(US5695890-A)      The multilayered composition has pillared metal complexes on a supporting substrate (2) which may comprise an organic polymer template. The pillars comprise divalent electron acceptor moieties (12) with a phosphate or arsenate (14) at each end.    The supporting substrate has a hetero-lamellar film comprising the complex formula; -L-[(YO3-Z-Y2O3)MeY]k.k^*p(Xq-)    where L forms a link, Y1 and Y2 are phosphorus or arsenic, Z is a divalent group which forms a stable reduced and oxidised form, X is an anion,    MeY is Me1nWm, where Me1 is a divalent, trivalent or tetravalent metal of group III, IVA or IVB having an atomic number of 21 or a lanthanide; W is an anion, n is 1, 2, or 3; m is 0, 1, 2, 3, or 4; k ranges from 1 to 250; p has a value from 0 to 3 and q is the charge on X. Each complex is bound to the substrate through L.    Each layer of parallel pillars is separated by a layer of a group (IVA), (IVB), (IIIA) or (IIIB) metal or a lanthanide (18). Particles of one or more group (VIII) metal at zero valence is trapped within each layer of the complex.    USE -   The complexes are useful for the conversion and storage of solar energy, for production of photocurrents and as catalysts for reduction reactions e.g. for hydrogen peroxide from hydrogen and oxygen gasses, hydrogen gas from water and reduction of ketones to form alcohols.    (EP871985-A1)      The multilayered composition has pillared metal complexes on a supporting substrate (2) which may comprise an organic polymer template. The pillars comprise divalent electron acceptor moieties (12) with a phosphate or arsenate (14) at each end.    The supporting substrate has a hetero-lamellar film comprising the complex formula; -L-[(YO3-Z-Y2O3)MeY]k.k^*p(Xq-)    where L forms a link, Y1 and Y2 are phosphorus or arsenic, Z is a divalent group which forms a stable reduced and oxidised form, X is an anion,    MeY is Me1nWm, where Me1 is a divalent, trivalent or tetravalent metal of group III, IVA or IVB having an atomic number of 21 or a lanthanide; W is an anion, n is 1, 2, or 3; m is 0, 1, 2, 3, or 4; k ranges from 1 to 250; p has a value from 0 to 3 and q is the charge on X. Each complex is bound to the substrate through L.    Each layer of parallel pillars is separated by a layer of a group (IVA), (IVB), (IIIA) or (IIIB) metal or a lanthanide (18). Particles of one or more group (VIII) metal at zero valence is trapped within each layer of the complex.    USE -   The complexes are useful for the conversion and storage of solar energy, for production of photocurrents and as catalysts for reduction reactions e.g. for hydrogen peroxide from hydrogen and oxygen gasses, hydrogen gas from water and reduction of ketones to form alcohols.    (JP2000515295-W)      The multilayered composition has pillared metal complexes on a supporting substrate (2) which may comprise an organic polymer template. The pillars comprise divalent electron acceptor moieties (12) with a phosphate or arsenate (14) at each end.    The supporting substrate has a hetero-lamellar film comprising the complex formula; -L-[(YO3-Z-Y2O3)MeY]k.k^*p(Xq-)    where L forms a link, Y1 and Y2 are phosphorus or arsenic, Z is a divalent group which forms a stable reduced and oxidised form, X is an anion,    MeY is Me1nWm, where Me1 is a divalent, trivalent or tetravalent metal of group III, IVA or IVB having an atomic number of 21 or a lanthanide; W is an anion, n is 1, 2, or 3; m is 0, 1, 2, 3, or 4; k ranges from 1 to 250; p has a value from 0 to 3 and q is the charge on X. Each complex is bound to the substrate through L.    Each layer of parallel pillars is separated by a layer of a group (IVA), (IVB), (IIIA) or (IIIB) metal or a lanthanide (18). Particles of one or more group (VIII) metal at zero valence is trapped within each layer of the complex.    USE -   The complexes are useful for the conversion and storage of solar energy, for production of photocurrents and as catalysts for reduction reactions e.g. for hydrogen peroxide from hydrogen and oxygen gasses, hydrogen gas from water and reduction of ketones to form alcohols.