Synthesis and Optical Properties of Triphenylene-Based Donor-Donor and Donor-Acceptor Conjugated Polymers: A Comparative Study

Figure 6

UV-Vis absorption spectra of P1 and P2 as dilute solutions in different solvents. Note that P2 has poor solubility in hexane, and the upper, clear portion of a saturated P2 solution in hexane was collected and used for measurement. Also, note that due to the very poor solubility of P1 and P2 in DMF and the insolubility of P1 and P2 in DMSO, these solutions were prepared by adding a very small amount of concentrated CHCl₃ stock solution of P1 or P2 to respective solvents.