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苝二酰亚胺(PBI)作为一种环保、节能、实用的新型材料,具有高的热稳定性和溶解性,酰亚胺基团具有强的吸电子能力,湾位取代对甲基苯氧基使其形成稳定阴离子,而PBI衍生物的光电性能与其能够形成相对稳定的还原态有关。通过热重、紫外-可见分光光度法,荧光分光光度法和电化学等测试手段对N,N′-异辛基-1,7-二甲基苯氧基苝二酰亚胺(DFPBI)进行了系统测试,发现DFPBI具有更好的溶解性和热稳定性、更宽的吸收范围以及更低的吸收带隙且具有电致变色的现象。因而其在电质变色、传感具有潜在应用前景。
As an environmentally friendly, energy-saving and practical new material, perylenediimide (PBI) has high thermal stability and solubility, imide groups have strong electron-withdrawing ability, bay-substituted p-methylphenoxy Group to form a stable anion, while the PBI derivative’s optoelectronic properties are related to its ability to form a relatively stable reduced state. N, N’-isooctyl-1,7-dimethylphenoxy perylene diimide (DFPBI) was tested by thermogravimetry, UV-Vis spectrophotometry, fluorescence spectrophotometry and electrochemical measurements System testing revealed that DFPBI has better solubility and thermal stability, wider absorption range and lower absorption band gap and electrochromism. Thus its color change in electricity, sensing has potential applications.