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Issue 94, 2014
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Reversible mechanochromism in dipyridylamine-substituted unsymmetrical benzothiadiazoles

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Abstract

We report the design and synthesis of push–pull benzothiadiazoles (BTDs) of type D1–π–A–π–D2 and D1–π–A–D2. These BTDs show strong charge transfer interaction. BTD 3 shows reversible mechanochromism with color contrast between yellow (crystalline state) and orange (amorphous state). Photophysical and computational studies reveal that the planar orientation of the pyridyl and BTD unit in 2 results in no change in solid state emission whereas non-planar orientation of the dipyridylamine and BTD unit in 3 results in efficient mechanochromism.

Graphical abstract: Reversible mechanochromism in dipyridylamine-substituted unsymmetrical benzothiadiazoles

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Publication details

The article was received on 06 Sep 2014, accepted on 13 Oct 2014 and first published on 14 Oct 2014


Article type: Communication
DOI: 10.1039/C4RA09921D
RSC Adv., 2014,4, 52526-52529

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    Reversible mechanochromism in dipyridylamine-substituted unsymmetrical benzothiadiazoles

    P. Gautam, R. Maragani, S. M. Mobin and R. Misra, RSC Adv., 2014, 4, 52526
    DOI: 10.1039/C4RA09921D

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