TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The adduct comprises different types of transitional metal coordination complexes. The adduct has high degree of solubility in organic or aqueous solvents. The adduct is a hexacoordinate structure. The adduct has a solubility of greater than 250 mg/l in dimethylsulfoxide (DMSO). The adduct has a solubility of greater than 75 mg/l in tetrahydrofuran (THF) or dimethylformamide (DMF). Preferred Components: The carbon nanotube is a semi-conductor, a metal, single-walled, or multi-walled. The diameter of the single-walled carbon nanotube is 0.7-1.5 nm. The diameter of the multi-walled carbon nanotube is 3-30 nm. The at least one end of the carbon nanotube is open. The carbon nanotube-metal adduct dispersion (50-99 wt.%) comprises nanotubes. The average second diameter is 10-80% of the average first diameter. The exfoliated bundles are 15-20 nm in diameter. The bundles are exfoliated to the single nanotube. The physical property is electronic property, an electrical property, an electromechanical property, an optical property, a chemical property, a mechanical property, a structural property, a thermal property and/or thermoelectric property. The electrical property is conductance, resistivity, carrier mobility, a transport property, permittivity, and a charge transfer property. The modification of conductance is a tunability in conductance. The structural property is elasticity and ease of composite formation. The transitional metal is in the form of a nitrate, a halide, or a salt. The transitional metal coordination complex is a Wilkinson's complex. The rhodium of the Wilkinson's complex has an oxidation state of three. The nanotube dispersion comprises nanotubes in DMSO, THF or DMF. The solution comprises a mixture of different transitional metal coordination complexes. Preferred Method: The method further comprises precipitating the adduct from the solution.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The covalent linkage is a coordinative linkage. The oxygen moiety is a carboxyl group, a hydroxyl group, an aldehyde group or a ketone group. The organic solvent is DMSO, THF, DMF, methanol, ethanol, 2-propanol, acetone, o-dichlorobenzene, ethyl acetate, or benzene. EXAMPLE - Sonicated nanotube dispersion in dimethylsulfoxide (DMSO) was added drop wise to 10 mM solution of Wilkinson's catalyst (10 ml) in DMSO solution, under vigorous stirring in an inert argon atmosphere. The reaction mixture was stirred at 55-60 degrees C for a period of 80 hours, where a substantial portion of the nanotubes dissolve into a visually, non scattering solution. The reaction mixture was filtered over a 0.2 mu m nylon membrane, after which undispersed chunks of unreacted bucky paper were removed, and the remaining solid was then washed with DMSO, ethanol, and water. The dissolved tubes in solution was salted or precipitated out by adding a saturated aqueous sodium chlorides solution. Then, the dissolved tubes were purified and washed to give single-walled nanotubes-Wilkinson's adduct.