【摘 要】
：
A diquinoxalinopyrene(DQP) derivative and the corresponding oligomers(PDQPs) with Mn of ca. 3300, 4200,5600, and 7300 have been synthesized. It is found that th
【机 构】
：
College of Materials Science and Engineering, South China University of Technology,Ministry of Educa
【出 处】
：
Chinese Journal of Polymer Science
论文部分内容阅读
A diquinoxalinopyrene(DQP) derivative and the corresponding oligomers(PDQPs) with Mn of ca. 3300, 4200,5600, and 7300 have been synthesized. It is found that the band gaps and highest occupied molecular orbital(HOMO)/lowest unoccupied molecular orbital(LUMO) levels between DQP and its homopolymers only have a slight difference, implying a limited conjugation extension achieved from unimer to heptamer. The DFT calculation is in accordance with the experimental results. It reveals that the nodal planes are across the 2,11-positions in the LUMO and/or HOMO of DQP,dimer and trimer, which can be used to explain this special phenomenon.
A diquinoxalinopyrene (DQP) derivative and the corresponding oligomers (PDQPs) with Mn of ca. 3300, 4200, 5600, and 7300 have been synthesized. It is found that the band gaps and highest occupied molecular orbital (HOMO) / lowest unoccupied molecular orbital (LUMO) levels between DQP and its homopolymers only have a slight difference, implying a limited conjugation extension achieved from unimer to heptamer. The DFT calculation is in accordance with the experimental results. It reveals that the nodal planes are across the 2,11- in the LUMO and / or HOMO of DQP, dimer and trimer, which can be used to explain this special phenomenon.
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