TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): Preparation of 1,7-bis (3,3',4,4'-dialkoxybenzene)-N,N'-di (alkyl) imide (I) involves reacting bromo alkylene amide compound of formula (II), and 3,4-alkoxy substituted phenyl boronic acid of formula (III) by Suzuki coupling reaction to obtain aryl-substituted perylene imide compound or formula (IV), oxidizing to obtain dichloro-dicyano-benzoquinone (DDQ) of formula (V). Preferred Processes: Preparation of dibenzo compound (I) involves mixing toluene, 1,7-dibromo-perylene bis-imide, and tetrakis(triphenylphosphine)palladium (Pd(PPh3)4) catalyst in round bottom flask, adding 2 M sodium carbonate (Na2CO3), methanol (CH3OH), and 3,4-dialkoxy phenylboronic acid under nitrogen atmosphere, stirring at 70 degrees C for 48 hours, cooling, adding ammonia (NH3) and 2 N sodium carbonate to stop reaction, adding chloroform to extract, washing, drying over anhydrous sodium sulfate (Na2SO4), filtering, adding methanol to filtrate, heating to obtain 1,7-bis (3',4'-alkoxyphenyl)-N,N'-bis (alkyl)-3,4:9,10- perylene imide dark blue powder, dissolving in dichloromethane and methanesulfonic acid solution, cooling to 0 degrees C, adding dichloro dicyanobenzoquinone solution for 3 times every 5 minutes, monitoring progress of reaction by thin-layer chromatography (TLC), reacting by oxidative dehydrogenation for 30 minutes, adding methanol, precipitating, filtering, purifying by short column chromatography using silica gel, and adding recrystallizing to obtain 1,7-bis (3,3',4,4'-dialkoxybenzene)-N,N'-di (alkyl) imide red solid. Preferred Definitions:    Alkyl=1-18C straight-chain, or branched primary alkyl;    Branched primary alkyl=2-CH3R11, 2-C2H5R12, 2- C3H7R13, 2-C4H9R14, 2-C5H11R15, 2-C6H13R16, 2-C7H15R17, 2-C8H17R18, 2-C9H19R19, 2-C10H21R20, 1-CH3R21, 1-C2H5R11, 1-C3H7R12, 1-C4H9R13, 1-C5H11R14, 1-C6H13H15, 1-C7H15R16, 1-C8H17R17, 1-C9H19R18, and 1-C10H21R19;    R11=3-18C straight chain alkyl;    R12=4-18C straight chain alkyl;    R13=5-18C straight chain alkyl;    R14=6-18C straight chain alkyl;    R15=7-18C straight chain alkyl;    R16=8-18C straight chain alkyl;    R17=9-18C straight chain alkyl;    R18=10-18C straight chain alkyl;    R19=11-18C straight chain alkyl;    R20=12-18C straight chain alkyl; and    R21=2-18C straight chain alkyl.