Synthesis and photophysical properties of five-membered ring pi-conjugated materials based on bisthiazol-2-yl-amine and their metal complexation studies
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- Synthesis and photophysical properties of five-membered ring pi-conjugated materials based on bisthiazol-2-yl-amine and their metal complexation studies
- Lee, Junghoon; Kim, Jonggi; Kim, Gyoungsik; Yang, Changduk
- Bisthiazol-2-yl-amine; Conjugated materials; Donor-acceptor molecules; Metal complexes; Polythiazoles
- Issue Date
- PERGAMON-ELSEVIER SCIENCE LTD
- TETRAHEDRON, v.66, no.48, pp.9440 - 9444
- Poly(5,5'-(2-hexyldecyl)-bisthiazol-2-yl-amine) (PBTA) is prepared by nickel(0) mediated Yamamoto-type coupling. The photoluminescence (PL) spectrum of PBTA in THF solution displays pure blue emission with a peak centered at 444 nm without any shoulder peaks and the HOMO and LUMO values for PBTA are estimated to be 5.11 and 2.90 eV, respectively. In addition, we have synthesized a novel bisthiazol-2-yl-amine (BTA)-cored donor acceptor (D A) chromophore system, namely 5-(4-(diphenylamino)phenyl)-N-(5-(4-(diphenylamino)phenyl)thiazol-2-yl)-N-octylthiazol-2-amine (2-TPA-BTA) in which the electron-donating (D) moiety is triphenylamine group and the electron-withdrawing (A) unit is thiazole group. Furthermore, in this report, we present the complexation studies of both the BTA and 2-TPA-BTA chromophores with Cu(II) and Pd(II), respectively. The crystal structures are established by single-crystal X-ray diffraction analysis. These studies not only provide the general photophysical principles of the materials based on BTA moiety but also encourage progress toward realizing the full potential of its hybrid metal organic frameworks.
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