Lighting Silver(I) Complexes for Solution-Processed Organic Light-Emitting Diodes and Biological Applications via Thermally Activated Delayed Fluorescence

Luminescent coinage metal complexes have shown promising applications as electrolurriinescent emitters, photocatalysts/photosensitizers, and bioimagingitlieranostic agents, rendering them attractive alternatives to transition metal complexes based on iridium, ruthenium, and platinum that have extremely low earth abundance. In comparison to the widely studied Au(I) and Cu(I) complexes, Ag(I) complexes have seldom been explored in this field because of their inferior emission properties. Herein, we report a novel series of [Ag(NAN)(pAp)]. xhrbitinghighlYefficientthermallYactivated delaed fluorescence busineasilYaccessible neutraldiamineyygs c hela t es.PF6cumPlexese pigandsandcoumerciaflyalailablealcillarV diPi 'Phte The Ph toinminescence-uantum yields (PLQYs) of the Ag(I) emitters ate< 62lndopeufilms.ThehlghpLQy-th a large delayed fluorescence ratio a to enabled the fabrication of s light-emittingorganic di des(oLEDs) with ahighmax'mumexternalguautum efficiency f8.76%'aongtheh'hest values for based superior e ssi nPr Peties and an excited staefetimelnrhenicr sec ndtegime, together with its potent itYtheseecteaAg(1) complex has' been sed for simh t e usceiIinagingandanticancer treatment in human liver carcinoma HepG2 cells) revealing theP tential fnescentAg(I) comPlexe'fnthiolog1calapPiicati'ns such as therancstics.