Synthesizing molecular fishing nets

Servalli, Marco; Öttinger, Hans Christian; Schlüter, A. Dieter

doi:10.1063/pt.3.3921

Cited by 26 publications

(22 citation statements)

References 24 publications

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“…Finally, 2D polymers with their defined structures are attractive candidates for molecular constructions. Some ideas concerning this last aspect have been presented in a recent Physics Today article . It should be mentioned, however, that there is not yet the equivalent of “molecular scissors” that would allow cutting precisely the bonds in a sheet that should be cut.…”

Section: Where the Field Might Gomentioning

confidence: 99%

“…Although bearing the risk of misjudgment, we consider a look into the future not only particularly interesting for researchers who are considering joining a field, but also a pragmatic opportunity to try to shape developments to some degree. The second way is also attractive for the fact that review articles as well as a feature article have recently appeared on monolayer 2D macromolecules with long‐ranging structural order, in short: 2D polymers, and that the past is thus well taken care of.…”

Section: Introductionmentioning

confidence: 99%

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Synthetic 2D Polymers: A Critical Perspective and a Look into the Future

Wang

Schlüter

2018

Macromol. Rapid Commun.

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structural order, in short: 2D polymers, and that the past is thus well taken care of.When talking about 2D polymers it is important to note that we use the term "polymer" in Staudinger's sense, that is, it is referring to a macromolecule whose structure, except for the end groups, can entirely be described by repeat units (RU). [4] This clause is important, as the term "2D polymer" had been used in various different meanings way before we proposed a definition in 2009. [2a] Examples include linear polymers confined to 2D space [5] as well as smectic liquid crystalline phases stabilized through linear polymerizations within the layers. [6] Though interesting in their own right, such macromolecules will not be considered in the current review article. When talking about synthetic 2D polymers, we refer to 2D polymers which can be synthesized under mild, typical organic chemistry-style conditions and not to 2D polymers including graphene [7] or (BN) x 2D PolymersThis feature article provides both a critical perspective as to where synthetic 2D polymers currently stand and a rather substantial view into how the future of this exciting field of polymer chemistry might look. It starts out by addressing strategic considerations meant to familiarize the reader with what to expect when entering the field. To better understand these considerations, the very nature of a 2D polymer is addressed in comparison to other organic 2D materials. Thereafter, the article moves quite intensely and critically into synthetic and mechanistic issues of 2D polymers before concentrating on the important structural analytics that one has to go through when unequivocally establishing these novel sheet-like polymeric objects. After a short excursion into the matter of exfoliation, the feature article then culminates in a section attempting to forecast the future. Key differences between 1D and 2D polymers are highlighted, and those considered by the authors to be the most attractive and burning research goals are further discussed. It is hoped that the reader will find this speculative section inspiring enough such that ideas that will help in advancing 2D polymers even faster are generated.

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Section: Where the Field Might Gomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthetic 2D Polymers: A Critical Perspective and a Look into the Future

Wang

Schlüter

2018

Macromol. Rapid Commun.

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“…2D-Polymere sind dementsprechend topologisch planare,t rennbare Monolagen mit interner Fernordnung, zusammengehalten durch starke (kovalente) Bindungen. [94][95][96] Diese Beschreibung findet vermehrt Akzeptanz, aber es gibt auch anderslautende Definitionen. [97,98,107,[99][100][101][102][103][104][105][106] Bis vor wenigen Jahren war es nicht mçglich, 2D-Polymere nach der oben erwähnten Definition herzustellen; [108][109][110][111] das erste Beispiel eines synthetischen 2D-Polymers,d as obiger Definition entspricht, wurde 2012 publiziert.…”

Section: Einführungunclassified

Makroskopische kristalline 2D‐Polymere

Feng

Schlüter²

2018

Angewandte Chemie

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Monolagen mit interner Periodizität können als 2D‐Polymere oder “molekulare Fischernetze” beschrieben werden. Solche Strukturen sind in der Vergangenheit durch photochemische Reaktionen in Einkristallen hergestellt worden, die aus Monomeren mit spezifisch entworfenen Strukturen bestehen. Einzelne Schichten wurden später durch Exfolierung isoliert. Diese milden Bedingungen ermöglichen zwar exzellente Kontrolle über die gebildete Struktur, allerdings ist die Ausdehnung der erhaltenen 2D‐Polymere durch die Kristallausdehnung limitiert. Dieser Aufsatz befasst sich mit Ansätzen zur Herstellung von 2D‐Polymeren mit makroskopischen lateralen Abmessungen. Solche Abmessungen sind zugänglich, wenn Polymerisationsreaktionen an Grenzflächen zwischen zwei Flüssigkeiten bzw. zwischen einer Flüssigkeit und einem Gas (besonders der Wasser/Luft‐Grenzfläche) durchgeführt werden. Damit lassen sich zwar prinzipiell 2D‐Polymere makroskopischer Größe erzeugen, allerdings eröffnen sich neue analytische Probleme. Einige dieser Herausforderungen werden besprochen und die vielversprechendsten Lösungsansätze hervorgehoben. Anhand dreier repräsentativer Strukturen demonstriert dieser Aufsatz den gegenwärtigen Stand der Technik im noch jungen Feld der 2D‐Polymeranalytik. Zuletzt werden mögliche Anwendungen für neue organische 2D‐Materialien beschrieben, z. B. als Nanomembranen, organische (opto)elektronische Komponenten oder Katalysatoren für die Wasserspaltung.

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“…Compound 1 is particularly interesting because its three equally reactive sites cause a unique potential versatility in terms of solid‐state reactivity. It not only affords dimers and linear ladder polymers, but also two‐dimensional polymers can be envisaged, depending on how the anthracene units are arranged in the crystal structure and whether one, two, or even three of these units involve themselves in dimerization reactions. We therefore started a research program initially concentrating on the study of the crystallization and packing behavior of parent anthraphane 1 .…”

Section: Introductionmentioning

confidence: 99%

Single‐Crystal‐to‐Single‐Crystal (SCSC) Linear Polymerization of a Desymmetrized Anthraphane

Servalli

Trapp

Schlüter

2018

Chemistry A European J

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In this work we present one of the rare cases of single-crystal-to-single-crystal (SCSC) linear polymerizations, resulting in a novel ladder-type polymer. The polymerization is based on the photoinduced [4+4]-cycloaddition reactions between trifunctional anthracene-based monomers. The careful design of the monomer anthraphane-tri(OMe), results in perfectly stacked anthracene pairs in the crystal structure, with Schmidt's distances d=3.505-3.666 Å and shift s=1.109 Å, allowing a selective linear polymerization in quantitative yields and in a matter of minutes, without compromising the integrity of the single crystals. The obtained polyanthraphane-tri(OMe), reveals moreover a very interesting and unprecedented case of stereoisomerism, which is characteristic for polyanthraphanes.

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Synthesizing molecular fishing nets

Abstract: The power of organic chemistry is opening new possibilities for building customized two-dimensional materials.

Cited by 26 publications

References 24 publications

Synthetic 2D Polymers: A Critical Perspective and a Look into the Future

Synthetic 2D Polymers: A Critical Perspective and a Look into the Future

Makroskopische kristalline 2D‐Polymere

Single‐Crystal‐to‐Single‐Crystal (SCSC) Linear Polymerization of a Desymmetrized Anthraphane

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