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Front Cover: Exploring 2‐D σ−σ* Conjugation in Cyclic Polysiloxane Copolymers

Year: 2026

Type: paratext

Abstract: In the Research Article (DOI: 10.1002/marc.70348), Richard M. Laine and co-workers find σ-σ* conjugation in copolymers synthesized by reacting the cyclomer [vinylMeSiO]4 in a 1:1 ratio with various Br─Ar─Br. Further, on modifying the remaining unsubstituted viny groups with Br─Ar', the main chain photophysics is changed. As a test, Br─Ar' groups are appended on the cyclomer alone. As σ-σ* conjugation is observed, coincident with significant flattening of the ring reveals as 140℃ bond angles perhaps suggesting ring current.

Source: Macromolecular Rapid Communications

DOI: 10.1002/marc.70393

Authors: Zijing Zhang, Cecilia Pilon, Pimjai Pimbaotham, Siriporn Jungsuttiwong, Aleksander Rebane, Richard M. Laine

Language: English

Topic: Silicone and Siloxane Chemistry

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W7208725855

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