TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The metal is magnesium, aluminum, silicon, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, gallium, germanium, ruthenium, palladium, tin, osmium, platinum, gold, cerium, neodymium, europium and/or lutetium.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The branched alkyl chain is of formulae (I) and (II). The terminal polymerization portion of alkyl chain is terminal olefin (-(CH2)n-CH=CH2), terminal dienyl (-(CH2)n-CH=CH-CH=CH2), terminal acrylic ester (-(CH2)n-OC(=O)CH=CH2), terminal methacrylic ester (-(CH2)n-OC(=O)C(CH3)=CH2) and/or terminal epoxy-group (-(CH2)n-CHOCH2). The oligo siloxane chain is -(Si-Ra(Rb))n1-H, -(Si-Ra(Rb))n1-SiH3 and/or -(Si-Ra(Rb))n1-Si(CH3)3. The fluorocarbon chain is -(CF2)n2. The oligo ethylene glycol chain is -(O-CH2-CH2)n3-OH or -(O-CH2-CH2)n3-OCH3. The pi -conjugated molecule has absorption in ultraviolet or visible region. The pi -conjugated molecule is porphyrin of formulae (III) and (IV), phthalocyanine, oligo (p-) phenylene vinylene of formulae (VII)-(IX), oligo (p-) phenylene ethynylene, perylene, perylene bisimide, fluorene of formula (XI), anthracene of formulae (V) and (VI), tetracene, pentacene, pyrene, azobenzene of formula (XIII), stilbene of formula (XII), diallyl ethene, oligophenylene, oligothiophene and/or oxal-type dye. The pi -conjugated molecule is coordinated with metal.R1=4C or more optionally substituted alkyl;R2=6C or more optionally substituted alkyl, preferably -CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3 (when R1 is -CH2-CH2-CH2-CH2-CH2-CH3), -CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3 (when R1 is -CH2-CH2-CH2-CH2-CH2-CH2-CH-2-CH3), -CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3 (when R1 is -CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3), -CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3 (when R1 is -CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3), -CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3 (when R1 is -CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3), -CH2-CH2-CH2-CH2-CH(-CH3)-CH2-CH2-CH3 (when R1 is -CH2-CH2-CH(-CH3)-CH2-CH2-CH2) or -CH2-CH2-CH(-CH3)-CH2-C(-CH3)2-CH2 (when R1 is -CH-CH2-C(-CH3)2-CH3);S'=substituent chosen from phenyl, benzyl, methylene, amide, ester, ether, thioether or urea;n=6-14;n1=2-10;Ra,Rb=H or CH3;n2=5-9;n3=2-10;A= group of formula (A)H=group of formula (i);andJ=group of formula (ii).