2654-52-6Relevant academic research and scientific papers
Benzodipyrrolenine-based biscyanine dyes: Synthesis, molecular structure and spectroscopic characterization
Klochko, Oleksiy P.,Fedyunyayeva, Iryna A.,Khabuseva, Sania U.,Semenova, Olga M.,Terpetschnig, Ewald A.,Patsenker, Leonid D.
, p. 7 - 15 (2010)
A novel method of synthesizing long-wavelength absorbing and emitting bis-trimethine dyes that consists of condensing benzodipyrrolenine dialdehyde with quaternized heterocyclic CH-acidic compounds was used to prepare a series of biscyanines. The new meth
Preparation, structure analysis and performance characterization of a novel organic second-order nonlinear optical crystal DOBT
Wang, Qibo,Wang, Tianhua,Xu, Kai,Li, Jinghui,Cao, Lifeng,Zhong, Degao,Teng, Bing,Tang, Jie
, (2021/12/02)
A novel ionic organic nonlinear optical crystal 2-(3,4-dimethoxystyryl)- 3-methylbenzothiazolium-4-methylbenzenesulfonate (DOBT) was synthesized and grown by slow cooling method. Single crystal X-ray diffraction was used to determine the composition and s
New hexamethine indothia-cyanines: Synthesis and photophysical properties as well as both antitumor activity and imaging
Deng, Wenting,Wang, Lanying,Wang, Yunxia,Zhao, Junlong,Jia, Hongliang
, (2021/02/09)
Six new hexamethine indothia-cyanines were successfully synthesized by integrating a benzothiazole or naphthothiazole and indole unit using isophorone. These cyanines exhibited strong absorption and near-infrared fluorescence with a large stokes shift, and showed excellent stability. And they were tested as novel anticancer agents in vitro against human breast cancer cells (MCF-7), and indothia-cyanine D1 could efficiently reduce MCF-7 viability and exhibited no toxicity against normal human immortalized epidermal cells (Hacat). Cyanine D1 was further studied for its antitumor activity in mice. The in vivo result indicated that D1 could significantly inhibit the growth of breast tumors from tumor-bearing mice, and had no effect on the normal functions of the vital organs in vivo. In addition, D1 could stain MCF-7 cells and emitted bright red fluorescence, being a potential functional agent with both imaging and antitumor activity.
Development of novel rhodacyanine-based heat shock protein 70 inhibitors
Chang, Chih-Shiang,Chen, Yeh,Chu, Po-Chen,Gao, Jing-Yan,Kumar, Vathan,Lee, Der-Yen,Wu, Yu-Chieh
, p. 5431 - 5446 (2021/09/13)
Background: A growing body of evidence suggests that Hsp70, which is over-expressed in human breast tumors, plays a role in tumorigenesis and tumor progression in breast cancer as well as in its aggressive phenotypes. Hsp70 constitutes a potential therape
Synthesis and antileishmanial activity of fluorinated rhodacyanine analogues: The ‘fluorine-walk’ analysis
Lasing, Thitiya,Phumee, Atchara,Siriyasatien, Padet,Chitchak, Kantima,Vanalabhpatana, Parichatr,Mak, Kit-Kay,Hee Ng, Chew,Vilaivan, Tirayut,Khotavivattana, Tanatorn
supporting information, (2019/12/09)
In a search for potent antileishmanial drug candidates, eighteen rhodacyanine analogues bearing fluorine or perfluoroalkyl substituents at various positions were synthesized. These compounds were tested for their inhibitory activities against Leishmania martiniquensis and L. orientalis. This ‘fluorine-walk’ analysis revealed that the introduction of fluorine atom at C-5, 6, 5′, or 6′ on the benzothiazole units led to significant enhancement of the activity, correlating with the less negative reduction potentials of the fluorinated analogues confirmed by the electrochemical study. On the other hand, [sbnd]CF3 and [sbnd]OCF3 groups were found to have detrimental effects, which agreed with the poor aqueous solubility predicted by the in silico ADMET analysis. In addition, some of the analogues including the difluorinated species showed exceptional potency against the promastigote and axenic amastigote stages (IC50 = 40–85 nM), with the activities surpassing both amphotericin B and miltefosine.
