NOVELTY - Preparing soluble substituted phthalocyanine-carbon nanotube composite photosensitive material, comprises e.g.: (a) obtaining carbon nanotubes with carboxy group; (b) obtaining chlorinated carbon nanotubes; (c) obtaining alkynyl-modified carbon nanotubes obtaining a light yellow 4-azido-o-phenylenedinitrile; (e) obtaining carbon nanotube material containing 4-o-phenylenedinitrile on the surface; (f) obtaining the soluble substituted phthalocyanine-carbon nanotube composite material; (g) obtaining solution of above material; and (h) coating obtained material solution on a conductive substrate.    USE - The composite photosensitive material is useful for conductive material, solar battery material, photoconductive material and photoelectric conversion material.    ADVANTAGE - The method: has mild reaction condition, quick reaction speed and high composite efficiency in comparison with the ordinary esterification method and amide method; produces substituted phthalocyanine-carbon nanotube composite material, which is an environmentally-friendly high-performance chemical product with improved dispersion uniformity and storage stability, high photosensitivity, compatibility, thermostability, excellent solubility and photoelectric properties.    DETAILED DESCRIPTION - Preparing soluble substituted phthalocyanine-carbon nanotube composite photosensitive material, comprises: (a) adding 100-1000 mg of multi-walled carbon nanotubes into 50-300 ml of mixed strong acid solution composed of concentrated sulfuric acid and concentrated nitric acid, performing ultrasonic treatment for 3-12 hours, pouring into deionized water, allowing to stand for more than 12 hours, filtering and washing with water until neutral, vacuum drying to obtain carbon nanotubes with carboxy group; (b) placing 80-800 mg of the above carbon nanotubes with carboxy group in excess thionyl chloride under nitrogen atmosphere, refluxing for 12-72 hours, after completing the reaction, performing reduced pressure distillation to eliminate excess thionyl chloride, vacuum drying to obtain chlorinated carbon nanotubes; (c) dispersing 15-100 mg of the above chlorinated carbon nanotubes in 10-50 ml of N-methylpyrrolidone, performing ultrasound for 10-30 minutes, then adding 0.9-6.3 g of 4-(3-methylsilyl ethynyl)aniline and 0.6-4.5 ml of amyl nitrite, under nitrogen atmosphere at 50-90 degrees C, reacting continuously for 24-48 hours, after cooling to 25 degrees C, pouring into 50-200 ml of ethanol to precipitate, centrifuging and filtering the mixture, washing with tetrahydrofuran and dichloromethane and then vacuum drying, dispersing the obtained carbon nanotubes in 10-50 ml of N-methylpyrrolidone again, adding 1-5 ml of tetrabutylammonium fluoride in tetrahydrofuran with a concentration of 2 mol/l, continuing to stir for 1-4 hours at normal temperature, then pouring the solution into 50-200 ml of ethanol to precipitate and centrifuge, washing with tetrahydrofuran and dichloromethane, vacuum drying for 6-36 hours at 30-80 degrees C to obtain alkynyl-modified carbon nanotubes; (d) weighing 0.2-3.2 g of 4-bromo-phthalonitrile and 0.15-1.5 g of sodium azide, dissolving in a flask containing 10-100 ml of tetrahydrofuran and 1-10 ml of water, refluxing and stirring for 2-8 hours at 50-70 degrees C, after completing the reaction, cooling to 25 degrees C, extracting the reaction solution with dichloromethane, drying and dehydrating with anhydrous magnesium sulfate, filtering and vacuum drying to obtain a light yellow 4-azido-phthalonitrile; (e) adding 5-50 mg of the above alkynyl-modified carbon nanotubes into a flask containing 10-100 ml of N-methylpyrrolidone, then weighing 2-20 mg of 4-azido-o-phenylenedinitrile and adding into the flask, adding 2-20 mg of cuprous iodide and 40-400 mg of 1,8-diazabicyclo(5.4.0)undecene-7-ene, stirring under nitrogen atmosphere at 70 degrees C and reacting for 24-72 hours, after cooling to 25 degrees C, pouring into 50-500 ml of ethanol to precipitate, centrifuging and separating, washing with tetrahydrofuran and dichloromethane for multiple times (generally 3-5 times), vacuum drying to obtain carbon nanotube material containing 4-phthalonitrile on the surface; (f) dispersing 5-50 mg of the above carbon nanotube material containing 4-o-phenylenedinitrile on the surface in 10-100 ml of n-amyl alcohol, adding 10-100 ml of substituted o-phenylenedinitrile, 1-10 mg of anhydrous zinc chloride and 20-200 mg of 1,8-diazabicyclo(5.4.0)undecene-7-ene, stirring for 24-72 hours under nitrogen atmosphere at 90-150 degrees C, after cooling to 25 degrees C, pouring into 50-500 ml of ethanol to precipitate, centrifuging and separating, washing with tetrahydrofuran and dichloromethane for multiple times (generally 3-5 times) and vacuum drying for 6-36 hours at 20-80 degrees C to obtain the soluble substituted phthalocyanine-carbon nanotube composite material; (g) dispersing 5-50 mg of the above soluble substituted phthalocyanine-carbon nanotube composite material in tetrahydrofuran, where the concentration of the composite material is 1-10 mg/ml, performing ultrasound for 1-12 hours at 25 degrees C under ultrasonic condition to obtain the soluble substituted phthalocyanine-carbon nanotube composite material solution; and (h) coating the above soluble substituted phthalocyanine-carbon nanotube composite material on a conductive substrate with a spin-coating method, where the spin-coating speed is 1000-3000 revolutions/minute/second, the baking temperature is 35-120 degrees C, the baking time is 0.5-6 hours and the thickness of the dry soluble substituted phthalocyanine-carbon nanotube composite photosensitive coating is 10-50 mu m.