Effect of interchain separation on the photoinduced absorption spectra of polycarbazolyldiacetylenes

TY - JOUR

T1 - Effect of interchain separation on the photoinduced absorption spectra of polycarbazolyldiacetylenes

AU - Comoretto, D.

AU - Moggio, I.

AU - Dell'Erba, C.

AU - Cuniberti, C.

AU - Musso, G. F.

AU - Dellepiane, G.

AU - Rossi, L.

AU - Rossi, Laura

AU - Giardini, M. E.

AU - Borghesi, A.

N1 - © 1996 American Physical Society

PY - 1996/12/15

Y1 - 1996/12/15

N2 - The photoinduced absorption spectra of a novel polycarbazolyldiacetylene with long aliphatic chains on the carbazolyl side groups are measured and compared with those of the unsubstituted polyDCHD. The two polymers in the blue form exhibit very similar electronic absorption spectra and Raman frequencies. This fact indicates that the conjugation length of the polydiacetylene backbone is not too affected by the long substituents. In contrast, the near steady-state photoinduced absorption spectra show that different photogeneration mechanisms are involved in the two polymers. This result can be ascribed to the role played by the interchain distance in the dynamics of the relaxation processes in polydiacetylenes.

AB - The photoinduced absorption spectra of a novel polycarbazolyldiacetylene with long aliphatic chains on the carbazolyl side groups are measured and compared with those of the unsubstituted polyDCHD. The two polymers in the blue form exhibit very similar electronic absorption spectra and Raman frequencies. This fact indicates that the conjugation length of the polydiacetylene backbone is not too affected by the long substituents. In contrast, the near steady-state photoinduced absorption spectra show that different photogeneration mechanisms are involved in the two polymers. This result can be ascribed to the role played by the interchain distance in the dynamics of the relaxation processes in polydiacetylenes.

KW - polycarbazolyldiacetylenes

KW - photoinduced absorption

U2 - 10.1103/PhysRevB.54.16357

DO - 10.1103/PhysRevB.54.16357

M3 - Article

SN - 2469-9950

VL - 54

SP - 16357

EP - 16360

JO - Physical Review B

JF - Physical Review B

IS - 23

ER -