Abstract
The photochemistry of biphenyl (BP) was studied on two model solid supports, silicalite and
cellulose, using time resolved diffuse reflectance techniques and product degradation analysis. The results
showed that the photochemical behaviour of BP depends on the solid support. Ground state absorption spectra
indicated a near planar configuration in the ground state. BP triplet state was the only species detected
on cellulose, while the radical cation