4.6 Article

Self-Organization of Porphyrin-POM Dyads: Nonplanar Diacids and Oxoanions in Low-Dimensional H-Bonding Networks

Journal

MOLECULES
Volume 27, Issue 20, Pages -

Publisher

MDPI
DOI: 10.3390/molecules27207060

Keywords

supramolecular chemistry; porphyrins; crystallography; polyoxometalates (POMs); molecular engineering

Funding

  1. Technical University of Munich-Institute for Advanced Study through a Hans Fischer Senior Fellowship
  2. European Union's Horizon 2020 research and innovation program under the FET-OPEN grant [828779]
  3. Science Foundation Ireland [21/FFP-A/9469]
  4. Higher Education Authority
  5. Department of Further and Higher Education, Research, Innovation and Science (Ireland)

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Coordinating the spatial arrangement of electroactive partners is crucial in designing molecular electronics and photonics. This study demonstrates a viable method of organizing electroactive centers into filaments and monolayers by manipulating nonplanar porphyrins through self-organization and charge-balance principles. The results provide insights into the interactions and induced conformations of porphyrin acids and nonstandard counterions, facilitating the development of surface deposition and ultrathin devices.
Coordinating the spatial arrangement of electroactive partners is crucial to designable molecular electronics and photonics. Porphyrins are ubiquitous reaction centers in nature; synthetic porphyrins, in the crystallographic solid state, are often coerced into monolithic stacks, inhibiting reactivity. Using the principles of self-organization, and by exploiting charge-balance principles, we can manipulate nonplanar porphyrins into one- and two-dimensional hydrogen-bonded polymers, with polyoxometalate (POM) and bifunctional counter-anions serving as linkers. Herein, we report 11 crystal structures as a systematic study of the interactions between dodecasubstituted porphyrin acids and nonstandard counterions, as well as the induced conformations in the porphyrin core. We can show that this hydrogen bond chelate is a viable method of organizing electroactive centers into filaments and monolayers for surface deposition and ultrathin devices.

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