Template‐Assisted Cross Olefin Metathesis

Yang, Xuefei; Gong, Bing

doi:10.1002/anie.200461777

Cited by 51 publications

(27 citation statements)

References 69 publications

(16 reference statements)

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“…The resulting lone pair electrons on each nitrogen atom facilitated urea molecules to bind. Meanwhile, the benzene ring units of PANI were brought into close proximity upon the cellulose backbone orientation, and the greatly increased effective molarity promoted the chemical reaction among molecules [32], forming intramolecular C-C bonds among the adjacent benzene units of PANI chains. With the synergic effect of backbone orientation and the sodium hydroxide/urea solution treatment, nitrogen atoms initially existed between the benzene ring units of PANI were eliminated, leaving regularly oriented carbon frames.…”

Section: Resultsmentioning

confidence: 99%

Nanographite sheets derived from polyaniline nanocoating of cellulose nanofibers

Huang

2013

Materials Research Bulletin

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Section: Resultsmentioning

confidence: 99%

Nanographite sheets derived from polyaniline nanocoating of cellulose nanofibers

Huang

2013

Materials Research Bulletin

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“…Covalent capture of supramolecular architectures is a general strategy to stabilize functional systems. 11,[26][27][28][29][30][31][32][33][34][35] The general idea is to combine advantages of supramolecular synthesis such as precision, molecular recognition, self-organization and self-repair with the stability of polymers. This idea is not new.…”

Section: Introductionmentioning

confidence: 99%

“…26 Many reactions have been used successfully to stabilize functional systems. Examples include olefin metathesis, 11,[26][27][28][29][30][31][32][33][34][35][36][37][38][39] diacetylene polymerization, disulfide exchange, reductive amination, conjugate addition, and so on. 26 To explore covalent capture of zipper architectures, [13][14][15][16][17][18][19] acyclic diene metathesis (ADMET) polymerization was envisioned first (Fig.…”

Section: Introductionmentioning

confidence: 99%

Toward polymerized artificial photosystems with supramolecular n/p-heterojunctions and antiparallel redox gradients

Sakurai

Areephong

Bertone

et al. 2011

Energy Environ. Sci.

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The evaluation of the importance of both ordered and oriented supramolecular architectures for artificial photosynthesis is a topic of current scientific concern. The objective of this study was to synthesize polymerizable zipper architectures and determine the impact of zipper polymerization on the performance of artificial photosystems. We report the synthesis of negatively and positively charged red naphthalenediimides that are equipped with short and long alkenyl tails and attached along oligophenylethynyl scaffolds. The presence of the short butenyl tails turns out to be tolerated by zipper assembly, whereas those of the longer undecenyl tails are not acceptable. Polymerization of the short-tailed zippers with olefin metathesis, using different catalysts in different solvents, is consistently found to reduce the photocurrent generation. These results suggest that polymerization indeed takes places but disturbs rather than stabilizes supramolecular zipper architectures, i.e., that supramolecular systems perform better than macromolecular architectures, at least in the context of this study. We conclude that constructive covalent capture of artificial photosystems should occur during and not after the self-organization of the artificial photosystems. This important conclusion calls for the invention of self-organizing polymer brushes for the synthesis of advanced organic photosystems

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“…An even more exciting possibility is the combination of systematically tunable supramolecular association units with the formation of covalent bonds, leading to covalently linked structures under reversible conditions. In recent years we have developed a series of information‐storing molecular duplexes 22–31. Our system involves oligoamide strands carrying various arrays (sequences) of amide hydrogens and carbonyl oxygens as hydrogen‐bond acceptors and donors.…”

Section: Introductionmentioning

confidence: 99%

Engineering hydrogen‐bonded duplexes

Gong

2007

Polymer International

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Based on several simple, readily available building blocks, oligoamide strands carrying various arrays of hydrogen-bond donors and acceptors, i.e. hydrogen-bonding sequences, have been designed and synthesized. Detailed characterization indicates that these oligoamide strands associate via their hydrogen-bonding edges into doubled stranded pairs (duplexes), which are characterized by programmable sequence specificity and adjustable stability. Using these hydrogen-bonded duplexes as association units, supramolecular structures, such as β-sheets and non-covalent block copolymers, are obtained by simply mixing the corresponding components. Recently, by incorporating reversible covalent interactions into these hydrogen-bonded duplexes, sequence-specific formation of covalently linked structures has been realized under thermodynamic conditions, which has opened an entirely new avenue to the development of previously unknown dynamic covalent structures such as various block copolymers.

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Template‐Assisted Cross Olefin Metathesis

Cited by 51 publications

References 69 publications

Nanographite sheets derived from polyaniline nanocoating of cellulose nanofibers

Nanographite sheets derived from polyaniline nanocoating of cellulose nanofibers

Toward polymerized artificial photosystems with supramolecular n/p-heterojunctions and antiparallel redox gradients

Engineering hydrogen‐bonded duplexes

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