UV‐Triggered Surface‐Initiated Polymerization from Colorless Green Tea Polyphenol‐Coated Surfaces

Bai, Guoqiang; Ma, Shuanhong; Qie, Runtian; Liu, Zhiqing; Shi, Yulin; Li, Cuihua; Wang, Rongjie; Guo, Xuhong; Zhou, Feng; Jia, Xin

doi:10.1002/marc.201600065

Cited by 29 publications

(18 citation statements)

References 33 publications

(17 reference statements)

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“…Therefore, by using lithography masks, PDA can be selectively deposited under UV light to pattern the surface. [35][36][37] Such kind of patterned surface is promising to be applied in electrics, bio-chips and sensors. [38] The UV irradiation can also trigger the polymerization and deposition of phenolic compounds in plants on various substrates.…”

Section: Recent Advances In Mussel-inspired Surface Chemistrymentioning

confidence: 99%

“…After that, they found other polyphenols, such as green tea polyphenol, could also generate radicals and initiate the polymerization under UV irradiation on material surfaces. [35] This strategy has been employed in fabricating stimuli-responsive hollow spheres for controlled pesticide release by Sheng et al [65] As a competitive strategy to graft functional polymers onto surfaces, the PDA-initiated photo-grafting is a promising approach to be applied in membrane surface modification in future research. This article is protected by copyright.…”

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confidence: 99%

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Dopamine: Just the Right Medicine for Membranes

Yang

Waldman

et al. 2018

Adv Funct Materials

241

162

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Mussel-inspired chemistry has attracted widespread interest in membrane science and technology. Demonstrating the rapid growth of this field over the past several years, substantial progress has been achieved in both mussel-inspired chemistry and membrane surface engineering based on musselinspired coatings. At this stage, it is valuable to summarize the most recent and distinctive developments, as well as to frame the challenges and opportunities remaining in this field. In this review, we present recent advances in rapid and controllable deposition of mussel-inspired coatings, dopamine-assisted co-deposition technology and photo-initiated grafting directly on mussel-inspired coatings. Some of these technologies have not yet been employed directly in membrane science. Beyond discussing advances in conventional membrane processes, we discuss emerging applications of mussel-inspired coatings in membranes, including as a skin layer in nanofiltration, interlayer in metalorganic framework based membranes, hydrophilic layer in Janus membranes and protective layer in catalytic membranes. Finally, we raise some critical unsolved challenges in this field and propose some potential pathways to address them.

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Section: Recent Advances In Mussel-inspired Surface Chemistrymentioning

confidence: 99%

mentioning

confidence: 99%

Dopamine: Just the Right Medicine for Membranes

Yang

Waldman

et al. 2018

Adv Funct Materials

241

162

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“…Adding GTPs to the surface of silica containing a large number of phenolic hydroxyl groups could obtain a new type of biomass anti-aging filler, which can enhance and optimize the anti-aging properties of rubber composites, and was beneficial to the development of "green rubber" industry (Xiaohui et al, 2020). Bai et al (2016) successfully built the light graft polymer brushes by the colorless surface coating constructed with GTPs as the base material, without covering the original color of the substrate, and the GTPs layer had good cutting properties, which could be widely used in the field of surface modification. In addition, a relatively low dose of polyphenols (0.01%) could reduce the particle size of proteins and change the surface characteristics of droplets caused by protein-polyphenols interaction, thus improving the physical stability of emulsions.…”

Section: Application Of Tps In Other Fieldsmentioning

confidence: 99%

Molecular mechanisms and applications of tea polyphenols: A narrative review

et al. 2021

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Tea not only has a beloved taste, but also has rich biological activity, so it has become one of the best-selling beverages in the world. In the existing studies on tea, it is found that TPs account for highest proportion, which is the main bioactive ingredient. Generally, green tea polyphenols (GTP S ) are the main research materials, which are high in catechins. GTP S have significant health benefits (Xing et al., 2019) and are considered to be safe by the US Food and Drug Administration (Chang et al., 2019). Since the 1950s, scholars have begun to study the biological activity of TPs and their mechanism of action, and found that TPs are not only beneficial to human health, but also have an impact on food, medical, chemical and other fields.According to the research on the components of TPs (Khan & Mukhtar, 2018;Li et al., 2019), it is found that TPs contain catechins, flavonoids, anthocyanins, phenolic acids and other substances, among which catechins account for the largest proportion, up to 60%-80%. Catechin is divided into epicatechin (EC), epicatechin gallate (ECG), epigallocatechin (EGC) and epigallocatechin gallate (EGCG; the molecular structure is shown in the Figure 1). The content relationship is EGCG > EGC > ECG > EC, of which EGCG accounts for about 70%. Therefore, EGCG is the main catechin and the research on the biological activity of TPs mainly starts from EGCG.The research conclude that TPs can exert a variety of biological activities such as anti-oxidation, anti-tumor, anti-inflammation,

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“…Indeed, the UVirradiated generates on the TP surface, surface-bound radicals which can be used for a photoinduced polymerization. When compared with polydopaminecoated surfaces, green tea polyphenol layers were typically colorless instead of dark-black which can be a plus in some applications [62].…”

Section: Self-initiating Photograftingmentioning

confidence: 99%

Light induced grafting-from strategies as powerfull tool for surface modification

Sangermano¹,

Razza²

2019

Express Polym. Lett.

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Chemical-induced grafting processes can be performed either by a grafting-to method, where preformed polymer chains are grafted on the surface previously activated, or alternatively, the polymer chains can be grown from the surface via a grafting-from method. The last one can be considered a bottom-up approach in which polymers are generated directly on the surface starting from their precursors. As a preliminary process, the substrate is functionalized with specific groups that can initiate a polymerization reaction. Although surface-initiated polymerizations are conventionally induced by a thermal initiator or directly by radicals formed by high energy treatment of the surface, they can be triggered by light. In this regard, light-induced grafting reactions have recently found increasing interest. With this review, by placing emphasis on the initiating system, we aim to show the significant feasibility of photografting-from method to properly functionalize any type of surface.

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UV‐Triggered Surface‐Initiated Polymerization from Colorless Green Tea Polyphenol‐Coated Surfaces

Cited by 29 publications

References 33 publications

Dopamine: Just the Right Medicine for Membranes

Dopamine: Just the Right Medicine for Membranes

Molecular mechanisms and applications of tea polyphenols: A narrative review

Light induced grafting-from strategies as powerfull tool for surface modification

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