31473-75-3

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InChI:InChI=1/C20H10S/c1-3-11-7-9-15-19-17(11)13(5-1)14-6-2-4-12-8-10-16(21-15)20(19)18(12)14/h1-10H

Upstream product

• 35337-20-3 1-nitroperilene 
• 198-55-0 PERYLENE 

Relevant academic research and scientific papers

Bandgap engineering of novel peryleno[1,12-bcd]thiophene sulfone-based conjugated co-polymers for significantly enhanced hydrogen evolution without co-catalyst

Low-cost conjugated polymers as efficient photocatalytic semiconductors for hydrogen evolution have attracted worldwide attention in recent years. However, the narrow visible-light absorption spectrum, fast electron-hole recombination and expensive co-catalysts have limited their large-scale practical application in water splitting. In this work, we first developed the new peryleno[1,12-bcd]thiophene sulfone unit with extended π-conjugation, then prepared a series of sulfone-based hybrid conjugated co-polymers (PS-1-PS-8) by statistically adjusting the molar ratio of the monomer. The experimental results and DFT calculations indicated that with the gradual increase in the peryleno[1,12-bcd]thiophene sulfone contents in the polymer backbone, the optical bandgaps of co-polymers could be fine-tuned from 2.72 eV to 1.58 eV, and showed a red-shift in the visible-light region for improving the light-capturing capability. Besides, the internal charge separation capability along the co-polymers (PS-1-PS-8) was promoted. However, the driving force for proton reduction and the dispersibility of these co-polymers in aqueous solution were gradually decreased. When the molar ratio of dibenzo[b,d]thiophene sulfone to peryleno[1,12-bcd]thiophene sulfone was 19 : 1, the polymerPS-5achieved the highest hydrogen evolution rate (HER), so far, of 7.5 mmol h?1g?1without co-catalyst under visible light, with an apparent quantum yield (AQY) of 15.3% at 420 nm. The HER performance was almost 3 times higher than that of the typical dibenzo[b,d]thiophene sulfone-based conjugated polymerP7. This work provides a strategy for maximizing the HERs of organic semiconductors by balancing the bandgap, charge recombination, driving force and wettability.

VISIBLE LIGHT INDUCED PHOTOGENERATION OF GROUND STATE ATOMIC OXYGEN

The present invention generally relates to various polycyclic aromatic selenoxide compounds, methods for preparing these compounds, and methods of us these and other compounds to generate ground state atomic oxygen.

Photodeoxygenation of phenanthro[4,5-bcd]thiophene S-oxide, triphenyleno[1,12-bcd]thiophene S-oxide and perylo[1,12-bcd]thiophene S-oxide

Sulfoxides, upon irradiation with ultraviolet (UV) light undergo α-cleavage, hydrogen abstraction, photodeoxygenation, bimolecular photoreduction, and stereo-mutation. The UV irradiation of dibenzothiophene S-oxide (DBTO) yields dibenzothiophene (DBT) as a major product along with ground-state atomic oxygen [O(3P)]. This is a common method for generating O(3P) in solution. The low quantum yield of photodeoxygenation and the requirement of UVA light are drawbacks of using this method. The sulfoxides benzo[b]naphtho-[1,2,d]thiophene S-oxide, benzo[b]naphtho [2,1,d]thiophene S-oxide, benzo[b] phenanthro[9,10-d]thiophene S-oxide, dinaphtho- [2,1-b:1’,2’-d]thiophene S-oxide, and dinaphtho[1,2-b:2’,1’-d]thiophene S-oxide have shown to deoxygenate up to three times faster than DBTO upon UVA irradiation; however, the photodeoxygenation of these sulfoxides does not appear to be limited to the production of O(3P). In this work, phenanthro[4,5-bcd]thiophene S-oxide, triphenyleno[1,12-bcd]thiophene-S-oxide, and perylo[1,12-bcd]thiophene-S-oxide were synthesized and their photodeoxygenation was studied. Phenanthro[4,5-bcd]thiophene-S-oxide, triphenyleno[1,12-bcd]thiophene-S-oxide, and perylo[1,12-bcd]thiophene-S-oxide deoxygenated upon UVA irradiation. However, the common intermediate experiments did not conclusively identify the photodeoxygenation mechanism of these sulfoxides.

Heteroatom-annulated perylenes: Practical synthesis, photophysical properties, and solid-state packing arrangement

(Chemical Equation Presented) A practical strategy for the preparation of a series of heterocyclic annulated perylenes in good yields is presented. UV-vis absorption spectra indicate hypsochromic shift of the absorption maxima relative to the corresponding parent perylene. Single-crystal X-ray diffraction analysis reveals that they all adopt planar conformation, but the solid-state packing arrangements are significantly altered by annulation of various heterocycles.

Application of flash vacuum pyrolysis to the synthesis of sulfur- containing heteroaromatic systems

The FVP method of ethynyl and chlorovinyl materials is applied to the ready formation of sulfur-containing fused heteroaromatic systems. The pyrolysis of the chlorovinyl materials is assumed to involve a mechanism different from that of the ethynyl materials.