Abstract Only a small proportion of global plastic waste is recycled, which most mechanically recycled into lower quality materials. The alternative, chemical recycling, enables renewed production pristine materials, but generally comes at high energy cost, particularly for processes like pyrolysis. This review focuses on light-driven approaches chemically recycling and upcycling waste, with emphasis reduced consumption selective transformations not achievable heat-driven methods. We focus...

Molecular photoswitches capable of generating precise pH changes will allow pH-dependent processes to be controlled remotely and noninvasively with light. We introduce a series new merocyanine photoswitches, which deliver reversible bulk up 3.2 units (pH 6.5 3.3) upon irradiation 450 nm light, displaying tunable predictable timescales for thermal recovery. present models show that the key parameters optimizing are measurable: solubility photoswitch, acidity form, equilibrium position between...

The application of merocyanine photoacids has previously been largely limited to neutral and acidic pH values. Here we introduce a new photoacid with superior switching qualities. By increasing the pKa in dark (pKdarka) solubility increased reversible visible light induced jump 3.5 units. Moreover, it is first demonstration able generate significant drop from basic (pH 8.3) an 5.2) environment.

Here we regulate the formation of dissipative assemblies built from DNA using a merocyanine photoacid that responds to visible light. The operation our system and relative distribution species within it are controlled by irradiation time, initial pH value, concentration small-molecule binder inhibits reaction cycle. This approach is modular, does not require modification, can be used for several sequences lengths. Our design allows waste-free control nanotechnology, toward generation...

Abstract Hierarchical DNA nanostructures offer programmable functions at scale, but making these structures dynamic, while keeping individual components intact, is challenging. Here we show that the A‐motif—protonated, self‐complementary poly(adenine) sequences—can propagate origami into one‐dimensional, micron‐length fibrils. When coupled to a small molecule pH regulator, visible light can activate hierarchical assembly of our dissipative This system recyclable and does not require...

Several chiral sulfoxides with a lactam hydrogen-bonding site were prepared and their photochemical behavior was studied in the presence of xanthone thioxanthone sensitizers. While acyclic showed only decomposition, benzothiazinone-1-oxides stereogenic sulfur atom underwent stereomutation upon irradiation at λ = 366 nm catalytic quantities sensitizer. A 1,5,7-trimethyl-3-azabicyclo-[3.3.1]nonan-2-one backbone employed (5 mol%) to achieve deracemization reaction racemic acetonitrile solution....

Light can be used to design stimuli-responsive systems. We induce transient changes in the assembly of a low molecular weight gelator solution using merocyanine photoacid. Through our approach, reversible viscosity achieved via irradiation, delivering systems where flow controlled non-invasively on demand.

Abstract The escalating demand for plastics has resulted in a surge of plastic waste worldwide, posing monumental environmental challenge. To address this issue, versatile photo‐oxidative degradation method applicable to seven distinct polymer families is proposed, comprising poly(isobutyl vinyl ether) (PIBVE), poly(2,3‐dihydrofuran) (PDHF), poly(vinyl acetate) (PVAc), poly( n ‐butyl acrylate) (PBA), poly(methyl (PMA), chloride) (PVC), poly(dimethyl acrylamide) (PDMA), poly(ethylene oxide)...

Ellipsoids formed from a novel merocyanine-based amphiphile can be disassembled by irradiation of visible light. The thermal recovery the self-assembly is significantly slower than that amphiphile. delay between two processes tuned minutes and hours addition differently charged co-surfactants.

Only a small proportion of global plastic waste is recycled, which most mechanically recycled into lower quality materials. The alternative, chemical recycling, enables renewed production pristine materials, but generally comes at high energy cost, particularly for processes like pyrolysis. This review focuses on light-driven approaches chemically recycling and upcycling waste, with emphasis reduced consumption selective transformations not achievable heat-driven methods. We focus...

Abstract Hierarchical DNA nanostructures offer programmable functions at scale, but making these structures dynamic, while keeping individual components intact, is challenging. Here we show that the A‐motif—protonated, self‐complementary poly(adenine) sequences—can propagate origami into one‐dimensional, micron‐length fibrils. When coupled to a small molecule pH regulator, visible light can activate hierarchical assembly of our dissipative This system recyclable and does not require...

The application of merocyanine photoacids has been previously largely limited to neutral and acidic pH values. Here we introduce a new photoacid with superior switching qualities. By increasing the pKa in dark (pKadark) solubility increased reversible visible light induced jump 3.5 units. Moreover, it is first demonstration able generate significant drop from basic (pH 8.3) an 5.2) environment.

Light is an ideal stimulus to operate systems with transient, complex functions. Here we activate a merocyanine photoacid visible light form dissipative assemblies built from DNA. This approach does not require DNA sequence modification and can be used for variety of i-motif/G-quadruplex-forming oligomers different sequences lengths. Visible light, initial pH values, small molecule binder jointly control the kinetics system relative distribution species within it. Our modular allows...

Here we regulate the formation of dissipative assemblies built from DNA using a merocyanine photoacid that responds to visible light. The operation our system, and relative distribution species within it, are controlled by irradiation time, initial pH value, concentration small molecule binder inhibits reaction cycle. This approach is modular, does not require modification, can be used for several sequences lengths. Our system design allows waste-free control nanotechnology, towards...

Molecular photoswitches capable of generating pH changes with precision will allow pH-dependent processes to be controlled remotely and non-invasively light. We introduce a series new spiropyran photoswitches, delivering reversible bulk up 3.2 units (pH 6.5 3.3) upon irradiation 450 nm light, displaying tunable predictable timescales for thermal recovery. present models show that the key parameters optimizing are measurable: solubility photoswitch, acidity merocyanine form influenced by...

Molecular photoswitches capable of generating pH changes with precision will allow pH-dependent processes to be controlled remotely and non-invasively light. We introduce a series new spiropyran photoswitches, delivering reversible bulk up 3.2 units (pH 6.5 3.3) upon irradiation 450 nm light, displaying tunable predictable timescales for thermal recovery. present models show that the key parameters optimizing are measurable: solubility photoswitch, acidity merocyanine form influenced by...

Molecular photoswitches capable of generating pH changes with precision will allow pH-dependent processes to be controlled remotely and non-invasively light. We introduce a series new spiropyran photoswitches, delivering reversible bulk up 3.2 units (pH 6.5 3.3) upon irradiation 450 nm light, displaying tunable predictable timescales for thermal recovery. present models show that the key parameters optimizing are measurable: solubility photoswitch, acidity merocyanine form influenced by...

Molecular photoswitches capable of generating pH changes with precision will allow pH-dependent processes to be controlled remotely and non-invasively light. We introduce a series new spiropyran photoswitches, delivering reversible bulk up 3.2 units (pH 6.5 3.3) upon irradiation 450 nm light, displaying tunable predictable timescales for thermal recovery. present models show that the key parameters optimizing are measurable: solubility photoswitch, acidity merocyanine form influenced by...