A Substrate‐Selective Nanoreactor Made of Molecularly Imprinted Polymer Containing Catalytic Silver Nanoparticles

Li, Song jun; Gong, Shaoqin

doi:10.1002/adfm.200900428

Cited by 36 publications

(17 citation statements)

References 30 publications

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“…These characteristic peaks can be attributed to the stretching vibration of O–H (N–H), C–H and C=O 12. The fingerprint band may arise from C–N and C–C bonds and their rotation 13. For comparison, we also included the FTIR spectra of two control polymers to Figure 3.…”

Section: Resultsmentioning

confidence: 99%

A Zipper‐Like On/Off‐Switchable Molecularly Imprinted Polymer

Piletsky

et al. 2011

Adv Funct Materials

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A zipper-like on/off-switchable molecularly imprinted polymer is reported. This unique imprinted polymer was composed of template-imprinted polymeric networks that incorporate zipper-like interactions between poly(acrylamide) (PAAm) and poly(2-acrylamide-2-methyl propanesulfonic acid) (PAMPS). This polymer showed marginal recognition ability towards the imprint species under low temperature conditions, due to the interpolymer interaction between PAAm and PAMPS, which inhibited access to the imprinted networks. In contrast, at relatively high temperatures (such as 40 degrees C), the polymer demonstrated significant molecular recognition ability towards the imprint species resulting from the dissociation of the interpolymer complexes of PAAm and PAMPS, which enabled access to the imprint networks. Unlike previously reported PNIPAm-based imprinted polymers, which demonstrate alterable molecular recognition simply because of the thermosensitive hydrophilicity/hydrophobicity of PNIPAm, this polymer employed a zipper-like supramolecular architecture between PAAm and PAMPS, thereby enabling switchable molecular recognition.Funding agencies|European Commission|PIIF-GA-2009-236799|National Science Foundation of China|21073068

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Section: Resultsmentioning

confidence: 99%

A Zipper‐Like On/Off‐Switchable Molecularly Imprinted Polymer

Piletsky

et al. 2011

Adv Funct Materials

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“…Li et al [45] presented a substrate-selective nanoreactor based on the high selectivity and recognition ability of MIPs, and the model reaction studied was the reduction of 4-nitrophenol (NP). The catalyst was obtained by bulk polymerization using vinylpyridine, divinylbenzene and AIBN as functional monomer, cross-linker and initiator respectively, whereas a complex between NP and Ag + was used as template during the imprinting process; the Ag precursor was then reduced and the imprinted NP was washed away.…”

Section: Polymers With Unusual Reactivitymentioning

confidence: 99%

Molecularly Imprinted Polymers for Catalysis and Synthesis

Mirata

Resmini

2015

Advances in Biochemical Engineering/Biotechnology

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The area of biomimetic catalysis based on molecular imprinted polymers has progressed considerably over the last two decades, with research efforts focused on developing catalysts for challenging reactions and on understanding the key factors in template structure and polymer morphology that influence efficiency and selectivity. Recent advances and significant achievements in the field presented in this chapter are organized according to four topics: hydrolytic reactions of challenging substrates, oxidase mimics, metallo-enzyme mimics, and polymers that display unusual reactivity, such as in the case of reactions for which enzymes don't exist, such as Diels-Alder and Kemp elimination. For each theme, significant examples for recent literature are presented and discussed.

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“…11,12 The substrate (4-NP or RB) was added into NaBH 4 aqueous solution with the initial concentration 0.01 mmoL mL À1 (total volume: 3 mL) (NaBH 4 , 20 folds with regard to the substrate). 11,12 The substrate (4-NP or RB) was added into NaBH 4 aqueous solution with the initial concentration 0.01 mmoL mL À1 (total volume: 3 mL) (NaBH 4 , 20 folds with regard to the substrate).…”

Section: Catalysis Testmentioning

confidence: 99%

“…11,12 The objective of this study is to demonstrate that catalytic polymer reactors that have hierarchical catalytic ability can be prepared by using this novel protocol, which opens up the opportunity to develop smart catalysts for controlled chemical processes. This polymer reactor (named "NiPR-HCS") was fabricated with nickel nanoparticles and a polymer composite containing "selfsorting" domains made of two different interactions, that is, weak hydrogen bonds (between PAAm and PTFMA) and relatively stronger polymer complexes (between PVIm and PTFMA) (PAAm: poly(acrylamide); PTFMA: poly(2-triuoromethylacrylic acid); PVIm: poly(1-vinylimidazole)).…”

Section: Introductionmentioning

confidence: 99%

Catalytic polymer reactor with “self-sorting” domains for hierarchical catalysis

Zhu

Shen

et al. 2015

RSC Adv.

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This study is aimed at the present challenge in self-controlled catalysis, about how catalysts can be furnished with hierarchical catalytic ability. This issue was addressed by constructing a unique catalytic polymer reactor containing "self-sorting" switchable domains that acted as a molecular switch for providing sequenced access to the encapsulated metal nanoparticles. This polymer reactor showed poor catalytic reactivity at relatively low temperatures due to the closed access in the switchable domains, which blocked substrate from the catalytic metal nanoparticles. This polymer reactor showed, however, significant catalytic reactivity for small molecules of substrate at modest temperatures, arising from relaxing of the access in the switchable domains, which allowed small molecules to gain entrance into the encapsulated metal nanoparticles. This polymer reactor further showed significant reactivity for large molecules of substrate at relatively high temperatures, in response to the opening at the switchable domains. In this way, this catalytic polymer reactor demonstrated a hierarchical catalytic ability. This suggested protocol opens up the opportunity to develop smart catalysts for controlled chemical processes.

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A Substrate‐Selective Nanoreactor Made of Molecularly Imprinted Polymer Containing Catalytic Silver Nanoparticles

Cited by 36 publications

References 30 publications

A Zipper‐Like On/Off‐Switchable Molecularly Imprinted Polymer

A Zipper‐Like On/Off‐Switchable Molecularly Imprinted Polymer

Molecularly Imprinted Polymers for Catalysis and Synthesis

Catalytic polymer reactor with “self-sorting” domains for hierarchical catalysis

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