Compound, preparation method thereof, non-linear optical crystal, preparation method of crystal and application of crystal
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Paragraph 0074; 0075; 0076, (2019/05/02)
The invention belongs to the technical field of non-linear optical crystals, provides a C25H25NO4S2 compound and a preparation method thereof, and further provides a C25H25NO4S2 non-linear optical crystal and three preparation methods thereof. The C25H25N
Rational structural design of benzothiazolium-based crystal HDB-T with high nonlinearity and efficient terahertz-wave generation
Shi, Jingkai,Liang, Fei,He, Yixin,Zhang, Xinyuan,Lin, Zheshuai,Xu, Degang,Hu, Zhanggui,Yao, Jianquan,Wu, Yicheng
supporting information, p. 7950 - 7953 (2019/07/10)
A new promising nonlinear optical crystal C25H25NO4S2 (HDB-T, P21 space group) exhibits significant macroscopic second-order optical nonlinearity about 1.5 times larger than that of the benchmark OH1
Nonlinear optical ionic crystals having new structure
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Paragraph 0079-0081, (2019/01/25)
The present invention provides a nonlinear optical crystal based on a novel non-linear optical ionic derivative comprising a benzothiazolium cation and a counter anion. A benzothiazolium structure has stronger electron-withdrawing properties than pyridini
Photophysics of cyanine dyes on surfaces: Laser-induced photoisomer emission of 3,3′-dialkylthiacarbocyanines adsorbed on microcrystalline cellulose
Oliveira, Anabela S.,Almeida, Paulo,Ferreira, Luis Filipe Vieira
, p. 459 - 473 (2007/10/03)
The photophysics of three thiacarbocyanine dyes, 3,3′-dimethylthiacarbocyanine iodide (DMTCC), 3,3′-diethylthiacarbocyanine iodide (DETCC), and 3,3′-dipropylthiacarbocyanine iodide (DPTCC) was studied when adsorbed on microcrystalline cellulose in the concentration range from 5.0 · 10-4 to 10.0 μmol g-1. Using ground-state diffuse reflectance absorption technique, only H aggregate formation was detected for all the probes. The amount of aggregate formed depends on the hydration degree of the sample, always decreasing with sample dryness. The fluorescence quantum yields for all the adsorbed dyes are one order of magnitude higher than those observed in nonviscous solvents, being 0.98 for DMTCC, 0.96 for DETCC, and 0.63 for DPTCC. Laser-induced fluorescence emissions were recorded (using an intensified-charge-coupled-device detection system) as a function of the laser power, showing that for dry concentrated samples irradiated with high laser intensity, a second fluorescence emission band (bathochromically shifted relative to the monomer emission) was detected. This emission shows a supralinear dependence on laser power. The new emissions here detected arise from fluorescent photoisomers formed via singlet monomers, by a two-photon absorption process.
Heterocyclic compounds containing 4,6-bis-trichloromethyl-s-triazin-2-ly groups
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, (2008/06/13)
Compounds of general formula I are disclosed STR1 wherein L denotes a hydrogen atom, an aryl radial or a substituent of the formula STR2 M denotes an alkylene radical or alkenylene radical or a 1,2-arylene radical, Q denotes a sulfur, selenium or oxygen atom, a dialkylmethylene group, an alken 1,2-ylene radical, a 1,2-phenylene radical or an N-R1 group, denotes an alkyl, aralkyl, aryloxyalkyl or alkoxyalkyl radical, R2 and R3 denote a hydrogen atom or a 4,6-bis-trichloromethyl-s-triazin-2-yl group, and n is 0 or 1. The compounds are suitable for use as photoinitiators in photosensitive systems that are induced to reaction by free radicals or acid cations. The compounds are characterized by high sensitivity in the visible spectral region.
