Systematic derivatives of 1‐(dicyanomethylene)indan and their photophysical properties as potential viscosity sensors
作者:Tae‐Ho Roh、Min‐Sung Ko、Pradeep P. Desale、Dong‐Gyu Cho
DOI:10.1002/bkcs.12838
日期:——
This study focuses on derivatizing 1-(dicyanomethylene)indan as a viscosity sensor. The indan was extended with various functionalized naphthaldehydes under a push–pull design strategy. Among synthesized derivatives, salt-capped derivatives exhibited an excellent linearity between fluorescent intensity and viscosity (R2 = 0.99), and further investigation underscores the reversible nature of fluorescence
A polyester film is described, including a first polyester and a second polyester. The weight ratio of the first polyester to the second polyester ranges from 1:1 to 1:3. The glass transition temperature of the first polyester is higher than 140° C. and that of the second polyester is lower than 140° C.