Fluorescent BF complexes of pyridyl-isoindoline-1-ones: synthesis, characterization and their distinct response to mechanical force.

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ID: 71677
2019
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Ranked #39 of 324 articles by views in Dalton transactions (Cambridge, England : 2003)

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Abstract
Three boron-pyridyl-isoindoline-1-one based dyes (B1, B2, and B3) with varied side groups were facilely synthesized. Detailed analyses were carried out concerning the crystal conformation, structure dependent photophysical properties and mechanochromic fluorescence (MCF). The MCF behaviours and solid-state emission were demonstrated to be correlated to the different side groups. Upon grinding, the emission of B1 exhibited little changes, whereas reversible MCF with a distinct colour change was observed for B2 and B3. B3 possessing sterically hindered triphenyl amine (TPA) groups showed the most prominent MCF effect. For instance, mechanical grinding resulted in a red-shift of fluorescence from 600 nm to 650 nm. The electronic and steric effects of the donating substituents were found to play important roles in modulating the intramolecular charge-transfer effect and intermolecular interactions. These sensitively and readily tunable mechano-responsive behaviors of the boron-pyridyl-isoindoline-1-one based dyes make them potential candidates for smart fluorescent materials.
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liu2019fluorescentdalton Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Liu, Meifang;Han, Yi;Yuan, Wei;Guo, Changxiang;Shi, Shiling;Liu, Xia;Chen, Yulan;
Journal Dalton transactions (Cambridge, England : 2003)
Year 2019
DOI
10.1039/c9dt02852h
URL
Keywords
aggregation induced emission mechanochromism anti-counterfeiting photochromism tetraphenylethylene

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