Pre-Planarized Triphenylamine-Based Linear Mixed-Valence Charge-Transfer Systems

Overview

Journal Angew Chem Int Ed Engl

Specialty Chemistry

Date 2020 Dec 11

PMID 33306267

Citations 3

Authors

Marcel Krug

Nina Frohlich

Dominik Fehn

Alexander Vogel

Frank Rominger

Karsten Meyer

Timothy Clark

Milan Kivala

Dirk M Guldi

Affiliations

Soon will be listed here.

Abstract

Three linear dimers with two redox-active planarized triphenylamines were synthesized and their structures verified by X-ray crystallography. Their radical cations, which exhibit electron self-exchange between the two redox centers, are of great interest. This process was thoroughly investigated by means of electron paramagnetic resonance spectroscopy, absorption spectroscopy, and (time-dependent) density functional theory calculations. A comparison of the key parameters of electron transfer with non-planarized nitrogen-centered building blocks emphasizes the impact of using redox centers with low internal reorganization energies. However, the distance-dependence attenuation factor of the super-exchange mechanisms remains similar.

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Pre-Planarized Triphenylamine-Based Linear Mixed-Valence Charge-Transfer Systems.

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