Tuning the Spin Interaction in Nonplanar Organic Diradicals through Mechanical Manipulation.

ABSTRACT: Open-shell polycyclic aromatic hydrocarbons (PAHs) represent promising building blocks for carbon-based functional magnetic materials. Their magnetic properties stem from the presence of unpaired electrons localized in radical states of π character. Consequently, these materials are inclined to exhibit spin delocalization, form extended collective states, and respond to the flexibility of the molecular backbones. However, they are also highly reactive, requiring structural strategies to protect the radical states from reacting with the environment. Here, we demonstrate that the open-shell ground state of the diradical 2-OS survives on a Au(111) substrate as a global singlet formed by two unpaired electrons with antiparallel spins coupled through a conformational-dependent interactio

SUBMITTER: Vegliante A 

PROVIDER: S-EPMC11448760 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature