Novel fluorescent crack sensors have been developed based on dimeric anthracene moiety- containing polymers. Two anthracene derivatives, 9-anthraldehyde (AA) and 9- anthracenecarboxylic acid (AC), were photodimerized to obtain cyclooctane-type dimers. Crack-sensing polymers (Poly-AA and Poly-AC) were prepared by crosslinking of poly (vinyl alcohol) by using the dimers as crosslinkers. The polymers afforded transparent, hard ...
![5,6,11,12-tetrahydro-5,12,6,11-di-o-benzeno-dibenzo[a,e]cyclooctene-5,11-dicarbaldehyde Structure](https://image.chemsrc.com/caspic/123/20830-63-1.png)