First coumarin modified silica aerogels
Prepared by copolymerization of coumarin monomer with silica monomer or by surface modification of silica gel
UV induced dimerization of coumarin groups in TEPC–TMOS copolymer aerogels resulted in 41% increase in strength.
UV induced dimerization of coumarin groups in TMPC-surface modified silica aerogels resulted in no change in strength.