Near-infrared absorption of a benzothiophene-appended triphenylamine radical cation: A novel molecular design of NIR-II dye

Near-infrared absorption of a benzothiophene-appended triphenylamine radical cation: A novel molecular design of NIR-II dye
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苯并噻吩附加的三苯胺自由基阳离子的近红外吸收:NIR-II 染料的新颖分子设计

DOI:
10.1016/j.dyepig.2021.109929
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发表时间:
2022
期刊:
影响因子:
4.5
通讯作者:
Kashiwagi Yukiyasu
Kashiwagi Yukiyasu
中科院分区:
材料科学2区
文献类型:
--
作者:
Yano Masafumi;Inada Yoshinori;Hayashi Yuki;Nakai Misaki;Mitsudo Koichi;Kashiwagi Yukiyasu

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设计并成功地合成了一种含三个苯并噻吩环的三苯胺,产率为87%。该化合物在386 nm处有吸收,在442 nm附近有蓝光发射,荧光量子产率为0.57。该化合物具有较高的热稳定性。通过单电子氧化得到的自由基阳离子在溶液中是稳定的,并在近红外-II区有明显的吸收(λmax=11213 nm)。密度泛函理论计算证实了实验数据。
A triphenylamine with three benzothiophene rings was designed and successfully synthesized in 87% yield. The compound showed absorption at 386 nm and blue emission at around 442 nm, with a fluorescence quantum yield of 0.57. The compound showed high thermostability. The radical cation obtained by one-electron oxidation was stable in solution and showed a significant absorption in the NIR-II region (λmax= 1213 nm). DFT calculations confirmed the experimental data.
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