Doped organic matrices

As described earlier, most of the studies on photocontrolled transport phenomenon focused on azobenzene-doped organic platforms such as planar lipid membranes and spherical vesicles, which have an intrinsic disadvantage. Those lipid membranes and vesicles are delicate and unstable, thus limiting their practical applications. Incorporation of the azobenzene moieties into a robust inorganic matrix greatly enhances the system stability and facilitates the device fabrication. For example, azobenzene moieties precisely positioned onto the pore surfaces of mesoporous silica membranes enable novel photocontrolled transport in the resulting composite materials (Liu et al., 2004). 

Therefore, the different complexes affect the external quantum efficiency of dye doped organic light-emitting diodes. This arises, because the efficiency of Forster energy transfer from the matrix to the dye is dependent on the degree of overlap between the EL spectrum of the matrix material and the absorption spectrum of the dye. ... 

Bardo A.M., Collinson M.M., Higgins D.A. Nanoscale properties and matrix-dopant interactions in dye-doped organically modified silicate thin films. Chan. Mata. 2001 13 2713-2721 Bauer R.K., de Mayo P., Ware W.R., Wu K.C. Surface photochanistry. The photophysics of pyrene adsorbed on silica gel, alumina and calcium fluoride. J. Phys. Chem. 1982 86 3781-3789 Biteau J., Chaput F., Boilot J.-P. Photochromism of spirooxazine-doped gels. J. Phys. Chem. 1996 lOfr. 9024-9031... 

Bardo, A. M., M. M. Collinson, and D. A. Higgins, 2001. Nanoscale properties and matrix-dopant interactions in dye-doped organically modified sihcate thin films. Chem Mater 13 2713-21. 

D. Avnir, Organic Chemistry within Ceramic Matrixes Doped Sol Gel Materials, Acc. Chem. Res., 1995, 28, 328. 

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