Photoactive and metal-free polyamide-based polymers for water and wastewater treatment under visible light irradiation

Continuous-flow synthesis and application of polymer-supported BODIPY Photosensitisers for the generation of singlet oxygen; process optimised by in-line NMR spectroscopy

“…We have chosen to use photosensitised 1 O 2 oxidation of αterpinene to ascaridole to develop and assess the photosensitising capabilities of our materials as the reaction has been well studied within our group and is easily assessed by 1 H-NMR spectroscopy, making it well suited to in-line NMR spectroscopic analysis [10,42,43]. The lifetime of singlet oxygen has a high dependency on solvent environment due to vibronic-energy coupling, ranging from 3.1 μs in H 2 O to >309 ms in perfluorodecane [44].…”

A Metal‐Free, Nonconjugated Polymer for Solar Photocatalysis

“…[12] Despite these desirable properties for photocatalysis, there are still al imited number of organic reactions that use these kinds of metal-free polymers for solar energy conversion.A mong them, carbon nitride based photocatalysts [13] have been proposed for photosynthesis and environmental remediation; poly(p-phenylene)h as been tested in visible-light-driven pinacol coupling of benzaldehyde;p olybenzothiadiazoles have been used to prepare tetrahydroquinoline [14] to produce hydrogen [15] and also for water andw astewater treatment; [16] and poly(diphenylbutadiyne) is efficient in the degradation of pollutants,s uch as phenol or methyl orange. [12] Despite these desirable properties for photocatalysis, there are still al imited number of organic reactions that use these kinds of metal-free polymers for solar energy conversion.A mong them, carbon nitride based photocatalysts [13] have been proposed for photosynthesis and environmental remediation; poly(p-phenylene)h as been tested in visible-light-driven pinacol coupling of benzaldehyde;p olybenzothiadiazoles have been used to prepare tetrahydroquinoline [14] to produce hydrogen [15] and also for water andw astewater treatment; [16] and poly(diphenylbutadiyne) is efficient in the degradation of pollutants,s uch as phenol or methyl orange.…”

“…[12] Despite these desirable properties for photocatalysis, there are still al imited number of organic reactions that use these kinds of metal-free polymers for solar energy conversion.A mong them, carbon nitride based photocatalysts [13] have been proposed for photosynthesis and environmental remediation; poly(p-phenylene)h as been tested in visible-light-driven pinacol coupling of benzaldehyde;p olybenzothiadiazoles have been used to prepare tetrahydroquinoline [14] to produce hydrogen [15] and also for water andw astewater treatment; [16] and poly(diphenylbutadiyne) is efficient in the degradation of pollutants,s uch as phenol or methyl orange. [16,18] We demonstrateh erein that ac opolymer consisting of anthraquinone units linked through terephthalate units, poly[1,4diamine-9,10-dioxoanthracene-alt-(benzene-1,4-dioica cid)] (COP), which can be easily synthesized and coated on ag lass surface, can act as an efficient solar photocatalyst for dichlorophenol degradation.I np articular,w eh ave used supported COP for the photodegradationo f2 ,5-dichlorophenol (2,5-DCP) in water and demonstrated that COP activity was exclusively due to visible-light absorption. [16,18] We demonstrateh erein that ac opolymer consisting of anthraquinone units linked through terephthalate units, poly[1,4diamine-9,10-dioxoanthracene-alt-(benzene-1,4-dioica cid)] (COP), which can be easily synthesized and coated on ag lass surface, can act as an efficient solar photocatalyst for dichlorophenol degradation.I np articular,w eh ave used supported COP for the photodegradationo f2 ,5-dichlorophenol (2,5-DCP) in water and demonstrated that COP activity was exclusively due to visible-light absorption.…”

<strong>Exploring BODIPY <em>meso</em>-enamines as singlet-oxygen photosensitizers for PDT</strong>

“…Production of singlet oxygen ( 1 O2) through photosensitization involves three components: a photosensitizer (PS), a light source and oxygen. The development of 1 O2 photosensitizing agents is an active research field since 1 O2 is an useful reactive specie for numerous applications such as oxidation of fine chemicals in organic solvents [1], wastewater treatment [2] or cancer treatments by photodynamic therapy (PDT) [3]. Boron dipyrromethene (BODIPY) dyes have emerged as relevant fluorophores and 1 O2 photosensitizers [3b,4].…”