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pi-Stacked and unstacked aggregate formation of 3,3 '-diethylthiatricarbocyanine iodide, a near-infrared dye
| Title: | pi-Stacked and unstacked aggregate formation of 3,3 '-diethylthiatricarbocyanine iodide, a near-infrared dye |
| Authors: | Wang, Yue Browse this author | | Wang, Rong Browse this author | | Imai, Yoshitane Browse this author | | Hara, Nobuyuki Browse this author | | Wan, Xinhua Browse this author | | Nakano, Tamaki Browse this author →KAKEN DB |
| Issue Date: | 21-Sep-2018 |
| Publisher: | Royal Society of Chemistry |
| Journal Title: | New journal of chemistry |
| Volume: | 42 |
| Issue: | 18 |
| Start Page: | 14713 |
| End Page: | 14716 |
| Publisher DOI: | 10.1039/c8nj02851f |
| Abstract: | The absorbance and fluorescence spectra of 3,3-diethylthiatricarbocyanine iodide (DTCI), a near-infrared dye, were measured in methanol and water at different concentrations. DTCI exhibited distinctive monomer and excimer (dimer) fluorescence emission bands on photo excitation in the two solvents. The monomer emission band at around 600-700 nm is unprecedented, and the dimeric nature of the typical emission band at around 750-850 nm has not been recognized in solution. In the ground state, DTCI is proposed to form -stacked and unstacked aggregates in methanol and water, respectively, at higher concentrations. The proposed unstacked aggregates in water may be of high molar mass leading to a short relaxation time in NMR analysis, which did not show clear signals. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/75496 |
| Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 中野 環
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