| 摘要 |
A compound of the formula wherein R1, R2, R3, and R4 can be the same or different, and wherein each of R1, R2, R3, and R4 are independently selected from (i) hydrogen, (ii) an alkyl group, (iii) an aryl group, (iv) an arylalkyl group, (v) an alkylaryl group, (vi) an alkoxy group, (vii) an aryloxy group, (viii) an arylalkyloxy group, (ix) an alkylaryloxy group; and wherein R5 is (i) an alkylene group, (ii) an arylene group, which can be substituted or unsubstituted arylene, and wherein hetero atoms may optionally be present in the arylene group, (iii) an arylalkylene group, or (iv) an alkylarylene group. Further, a process for preparing a charge transport compound comprises contacting a hydroxy-functionalized triarylamine with a dihalide in an alkaline-water solution at room temperature; wherein the raw material for the dihalide comprises a purified or recovered halogen-organic solvent-containing waste stream. |
