A02 Ito’s paper on all-hydrocarbon polyspirenes was published in Org. Lett., and highlighted as a front cover picture. Congratulations.

Synthesis, Structures, and Properties of Polybenzo[n]spirenes With Carbon-based Polyspiroconjugation
Kumpei Hasebe, Kenichiro Itami, Hideto Ito*
ChemRxiv. Sep. 1st, 2025. DOI: 10.26434/chemrxiv-2025-lns30
Org. Lett. 2025, 27, 11832–11836. DOI: 10.1021/acs.orglett.5c03654
Selected as a Supplementary Cover Art.
Published as part of Organic Letters special issue “π-Conjugated Molecules and Materials”.

Key Points of This Study: Synthesis of novel polyspyrene molecules composed exclusively of hydrocarbons—suggesting extension of “Spiro-Conjugation” without interatomic bonds
・Synthesis of novel polyspyrene molecules composed exclusively of hydrocarbons, previously unachieved.
・Achieved extension of the polyspyro structure through repeated three-step reaction pathways starting from anthraquinone.
・Identification of the extension of “spiro-conjugated” structures without interatomic bonds and its impact on photophysical properties.