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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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真强必胜: 金币+1, 谢谢 2014-11-04 14:55:48
笔墨轻点: 金币+15, 翻译EPI+1, ★★★★★最佳答案 2014-11-04 19:41:05
有机材料的然稳定性对其作为荧光发光体的应用中是至关重要的,因为其热稳定性决定了设备的稳定性和寿命。如果一个设备发热超过其有机材料组分的Tg,就会发生不可逆的故障。因此,相对高的Tg为用于光电应用的发光材料是必不可少的。用差示扫描量热法(DSC)和热重分析(TGA)研究了热性能。1B-TPA,2B-TPA和3B-TPA的Tg值分别为137.9,196.7和214.3℃,均明显高于所报道的两种AIE活性复合物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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