Conformational preorganization of neighbouring groups modulates and expedites polymer self-deconstruction - Nature Chemistry

Cleavable bonds are a central strategy for polymer deconstruction, but controlling the rate of breakdown remains difficult because it is dictated by intrinsic bond cleavage kinetics. Now it has been s...

doi.org

Precise Synthesis of Pyrene-Based Molecular Nanocarbons Driven by Dehydro-Diels–Alder Reactions

Molecular nanocarbons are critical bridges between small polycyclic aromatic hydrocarbons and extended graphene lattices, driving advances across materials science, optoelectronics, and quantum technologies. However, the atomically precise synthesis of such systems, particularly those featuring K-region and cove-type topologies, remains an enduring challenge. Here, we present a de novo modular strategy that overcomes this constraint by directing K-region growth via annulation of preorganized aryl acetylnaphthalene precursors with acetylenedicarboxylate. The strategy mirrors the hierarchical construction of pyrene by formally inserting naphthalene fragments into spatially defined molecular scaffolds. This method integrates Suzuki–Miyaura coupling with a Zn(OTf)2-catalyzed cascade comprising Friedel–Crafts alkylation, dehydro-Diels–Alder cycloaddition, and dehydrogenative aromatization. The platform affords structurally diverse pyrene-based molecular nanocarbons with programmable control over topology and dimensionality, spanning linear, contorted, and three-dimensional π-architectures. These results establish a generalizable blueprint for bottom-up synthesis of complex carbon-rich architectures with atomic precision.

pubs.acs.org

Simple Lipid Amphiphiles Co-Assemble to Exhibit Growth into Non-Equilibrium Catalytic Vesicles that Generate Osmolytes to Demonstrate Self-Division and Eventually Decay

Compartments seen in diverse length scales across all life forms are kinetically stable as these need energy and matter to sustain spatial organization, enable growth, division and ultimately undergo ...

chemrxiv.org

Solution-phase stabilization of a cyclocarbon by catenane formation

Cyclo[N]carbons, molecular rings consisting solely of N carbon atoms, have previously been studied in the gas phase and on surfaces at cryogenic temperatures, but they are generally considered too rea...

doi.org

Carbazole-functionalized Chichibabin diradicaloids with redshifted absorption and enhanced photoluminescence

Organic radicals and diradicaloids that are both stable and luminescent are promising candidates for molecular qubits in quantum technologies. Here we report two new carbazole-functionalized…

buff.ly

Solvent‐Induced Chirality Inversion in Propeller‐Shaped PDI Oligomers with Bright Circularly Polarized Luminescence

A highly luminescent propeller-shaped PDI hexamer exhibiting solvent-responsive circularly polarized luminescence (CPL) was synthesized via a one-pot reaction. The propeller chirality undergoes rever...

onlinelibrary.wiley.com

Carbazole-functionalized Chichibabin diradicaloids with redshifted absorption and enhanced photoluminescence

Organic radicals and diradicaloids that are both stable and luminescent are promising candidates for molecular qubits in quantum technologies. Here we report two new carbazole-functionalized…

pubs.rsc.org

Synergistic Co‐Recycling: Selective Oxidation of Polyethylene to Dicarboxylic Acids over Spent LiCoO2 Cathodes

This work introduces a co-upcycling strategy to simultaneously valorize waste polyethylene and spent lithium-ion batteries. By repurposing retired LiCoO2 cathode materials as catalysts, we demonstrat...

doi.org

Decimeter-length elastic organic crystals capable of mechanical post-processing and optical waveguide modulation at 77 K

The development of decimeter-length organic crystals that remain elastic, functional, and machinable at extremely low temperatures, such as in liquid nitrogen (LN) environments, is a great challenge. ...

pubs.rsc.org

Homeostatic artificial cells enable self-protection in prototissue spheroids

Prototissues made from artificial cells (ACs) aim to replicate the behaviors of living tissues, such as communication, collective behavior, and homeos…

sciencedirect.com

Supramolekulare Chemie | Gesellschaft Deutscher Chemiker e.V.

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Work with us | The Roberts Lab

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Molecular Design for Dual Circularity: Polyester with Complementary Mechanical and Chemical Recyclability under Mild Conditions

A dual circularity concept was demonstrated to prevent plastic waste accumulation, where rational design paved the way. Apart from fully recovery of mechanical and thermal properties after as many as...

doi.org

Ring‐in‐Ring Assembly Facilitates the Synthesis of a [12]Cycloparaphenylene ABC‐Type [3]Catenane

By threading a secondary ammonium salt through the crown ether and closing the third ring via CuAAC click reaction, we obtained a rare ABC-type hetero-[3]catenane comprising [12]CPP, 24-crown-8 and a...

onlinelibrary.wiley.com

Selective Synthesis of Z-Michael Acceptors via Hydroalkylation of Conjugated Alkynes

Hydroalkylation of terminal alkynes is a powerful approach to the synthesis of disubstituted alkenes. However, its application is largely unexplored in the synthesis of α,β-unsaturated carbonyls, whic...

pubs.acs.org

A Helical Tubular Dyad of [9]Cycloparaphenylene: Synthesis, Chiroptical Properties and Post‐Functionalization

Employing the site-specific functionalization strategy, a radially conjugated, helical tubular molecule has been constructed by covalently connecting [9]cycloparaphenylenes with three sp-hybridized a....

onlinelibrary.wiley.com

A photoswitchable handheld volumetric 3D display

The use of photochromic materials in volumetric three-dimensional (3D) displays can allow rich visual experiences by representing 3D content that occu…

sciencedirect.com