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This paper reports a Pd\u2010catalysed direct arylation approach for introducing different aryl groups onto fluorobenzene\u2010containing DSB moiety (<jats:bold>7<\/jats:bold>) in high yields (67\u201372\u2009%). The versatile methodology allows the substitution of neutral [tolyl (<jats:bold>1<\/jats:bold>)], electron\u2010deficient [<jats:italic>p<\/jats:italic>\u2010formyl benzene (<jats:bold>2<\/jats:bold>), <jats:italic>p<\/jats:italic>\u2010acetyl benzene (<jats:bold>3<\/jats:bold>), <jats:italic>p<\/jats:italic>\u2010nitrobenzene (<jats:bold>4<\/jats:bold>)] and electron\u2010rich [carbazole (<jats:bold>5<\/jats:bold>), triphenylamine (<jats:bold>6<\/jats:bold>)] aryl groups. The electron\u2010deficient aryls render mono\u2010substitution, while the electron\u2010rich counterparts promote di\u2010substitution. The compounds (<jats:bold>1<\/jats:bold>\u2013<jats:bold>6<\/jats:bold>) show blue, green, and yellow fluorescence in both the solution and solid states; the fluorescence quantum yields reach &gt;98\u2009% and the peak maxima span from 425 to 560\u2005nm. The mono\u2010carbazole DSB (<jats:bold>5<\/jats:bold>) exhibit white light emission (WLM) in polar solvents (acetone, DMF, CH<jats:sub>3<\/jats:sub>CN, DMSO and NMP) with very high fluorescence quantum yields (\u03c6<jats:sub>f<\/jats:sub>) of 60\u201380\u2009%. For WLM, such high efficiency (\u03c6<jats:sub>f<\/jats:sub>) is somewhat uncommon. Moreover, visible\u2010to\u2010NIR reversible electrochromism is demonstrated by the TPA\u2010integrated DSB (<jats:bold>6<\/jats:bold>). The colour of <jats:bold>6<\/jats:bold> changes from pristine light yellow to orange, and the absorption maxima shifts from 372 to 1500\u2005nm when a positive potential of 1.0\u2005V <jats:italic>vs<\/jats:italic> Ag\/Ag<jats:sup>+<\/jats:sup> is applied. Moreover, the system shows high colouration efficiency in the NIR region with fast switching speeds for colouration and decolouration as fast as 0.98\u2005s and 1.05\u2005s.<\/jats:p>","DOI":"10.1002\/chem.202400015","type":"journal-article","created":{"date-parts":[[2024,1,16]],"date-time":"2024-01-16T09:09:10Z","timestamp":1705396150000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Pd\u2010Catalysed Direct Arylation of Distyrylbenzene: Strong Dual\u2010state Fluorescence and Electrochromism"],"prefix":"10.1002","volume":"30","author":[{"given":"Atul B.","family":"Nipate","sequence":"first","affiliation":[{"name":"Department of Chemistry IIT Dharwad  Dharwad 580011 Karnataka India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. 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