Porous Organic Polymers Containing a Sulfur Skeleton for Visible Light Degradation of Organic Dyes

Abstract

Three novel chemically stable porousorganic polymers (POPs) were synthesized by the hydrothermal method; the POPs contain sulfone bonds (TpSD), no sulfur atoms (TpMD), or thioether bonds (TpTD). The catalytic mechanism of the POP with sulfone bondsw as studied,a nd it was found that the wide visible light absorption range, high specific surfacea rea,a nd the hydrophilicity of the material significantly promoted the catalytic efficiency of TpSD. The presence of O = S = Og ives TpSD ah igher degree of conju-gation than TpMD and TpTD, so TpSD shows the strongest UV/Visible absorption and faster transmission of electrons. The photocatalytic degradation of Rhodamine B( RhB) molecules is approximately 100 %w ith TpSD andi ts pseudo-firstorder rate constant is 0.0770 min À1 ,w hich is the highest amonga ll reported non-metallicp hotocatalysts. Moreover,i t is also the first time that sulfur-containing polymerh ave been used in photocatalytic degradationofd yes.

Preparation of Recyclable and Versatile Porous Poly(aryl thioether)s by Reversible Pd-Catalyzed C–S/C–S Metathesis

“…Considering the flexibility of the C–S–C linkage, the surface area of P1 is comparable to other porous organic materials containing flexible linkers 19 and is more than 6 times higher than the only other porous polymer containing monoaryl thioether linkers in the skeleton (30 m 2 g –1 ) reported up to date. 9 …”

“… 7 While several sulfur-containing porous materials have been reported in the literature, 8 examples of porous materials containing aryl thioether linkages in the backbone are extremely scarce. 9 Swager and co-workers reported the synthesis of thianthrene-based 2D polymers with high surface areas and interesting redox properties by using dynamic S N Ar reactions of thiocatechols and perfluorinated aromatic compounds ( Scheme 1 b). 10 While this synthetic method provides an exciting new approach, it is limited to specific monomers (1,2,4,5-benzenetetrathiol with hexafluorobenzene or octafluoronaphthalene) that can participate in the S N Ar reaction.…”

The Bulk Heterojunction in Organic Photovoltaic, Photodetector, and Photocatalytic Applications

“…Organic semiconductors are also increasingly being employed for photocatalytic applications. Organic photocatalysts have been developed to drive a wide range of redox reactions including synthetic organic transformations, [236][237][238] degradation of organic pollutants, [239,240] and reduction of CO 2 to form value-added chemicals such as CO, CH 4 , and CH 3 OH. [241,242] However, the reaction that has received the most interest is photocatalytic water splitting to generate H 2 and it is primarily in this context that the use of organic bulk heterojunctions in photocatalytic applications will be discussed.…”

Preparation of Recyclable and Versatile Porous Poly-Arylthioethers by Reversible Pd-Catalysed C–S/C–S Metathesis

“…The synthesis of such advanced materials, which should be analogous to PPS in terms of chemical, thermal and mechanical stability, would be a step forward towards the industrial application of porous polymers. Among the extremely scarce examples of porous polyarylthioether-based materials, 20,21 Swager and co-workers reported the synthesis of thianthrene-based 2D polymers with high surface area and interesting redox properties using dynamic SNAr reactions of thiocatechols and perfluorinated aromatic compounds (Scheme 1b). 22 While this synthetic method provides an exciting new approach, it is limited to specific monomers (1,2,4,5-benzenetetrathiol with hexafluorobenzene or octafluoronaphtalene) that can participate in the SNAr reaction.…”