Unraveling Concomitant Packing Polymorphism in Metallosupramolecular Polymers

Journal of the American Chemical Society
Anja LangenstroerGustavo Fernández

Abstract

The phenomenon of polymorphism is ubiquitous in biological systems and has also been observed in various types of self-assembled materials in solution and in the solid state. In the field of supramolecular polymers, different kinetic vs thermodynamic self-assembled species may exist in competition, a phenomenon termed as pathway complexity. In these examples, the transient kinetic species often has a very short lifetime and rapidly converts into the thermodynamic product. In this work, we report a π-conjugated Pt(II) complex 1 that self-assembles in nonpolar medium into two competing supramolecular polymers with distinct molecular packing (slipped (A) vs pseudoparallel (B)) that do not interconvert over time in a period of at least six months at room temperature. Precise control of temperature, concentration, and cooling rate enabled us to ascertain the stability conditions of both species through a phase diagram. Extensive experimental studies and theoretical calculations allowed us to elucidate the packing modes of both supramolecular polymorphs A and B, which are stabilized by unconventional N-H···Cl-Pt and N-H···O-alkyl interactions, respectively. Under a controlled set of conditions of cooling rate and concentration, both ...Continue Reading

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Citations

May 9, 2019·Chemical Communications : Chem Comm·Yeray DorcaLuis Sánchez
Jul 5, 2019·Angewandte Chemie·Jonas MaternGustavo Fernández
Dec 19, 2019·Angewandte Chemie·Ingo HelmersGustavo Fernández
Jul 28, 2019·Angewandte Chemie·Nils BäumerGustavo Fernández
Mar 10, 2020·Chemistry : a European Journal·Norihiko SasakiKazunori Sugiyasu
Jul 30, 2020·Angewandte Chemie·Souvik SarkarSubi J George
Jul 19, 2020·Nature Communications·Norihiko SasakiKazunori Sugiyasu
Sep 3, 2020·Chemical Science·Jonas MaternGustavo Fernández
Oct 31, 2020·Nature Communications·Marius WehnerFrank Würthner
Mar 24, 2021·Journal of the American Chemical Society·Takuya FukushimaShiki Yagai
Apr 30, 2021·Journal of the American Chemical Society·Jonas MaternGustavo Fernández
May 20, 2021·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Jingqi ChenLingyan Feng
Jul 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Berta FernándezFélix Freire
Mar 5, 2020·Chemical Science·Kaka Zhang, Vivian Wing-Wah Yam
Jul 27, 2021·Journal of the American Chemical Society·Souvik SarkarSubi J George
Jun 6, 2020·Journal of the American Chemical Society·Aritra SarkarSubi J George
Apr 3, 2020·Journal of the American Chemical Society·Aritra SarkarSubi J George
Jul 28, 2019·Journal of the American Chemical Society·Atsuhito SuzukiShiki Yagai
Nov 26, 2021·Angewandte Chemie·Jorge S ValeraLuis Sánchez

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