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Klar und deutlich: Ein leistungsstarkes und schnelles elektrochromes Display (ECD) mit passiver Matrix wurde aus einem Leukofarbstoff und einer nanoporösen TiO2‐Elektrode konstruiert (siehe Bild). Die senkrechten Poren verhindern eine Bewegung der Farbstoffmoleküle und führen dadurch zu klaren Bildern bei hohen Frequenzen. Mit einer farbigen Variante dieses ECD könnten konkurrenzfähige elektrische Reflektivdisplays entwickelt werden.

SynopsisThe thermal behavior of a new bismaleirhide, 2,2-bis[4-(4-maleimi&phenoxy)phenyl]propane (BBMI) and its mixtures with a conventional monomer, bis( 4-maleimidophenyl )methane (BMI) were investigated by differential scanning calorimetry. The melting point of BBMI was 142OC, lower than that of BMI, although its molecular weight is about twice that of BMI. Each of these bismaleimides and their mixtures showed a melting point when heating, but did not have a distinct freezing point when cooling because of vitrification. The unobserved freezing curve was estimated by calculation based on Schrijder's equation using melting point and molar heats of fusion in both bismaleimides. The cured product of BBMI has thermal stability as good as that of BMI. Moreover, the cured product of BBMI has a high flexural strength and a high flexural elongation owing to the introduction of flexible ether bonds and long phenoxy groups within the monomer structure.