Results and Discussion · Figure 5b, Figures S14-S16
PyPor-COFNot specifiednone; metal-free covalent organic framework · PyTO, 5,10,15,20-tetrakis(4-benzaldehyde)porphyrin (p-Por-CHO), and ammonium acetate-derived imidazole linkages2D · Pristine2D imidazole-linked porphyrin-pyrene COF; AA stacking model; P4/m space group; one-dimensional porous channels21566 · Results and Discussion · Scheme 1d
pyrene-4,5,9,10-tetraone (PyTO)Not specifiednone · pyrene tetraone precursor0D · Model Systemorganic diketone precursor/control21566 · Results and Discussion

Sample register

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

Show 7 sample records
SampleForm and roleProcessing and geometrySource
model compoundresearch_0766__mat__mat_model_compoundModel · Model System · Modeldark black powder, Soxhlet extracted and dried under vacuum at 120 deg C overnightS5 · Synthesis of Model Compound
p-Por-CHO precursor/controlresearch_0766__mat__mat_p_por_choPowder · Pristine Control · Modelcommercial or prepared precursor; synthesis not reported in this paper21566 · Results and Discussion
PC@PyPor-COF compositeresearch_0766__mat__mat_pc_pypor_cofPowder · Composite Sample · CompositePyPor-COF mixed with cholesterol and soybean phosphate, stirred in water, centrifuged, washed, driedS5-S6 · Praparation of PC@PyPor-COF
activated PyPor-COFresearch_0766__mat__mat_pypor_cofPowder · Target Sample · Pristine Frameworkactivated/degassed before porosity and stability measurementsS2 · General information
as-synthesized PyPor-COF powderresearch_0766__mat__mat_pypor_cofPowder · Target Sample · Pristine Frameworkwashed, Soxhlet extracted, dried under vacuum at 120 deg C overnight21573 · Experimental Section
sonicated PyPor-COF nanoparticlesresearch_0766__mat__mat_pypor_cofNanosheet · Target Sample · Pristine Frameworkultrasonic exfoliation to reduce aggregate size for cell experiments21571 · Results and Discussion · Figure 5a
PyTO precursor/controlresearch_0766__mat__mat_pytoPowder · Pristine Control · Modelgolden powder after column chromatographyS4 · Synthesis of pyrene-4,5,9,10-tetraone (PyTO) · Scheme S1