pi-Stacked and unstacked aggregate formation of 3,3 '-diethylthiatricarbocyanine iodide, a near-infrared dye

Wang, Yue; Wang, Rong; Imai, Yoshitane et al.

New journal of chemistry, 2018, 42(18), 14713-14716

Permalink : https://hdl.handle.net/2115/75496

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アクセス権
open access
URI
https://hdl.handle.net/2115/75496
タイトル
pi-Stacked and unstacked aggregate formation of 3,3 '-diethylthiatricarbocyanine iodide, a near-infrared dye
その他のタイトル
π-Stacked and unstacked aggregate formation of 3,3′-diethylthiatricarbocyanine iodide, a near-infrared dye
著者
Wang, Yue ; Wang, Rong ; Imai, Yoshitane ; Hara, Nobuyuki ; Wan, Xinhua ; Nakano, Tamaki
著者名
Wang, Yue
著者名
Wang, Rong
著者名
Imai, Yoshitane
著者名
Hara, Nobuyuki
著者名
Wan, Xinhua
e-Rad_Researcher
40227856
著者名
Nakano, Tamaki
言語
英語
発行日
2018-09-21
出版者
Royal Society of Chemistry
収録物名
New journal of chemistry
巻(号)
42(18)
ページ
14713-14716
抄録
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.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
PISSN
1144-0546
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1039/c8nj02851f