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

5 measurement groups · 19 results

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

as-synthesized PyPor-COF powder · Powder

COF powders and trapping agents in EPR tube; xenon lamp excitation; compared dark/light and precursor/commercial photosensitiser controls.

Atmosphere: ambient
Context: pristine COF with controls
Measurement source: 21571 · Results and Discussion · Figure 4a,c; Figures S6-S12

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
DMPO radical signal selectivity	nearly no OH or O2- signal under light irradiation	—	—	Text Qualitative	21571 · Results and Discussion · Figure S9
singlet oxygen EPR signalMarked as a best value within this paper	obvious 1O2 signal after light irradiation; stronger than p-Por-CHO and rhodamine B; comparable with methylene blue and Ce6	—	—	Text Qualitative	21571-21572 · Results and Discussion · Figure 4a,c

as-synthesized PyPor-COF powder · Powder

Comparison of PyPor-COF with PyTO, p-Por-CHO, and ammonium acetate reactants.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
C=N stretching vibration	1601 cm-1	—	—	Text Exact Reported	21566 · Results and Discussion · Figure 1a
N-H stretching vibration 1	3348 cm-1	—	—	Text Exact Reported	21566 · Results and Discussion · Figure 1a
N-H stretching vibration 2	3446 cm-1	—	—	Text Exact Reported	21566 · Results and Discussion · Figure 1a

as-synthesized PyPor-COF powder · Powder

PyPor-COF compared with model compound.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
13C NMR imidazole carbon signal	126 ppm	—	—	Text Exact Reported	21566 · Results and Discussion · Figure 1b
13C NMR imidazole carbon signal	142 ppm	—	—	Text Exact Reported	21566 · Results and Discussion · Figure 1b
13C NMR imidazole carbon signal	161 ppm	—	—	Text Exact Reported	21566 · Results and Discussion · Figure 1b

as-synthesized PyPor-COF powder · Powder

Pump-probe system; pump pulses at 400 nm; probe continuum 350-650 nm; delay region 100 fs to 7 ns.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
TA maintained signal until delay-region end	t4 = 7.37 ns	—	—	Text Exact Reported	21572 · Results and Discussion · Figure 4e
initial TA signal wavelength	660 nm	—	—	Text Exact Reported	21572 · Results and Discussion · Figure 4d,e
initial TA signal wavelength	750 nm	—	—	Text Exact Reported	21572 · Results and Discussion · Figure 4d,e
TA component t1	t1 = 1.7 ps	—	—	Text Exact Reported	21572 · Results and Discussion · Figure 4e
TA component t2	t2 = 159 ps	—	—	Text Exact Reported	21572 · Results and Discussion · Figure 4e
TA slow decay t3	t3 = 2.52 ns	—	—	Text Exact Reported	21572 · Results and Discussion · Figure 4e

as-synthesized PyPor-COF powder · Powder

PyTO, p-Por-CHO and PyPor-COF compared as powders/solid-state samples.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
optical bandgap of p-Por-CHO control	1.78 eV	—	—	Figure Axis Rounded Reported	21569 · Figure · Figure 3b
optical bandgap of PyPor-COFMarked as a best value within this paper	1.75 eV	—	—	Text Exact Reported	21570 · Results and Discussion · Figure 3b
optical bandgap of PyTO control	2.27 eV	—	—	Figure Axis Rounded Reported	21569 · Figure · Figure 3b
Q-band absorption range	four distinct absorption peaks in the range of 500-700 nm	—	—	Text Range	21570 · Results and Discussion · Figure 3a
Soret-band absorption	strong absorption peak around 400 nm	—	—	Text Approximate	21570 · Results and Discussion · Figure 3a