Synthesis and Optical Properties of 3D Compounds with Core and D-π-A Dipolar Group

doi:10.3969/j.issn.0251-0790.2012.01.014

Abstract

Abstract: Four novel 3D compounds with core and donor-π-acceptor(D-π-A) ambipolar group were synthesized via Suzuki and Friedel-Crafts copolycondensation reaction and charactered by NMR, MS, TGA, DSC and absorption and emission spectrometry. The results indicated that introduction of the cores could efficiently retard the crystallization tendencies of the D-π-A structure and gave the materials completely amorphous morphological structure. As a result of the coexistence of the electron acceptor and donor, these compounds diaplayed reversible electrochemical behavior. All the compounds showed better stability of thermal and electrochemical. The mitigation of aggregation in solid-state were observed by comparing the optical properties of the films between compounds 1—3 and linear counterparts. Four compounds exhibited bathochromism in different solvents due to the intromolecular charge transfer(ICT). With the changing of the polarity of solvent and the strength of the electron acceptor, the optical properties of compounds could be modified, and the PL intensity of compounds was also tailored with the difference of solvent.

Key words: Dendrimer, Ambipolar, Solvatochromism, Solvatokinetic effect

CLC Number:

TrendMD:

HU Bin, OUYANG Mi, ZHANG Yu-Jian, XIANG Wen-Qin, ZHANG Cheng. Synthesis and Optical Properties of 3D Compounds with Core and D-π-A Dipolar Group[J]. Chem. J. Chinese Universities, 2012, 33(01): 82.

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