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Three new five-coordinated mercury (II) dyes: Structure and enhanced two-photon absorption |
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| Authors: | Hongping Zhou Feixia ZhouPeng Wu Zheng ZhengZhipeng Yu Yixin ChenYulong Tu Lin KongJieying Wu Yupeng Tian |
| Affiliation: | a Department of Chemistry, Anhui University and Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province, 230039 Hefei, PR China b State Key Laboratory of Crystal Materials, Shandong University, 250100 Jinan, PR China c State Key Laboratory of Coordination Chemistry, Nanjing University, 210093 Nanjing, PR China |
| Abstract: | A new donor-bridge-acceptor (D-π-A) type ligand (L: 4′-(4-[4-(imidazole)styryl]phenyl)-2,2′:6′,2″-terpyridine) with two-photon absorption and coordination ability was designed and synthesized. Self-assembly of the ligand with HgX2 (X = Cl, Br, I) yielded a series of new coordination complexes (Dyes 1-3) with five-coordinated mercury (ΙΙ), which were characterized by single crystal X-ray diffraction determination. Solvent molecules and various weak interactions, including hydrogen bonds (C-H···N, C-H···X) and π-π interactions played significant roles in the final topological structures. Linear and nonlinear optical properties of the ligand and three dyes were described. Experimental results revealed that two-photon absorption cross sections of three dyes are extraordinary stronger than that of ligand. |
| Keywords: | Single crystal Hydrogen bonds π-π interactions Linear absorption Fluorescence Two-photon absorption |
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