Reversible chirality inversion of an AuAgx-cysteine coordination polymer by pH change

Bing Ni (), Dustin Vivod, Jonathan Avaro, Haoyuan Qi, Dirk Zahn, Xun Wang and Helmut Cölfen ()
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Bing Ni: University of Konstanz
Dustin Vivod: Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Chair for Theoretical Chemistry/Computer Chemistry Centre (CCC) Nägelsbachstrasse 25
Jonathan Avaro: Center for X-ray Analytics, Biomimetic Membranes and Textile, Empa, Swiss Federal Laboratories for Materials Science and Technology
Haoyuan Qi: Technische Universität Dresden
Dirk Zahn: Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Chair for Theoretical Chemistry/Computer Chemistry Centre (CCC) Nägelsbachstrasse 25
Xun Wang: Tsinghua University
Helmut Cölfen: University of Konstanz

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Responsive chiral systems have attracted considerable attention, given their potential for diverse applications in biology, optoelectronics, photonics, and related fields. Here we show the reversible chirality inversion of an AuAgx-cysteine (AuAgx-cys) coordination polymer (CP) by pH changes. The polymer can be obtained by mixing HAuCl4 and AgNO3 with L-cysteine (or D-cysteine) in appropriate proportions in H2O (or other surfactant solutions). Circular dichroism (CD) spectrum is used to record the strong optical activity of the AuAg0.06-L-cys enantiomer (denoted as L0.06), which can be switched to that of the corresponding D0.06 enantiomer by alkalization (final dispersion pH > 13) and can be switched back after neutralization (final dispersion pH

Date: 2024
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DOI: 10.1038/s41467-024-45935-3

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