"Helter-Skelter-Like" Perylene Polyisocyanopeptides

Research output: Contribution to journalArticle

Abstract

We report on a combined experimental and computational investigation on the synthesis and thorough characterization of the structure of perylene-functionalized polyisocyanides. Spectroscopic analyses and extensive molecular dynamics studies revealed a well defined 4, helix in which the perylene molecules form four "helter skelter-like" overlapping pathways along which excitons and electrons can rapidly migrate. The well-defined polymer scaffold stabilized by hydrogen bonding, to which the chromophores are attached, accounts for the precise architectural definition, and molecular stiffness observed for these molecules. Molecular-dynamics studies showed that the chirality present in these polymers is expressed in the formation of stable right-handed helices. The formation of chiral supramolecular structures is further supported by the measured and calculated bisignated Cotton effect. The structural definition of the chromophores aligned in one direction along the backbone is highlighted by the extremely efficient exciton migration rates and charge densities measured with Transient Absorption Spectroscopy.

Details

Authors
  • Erik Schwartz
  • Vincenzo Palermo
  • Chris E. Finlayson
  • Ya-Shih Huang
  • Matthijs B. L. Otten
  • Andrea Liscio
  • Sara Trapani
  • Irene Gonzalez-Valls
  • Patrick Brocorens
  • Jeroen J. L. M. Cornelissen
  • Kalina Peneva
  • Klaus Muellen
  • Frank C. Spano
  • Arkady Yartsev
  • Sebastian Westenhoff
  • Richard H. Friend
  • David Beljonne
  • Roeland J. M. Nolte
  • Paolo Samori
  • Alan E. Rowan
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics

Keywords

  • polyisocyanides, electron transport, perylene diimides, polymers
Original languageEnglish
Pages (from-to)2536-2547
JournalChemistry: A European Journal
Volume15
Issue number11
Publication statusPublished - 2009
Publication categoryResearch
Peer-reviewedYes

Bibliographic note

The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)