84-83-3Relevant articles and documents
Synthesis and characterization of a novel indoline based nonlinear optical chromophore with excellent electro-optic activity and high thermal stability by modifying the π-conjugated bridges
Hu, Chaolei,Chen, Zhuo,Xiao, Hongyan,Zhen, Zhen,Liu, Xinhou,Bo, Shuhui
, p. 5111 - 5118 (2017)
Two novel second order nonlinear optical (NLO) chromophores based on indoline donors and tricyanofuran (TCF) acceptors linked together via modified polyene π-conjugation bridges have been synthesized in good overall yields and systematically characterized. Thermal stability, optical property and electro-optic property were measured to investigate the effects of the introduced rigid benzene derivative steric hindrance group on the bridge. Besides, density functional theory (DFT) was used to calculate the HOMO-LUMO energy gaps and first-order hyperpolarizability (β) of these chromophores. After introducing the benzene derivative steric hindrance group into the bridge, chromophore CLH-2 showed very good thermal stability with a decomposition temperature of 250 °C, which was 83 °C higher than chromophore CLH-1 without the isolation group on the bridge. In electro-optic activity, the introduction of rigid steric hindrance groups can effectively reduce dipole-dipole interactions to translate the relatively small β values into bulk high EO activities. By doping chromophores CLH-1 and CLH-2 with a high loading of 45 wt% in APC, EO coefficients (r33) of up to 63 and 102 pm V-1 at 1310 nm can be achieved, respectively. The r33 value of the new chromophore CLH-2 was about 1.6 times that of chromophore CLH-1. The high r33 value, good thermal stability and high yield suggest the promising applications of the new chromophore in nonlinear optical areas.
Development and applications of a near-infrared dye-benzylguanine conjugate to specifically label SNAP-tagged proteins
Song, Xinbo,Bian, Hui,Wang, Chao,Hu, Mingyu,Li, Ning,Xiao, Yi
, p. 8091 - 8101 (2017/10/13)
Near-infrared (NIR) fluorescent probes are advantageous over visible ones, for they can avoid the interference from the short-wavelength background emission in biological systems. However, there are a very limited number of NIR probes that can specifically label target proteins in living cells. In this work, a series of long-wavelength dyes (N-NIR, S-NIR, and K-NIR) analogous to the novel Changsha NIR family are synthesized conveniently through a new approach that is different from the previously reported one. These three dyes have similar conjugation structures but exhibit tunable photophysical properties. N-NIR and S-NIR have large extinction coefficients over 100000, and high fluorescence quantum yields. Although NIR absorption and emission of K-NIR are inferior to the former two, it emits in a much longer wavelength region. And all the three dyes can easily pass through the cell membranes to obtain the high-resolution NIR fluorescence images. Furthermore, N-NIR is chosen as the NIR fluorophore to develop a protein-labeling reagent PYBG-D, since it demonstrates the highest fluorescence quantum yield of up to 0.4 (in methanol). PYBG-D is efficiently synthesized through Sonogashira coupling between bromo-substituted N-NIR and alkyne-substituted benzylguanine (PYBG). The conjugate PYBG-D proves to be a specific and efficient label for O6-alkylguanine-DNA alkyltransferase (SNAP-tag) that fused to target proteins in living cells, which contributes to high resolution NIR fluorescence images under a laser confocal microscope.
INDOLE-BASED COMPOUND, COLORANT COMPOSITION COMPRISING THE SAME AND RESIN COMPOSITION COMPRISING THE SAME
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Paragraph 0166; 0174-0176, (2016/11/17)
Disclosed in the present invention are a novel indole-based compound, a colorant composition comprising the same, and a resin composition comprising the same. Provided in an embodiment of the present invention is the compound represented by chemical formula 1. According to an embodiment of the present invention, the compound can be acted as a dye, and can be used as a material of a color filter. Specifically, the resin composition comprising the compound has a high color reproduction rate, high luminance, a high contrast ratio, etc.(AA) Comparative example 1(BB) Example 1(CC) Example 2(DD) Example 3(EE) Example 4(FF) Example 5(GG) Example 7(HH) Example 8(II) Example 9(JJ) Example 10COPYRIGHT KIPO 2016
