Table 5.2 Properties of six different caging groups.

Caging Group Uncaging Rate * Photolysis Quantum Yield * Inertness of Photolysis By-product Confers Water Solubility Long-Wavelength Absorption
(≥360 nm)
CNB+++++++++++++++++++++
NPE++++++++++++
DMNPE+++++++++++++++
DMNB++++++++++++++
CMNB++++++++++++++
NP++++++++++
+++++ = Optimal response. + = Poor response. * Both the structure of the nitrobenzyl moiety and the atom to which it is attached have some effect on the efficiency and wavelength required for uncaging.