LAUSR.org creates dashboard-style pages of related content for over 1.5 million academic articles. Sign Up to like articles & get recommendations!

Multicolor mechanochromism of a phenothiazine derivative through molecular interaction and conformational modulations

Photo by lastly from unsplash

Abstract Mechanochromic luminescent (MCL) materials have attracted great attention in the fields of sensing, memory chips, and anti-counterfeiting. However, most MCL materials only display a two-color change and it is… Click to show full abstract

Abstract Mechanochromic luminescent (MCL) materials have attracted great attention in the fields of sensing, memory chips, and anti-counterfeiting. However, most MCL materials only display a two-color change and it is challenging to achieve multicolor mechanochromism with a single molecule. Herein, we reported a twisted D-π-A type molecule (PZ-BZ) composed of a phenothiazine (donor), 1,4-phenylene unit (π), and benzothiazole (acceptor). PZ-BZ exhibits intramolecular charge transfer and aggregation-induced emission enhancement properties. Additionally, the multicolor mechanochromic behaviour of PZ-BZ single crystal is observed. The original crystal of PZ-BZ emits cyan fluorescence (470 nm). When crushed, it exhibits blue-shifted emission (455 nm) due to the destruction of intermolecular interactions. Further grinding induces conformation planarization, resulting in large red-shifted fluorescence (503 nm). This study provides a deep insight into the molecular mechanism of multicolor mechanochromism through molecular interaction and conformation modulations.

Keywords: phenothiazine derivative; multicolor mechanochromism; mechanochromism phenothiazine; mechanochromism; molecular interaction

Journal Title: Dyes and Pigments
Year Published: 2021

Link to full text (if available)


Share on Social Media:                               Sign Up to like & get
recommendations!

Related content

More Information              News              Social Media              Video              Recommended



                Click one of the above tabs to view related content.