Applications of the Tachiya Fluorescence Quenching Model To Describe the Kinetics of Solid-State Polymer Photodegradation

Zemke, Jennifer M.; Daglen, Bevin C.; Tachiya, M.; Tyler, David R.

doi:10.1021/ma2013578

Cited by 5 publications

(6 citation statements)

References 19 publications

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“…The second assumption considers that when a micelle contains n solubilized molecules, the rate constant for exit of a solubilized molecule from the micelle is n times as fast as when it contains one solubilized molecule. In recent past the model has been successfully used to understand the drug binding to polymer degradation [37], nanoparticle quenching [38] etc. The above model is well relevant in our experimental framework.…”

Section: Tachiya Kinetic Modelmentioning

confidence: 99%

Ultrafast interfacial solvation dynamics in specific protein DNA recognition

et al. 2013

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Section: Tachiya Kinetic Modelmentioning

confidence: 99%

Ultrafast interfacial solvation dynamics in specific protein DNA recognition

et al. 2013

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“…Likewise, El-Hiti et al [ 147 ] suggest the addition of UV absorbers such as polyphosphates, organometallic complexes and Schiff bases as plastic photostabilizers to provide a mechanism for modifying polymeric materials’ resistance to aging. Furthermore, to circumvent the photodegradation of polymeric materials’ mechanistic complexities, Zemke et al [ 148 ], Auras et al [ 149 ], Wallnöfer-Ogris et al [ 150 ], Karlsson and Albertsson [ 151 ], He et al [ 152 ], Ray and Cooney [ 153 ] and La Mantia et al [ 154 ] have suggested the use polymers that possess metal–metal bonds integrated into their backbone. Irradiating these materials breaks the metal–metal bonds, followed by their radicals being trapped by a suitable radical trap like molecular oxygen or the bond between carbon and chlorine molecules [ 148 ].…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, to circumvent the photodegradation of polymeric materials’ mechanistic complexities, Zemke et al [ 148 ], Auras et al [ 149 ], Wallnöfer-Ogris et al [ 150 ], Karlsson and Albertsson [ 151 ], He et al [ 152 ], Ray and Cooney [ 153 ] and La Mantia et al [ 154 ] have suggested the use polymers that possess metal–metal bonds integrated into their backbone. Irradiating these materials breaks the metal–metal bonds, followed by their radicals being trapped by a suitable radical trap like molecular oxygen or the bond between carbon and chlorine molecules [ 148 ]. This phenomenon leads to the creation of a net backbone cleavage, which deters photodegradation [ 148 ].…”

Section: Resultsmentioning

confidence: 99%

“…Irradiating these materials breaks the metal–metal bonds, followed by their radicals being trapped by a suitable radical trap like molecular oxygen or the bond between carbon and chlorine molecules [ 148 ]. This phenomenon leads to the creation of a net backbone cleavage, which deters photodegradation [ 148 ]. In this regard, there are different methods through which plastics used in agricultural applications can be made to last longer.…”

Section: Resultsmentioning

confidence: 99%

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The Aging of Polymers under Electromagnetic Radiation

Maraveas,

Kyrtopoulos,

Arvanitis

et al. 2024

Polymers

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Polymeric materials degrade as they react with environmental conditions such as temperature, light, and humidity. Electromagnetic radiation from the Sun’s ultraviolet rays weakens the mechanical properties of polymers, causing them to degrade. This study examined the phenomenon of polymer aging due to exposure to ultraviolet radiation. The study examined three specific objectives, including the key theories explaining ultraviolet (UV) radiation’s impact on polymer decomposition, the underlying testing procedures for determining the aging properties of polymeric materials, and appraising the current technical methods for enhancing the UV resistance of polymers. The study utilized a literature review methodology to understand the aging effect of electromagnetic radiation on polymers. Thus, the study concluded that using additives and UV absorbers on polymers and polymer composites can elongate the lifespan of polymers by shielding them from the aging effects of UV radiation. The findings from the study suggest that thermal conditions contribute to polymer degradation by breaking down their physical and chemical bonds. Thermal oxidative environments accelerate aging due to the presence of UV radiation and temperatures that foster a quicker degradation of plastics.

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“…It has been documented that polymer research has seen an exponential increase in light of the wide range of applications that polymeric materials afford . Synthetic polymers can be linear, cross‐linked, branched, and dendritic structures .…”

Section: Introductionmentioning

confidence: 99%

Advances in Light‐Emitting Dendrimers

Abd‐El‐Aziz

Abdelghani

Wagner

et al. 2018

Macromol. Rapid Commun.

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with increasing generation), or even at the branching sites. Such dendrimeric structures with incorporated chromophores provide a mimic of the photosynthetic light-harvesting system, in which antenna chromophores surround the inner reaction center. [35][36][37][38] Each photoactive group within a dendrimer can show quite different emission and energy-transfer properties compared with those of the same chromophore within a small molecule (or as a separate free molecule itself), as a result of the close spatial proximity to neighboring moieties. For instance, in well-designed dendrimers, photoexcited chromophores can undergo energy transfer to other units, funneling the energy through the antenna framework toward the core, which can serve as the basis for solar energy conversion, [39,40] luminescent sensors, [41,42] and photoinduced electron transfer (PET) between units of the dendrimers. [43][44][45] This process can also result in the useful formation of excimer and exciplex species within the dendrimer, which will exhibit vastly different emission wavelengths. [46][47][48] Furthermore, dendrimers which contain metal ions have been generated to combine the redox properties of metals with other dendrimeric properties. [27,[49][50][51][52][53][54] In this review we will focus on light-harvesting dendrimeric materials with many illustrative examples. DendrimersThe design of dendrimers with various chromophores has attracted significant attention in light of the dual effect of the luminescence of the chromophores and the morphology of the synthesized dendrimers. Recent developments in this field stem from their wide potential applications, including organic light-emitting diodes, photonic switches and upconversion lasers, as well as sensors and electronic devices. The focus of this comprehensive review is on the design and properties of various classes of lightharvesting dendrimeric materials.

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Applications of the Tachiya Fluorescence Quenching Model To Describe the Kinetics of Solid-State Polymer Photodegradation

Cited by 5 publications

References 19 publications

Ultrafast interfacial solvation dynamics in specific protein DNA recognition

Ultrafast interfacial solvation dynamics in specific protein DNA recognition

The Aging of Polymers under Electromagnetic Radiation

Advances in Light‐Emitting Dendrimers

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