Phenothiazinyl Boranes: A New Class of AIE Luminogens with Mega Stokes Shift, Mechanochromism, and Mechanoluminescence
C. Arivazhagan(Indian Institute of Technology Madras), Arunava Maity(Central Salt and Marine Chemicals Research Institute), K. Bakthavachalam(Indian Institute of Technology Madras), Arijit Jana(Indian Institute of Technology Madras), Suraj Kumar Panigrahi(Indian Institute of Technology Madras), Eringathodi Suresh(Central Salt and Marine Chemicals Research Institute), Amitava Das(Central Salt and Marine Chemicals Research Institute), Sundargopal Ghosh(Indian Institute of Technology Madras)
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Abstract
Phenothiazines with a dimesityl boron moiety, a new class of aminoboranes with B-N linkage, were synthesized. These aminoboranes exhibited interesting photophysical behavior including aggregation-induced emission (AIE), mechanochromism (MC), mechanoluminescence (ML), and a mega Stokes shift (up to 312 nm in hexane). The solid-state emission of the aminoboranes could be switched reversibly by grinding-fuming processes. Furthermore, the phenothiazine derivative with a bromo and an arylborane group at 3- and 7-positions exhibited bright mechanoluminescence.
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