Paper Title
New Type of Mechanochromic Tadf Dyes Based on Thioxanthenone Derivetives, For Oled Application

Abstract
Thioxan then one has a good photoluminescence quantum yield and a sufficiently high triplet. It absorbs the light in spectrum’s visible region, and exhibits the fluorescence and phosphorescence, which can be useful for determining and characterizing photo physical properties. Recently, thioxan then one has become an attractive building block in phosphorescent and TADF emitters due to its outstanding electron acceptance and transporting ability. In this study, a dye containing a derivative as an acceptor moiety was designed and synthesized. The photoluminescence spectra (PL) of the hammered dye was shifted and the dye was mechano chromic. The ionization potential (IP) of the spin-coated dye on the fluorine-tin oxide film was -5.49 eV. In addition, a maximum external quantum efficiency of 4.19% was achieved. Keywords – Thioxan then one, Photo Physical Properties, Mechano Chromic, TADF, OLEDS.