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Showing 1–14 of 14 results
Advanced filters: Author: Helmut Cölfen Clear advanced filters

  • Fiona C. Meldrum and Helmut Cölfen chalk up some of the myriad forms and uses of calcium carbonate to burnish a ‘dull’ reputation.

    • Fiona C. Meldrum
    • Helmut Cölfen
    Comments & Opinion
    Nature Chemistry
    Volume: 15, P: 1196

  • Reactive chiral systems have attracted much attention in biology, optoelectronics, and photonics; however, a comprehensive understanding of these systems remains incomplete. Here the authors show the reversible chirality of AuAgx-cys coordination polymers induced by pH changes.

    • Bing Ni
    • Dustin Vivod
    • Helmut Cölfen
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-10

  • Freeze-drying of aqueous myoglobin–polymer surfactant nanoconjugates affords a water-free solid that melts at room temperature to produce a viscous solventless liquid protein that exhibits near-native secondary structure and reversible dioxygen binding. The results challenge the accepted role of solvent molecules in mediating protein structure and function, and offer new opportunities in protein-based nanoscience and bionanotechnology.

    • Adam W. Perriman
    • Alex P. S. Brogan
    • Stephen Mann
    Research
    Nature Chemistry
    Volume: 2, P: 622-626

  • The mechanisms of biomineralization remain hotly debated. Now high-resolution microscopy yields unsurpassed insight into mechanisms relevant both to the biomineralization of bone and teeth and to pathological mineralization.

    • Helmut Cölfen
    News & Views
    Nature Materials
    Volume: 9, P: 960-961

  • Sensitive, biocompatible and stable contrast agents for MRI are in demand. Here, the authors combine gadolinium ions with amorphous calcium carbonate to make stable paramagnetic amorphous carbonate nanoclusters with high MRI contrast and significantly improved biocompatibility over commercial gadolinium-based agents.

    • Liang Dong
    • Yun-Jun Xu
    • Shu-Hong Yu
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-13

  • A lack of guiding principles limits the preparation of two-dimensional (2D) materials prepared by a solution-phase growth route. Now, a general qualitative model for 2D material growth is proposed and applied to fabricate more than 30 nanomaterials, allowing 2D growth to be controlled by only tuning the reaction concentration or temperature.

    • Zongkun Chen
    • Ralf Schmid
    • Helmut Cölfen
    Research
    Nature Synthesis
    Volume: 2, P: 670-677

  • Multistage crystallization pathways involving nanoscopic precursors or intermediates have been proposed for various systems. Here, the authors find compelling evidence that nanoscopic species participate in the crystallization of glutamic acid monohydrate, extending this non-classical growth mechanism to organic crystals.

    • Yuan Jiang
    • Matthias Kellermeier
    • Helmut Cölfen
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-7

  • The exterior layers of mollusk shells are prismatic in nature, endowing them with stiffness and wear resistance. Inspired by these biominerals, here, Jiang and colleagues grow structurally similar prismatic-type CaCO3 thin films with comparable stiffness and hardness.

    • Chuanlian Xiao
    • Ming Li
    • Helmut Cölfen
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-9

  • Artificial materials that replicate the mechanical properties of nacre represent important structural materials, but are difficult to produce in bulk. Here, the authors exploit the bottom-up assembly of 2D nacre-mimetic films to fabricate 3D bulk artificial nacre with an optimized architecture and excellent mechanical properties.

    • Huai-Ling Gao
    • Si-Ming Chen
    • Shu-Hong Yu
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-8

  • Biological materials efficiently exploit self-assembly of simple constituents to produce complex functional structures such as optical devices. By controlling organic molecules, Leeet al. show fast two-step self-assembly of CaCO3microlens arrays, reminiscent of their biological counterparts.

    • Kyubock Lee
    • Wolfgang Wagermaier
    • Peter Fratzl
    ResearchOpen Access
    Nature Communications
    Volume: 3, P: 1-7

  • Controlling the assembly of nano-objects with precision is important in the synthesis of materials with enhanced properties. Here, the authors present a protein adaptor-based nano-object assembly (PABNOA), allowing the assembly of nanoparticles with defined interparticle distances.

    • Andreas Schreiber
    • Matthias C. Huber
    • Stefan M. Schiller
    Research
    Nature Communications
    Volume: 6, P: 1-11

  • The formation mechanism of abundant calcium oxalate biomaterials is unresolved. Here the authors show the early stages of calcium oxalate formation in pure and citrate-bearing solutions by using a titration set-up in conjunction with solution quenching, transmission electron microscopy and analytical ultracentrifugation.

    • Encarnación Ruiz-Agudo
    • Alejandro Burgos-Cara
    • Carlos Rodriguez-Navarro
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-10