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| The thermal stability of organic materials is critical for their applications as luminescent emitters because thermal stability governs the stability and lifetime of devices. If a device is heated above theTg of its organic material components, irreversible failure can occur. Hence, a relatively high Tg is essential for emissive materials used for optoelectronic applications. Thermal properties were investigated by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). The Tg values of1B-TPA, 2B-TPAand3B-TPAwere 137.9, 196.7 and 214.3 C, respectively, which were much higher than those of the two reported typical AIE-active compounds, 1-methyl-1,2,3,4,5-pentaphenylsilole (MPPS, 54 C) and 1,1,2,3,4,5-hex-aphenylsilole (HPS, 65 C). |
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| 有機(jī)材料的然穩(wěn)定性對(duì)其作為熒光發(fā)光體的應(yīng)用中是至關(guān)重要的,因?yàn)槠錈岱(wěn)定性決定了設(shè)備的穩(wěn)定性和壽命。如果一個(gè)設(shè)備發(fā)熱超過(guò)其有機(jī)材料組分的Tg,就會(huì)發(fā)生不可逆的故障。因此,相對(duì)高的Tg為用于光電應(yīng)用的發(fā)光材料是必不可少的。用差示掃描量熱法(DSC)和熱重分析(TGA)研究了熱性能。1B-TPA,2B-TPA和3B-TPA的Tg值分別為137.9,196.7和214.3℃,均明顯高于所報(bào)道的兩種AIE活性復(fù)合物1-甲基-1,2,3-,4,5-五苯基噻咯(MPPS,54℃)和1,1,2,3,4,5,六苯基噻咯(HPS,65℃)。 |
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