English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

From organic electronics to biological systems, understanding the role ofintermolecular interactions between spin pairs is a key challenge. Here we showhow such pairs can be selectively addressed with combined spin and opticalsensitivity. We demonstrate this for bound pairs of spin-triplet excitationsformed by singlet fission, with direct applicability across a wide range ofsynthetic and biological systems. We show that the site-sensitivity of exchangecoupling allows distinct triplet pairs to be resonantly addressed at differentmagnetic fields, tuning them between optically bright singlet (S=0) and darktriplet, quintet (S=1,2) configurations: this induces narrow holes in a broadoptical emission spectrum, uncovering exchange-specific luminescence. Usingfields up to 60 T, we identify three distinct triplet-pair sites, with exchangecouplings varying over an order of magnitude (0.3-5 meV), each with its ownluminescence spectrum, coexisting in a single material. Our results reveal howsite-selectivity can be achieved for organic spin pairs in a broad range ofsystems.

Site-selective measurement of coupled spin pairs in an organic semiconductor