115948-29-3Relevant academic research and scientific papers
Photo-crosslinking of a self-assembled coumarin-dipeptide hydrogel
Kim, Se Hye,Sun, Yuan,Kaplan, Jonah A.,Grinstaff, Mark W.,Parquette, Jon R.
, p. 3225 - 3228 (2015)
The self-assembly and photo-crosslinking of a lysine dipeptide functionalized with 7-(diethylamino)-3-coumarin carboxylic acid (7-DAC) is described. Self-assembly of the dipeptide in water and PBS produces a hydrogel comprised of uniform, micrometer length nanofibers. Irradiation of the nanofibers at 365 nm induces dimerization of the coumarin groups, which crosslinks and stabilizes the noncovalent nanofibers and enhances the mechanical properties.
Improvements in the synthesis of a coumaromethacrylate dye
Davis, Matthew C.
, p. 2383 - 2389 (2007)
A new method to prepare a coumaromethacrylate dye has been devised. The older three-step route was shortened to a one-pot, solvent-free step. Copyright Taylor & Francis Group, LLC.
3-carboxylic acid and formyl-derived coumarins as photoinitiators in photo-oxidation or photo-reduction processes for photopolymerization upon visible light: Photocomposite synthesis and 3d printing applications
Dumur, Frédéric,Gigmes, Didier,Graff, Bernadette,Hamieh, Tayssir,Lalevée, Jacques,Noirbent, Guillaume,Rahal, Mahmoud,Toufaily, Joumana
, (2021)
In this paper, nine organic compounds based on the coumarin scaffold and different substituents were synthesized and used as high-performance photoinitiators for free radical pho-topolymerization (FRP) of meth(acrylate) functions under visible light irradiation using LED at 405 nm. In fact, these compounds showed a very high initiation capacity and very good polymerization profiles (both high rate of polymerization (Rp) and final conversion (FC)) using two and three-component photoinitiating systems based on coum/iodonium salt (0.1%/1% w/w) and coum/iodonium salt/amine (0.1%/1%/1% w/w/w), respectively. To demonstrate the efficiency of the initiation of photopolymerization, several techniques were used to study the photophysical and photochemical properties of coumarins, such as: UV-visible absorption spectroscopy, steady-state photolysis, real-time FTIR, and cyclic voltammetry. On the other hand, these compounds were also tested in direct laser write experiments (3D printing). The synthesis of photocomposites based on glass fiber or carbon fiber using an LED conveyor at 385 nm (0.7 W/cm2 ) was also examined.
A FRET-based ratiometric fluorescent and colorimetric probe for the facile detection of organophosphonate nerve agent mimic DCP
Xuan, Weimin,Cao, Yanting,Zhou, Jiahong,Wang, Wei
, p. 10474 - 10476 (2013)
A FRET ratiometric fluorescent probe enabling a fast and highly sensitive response to OP nerve agent mimic DCP within 1 min and with as low as 0.17 ppm concentration detection limit has been developed. Moreover, the probe exhibits noticeable color changes
FeCl3-catalyzed cascade reaction: An efficient approach to functionalized coumarin derivatives
He, Xinwei,Yan, Zhenglei,Hu, Xiaoqian,Zuo, Yin,Jiang, Chang,Jin, Lei,Shang, Yongjia
, p. 1507 - 1514 (2014)
An efficient and environmentally benign synthesis of 3-substituted or 3,4-disubstituted coumarins was accomplished via iron(III) chloride-catalyzed cascade reactions of salicylaldehydes and activated methylene compounds. The reaction preceded cleanly under mild reaction conditions to provide the desired coumarin derivatives in good to excellent yields.
Coumarin-3-carboxylic acid ester derivative preparation method
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Paragraph 0045; 0080-0084, (2017/02/02)
The invention discloses a preparation method for a coumarin-3-carboxylic ester derivative shown as the formula (I) or the formula (II) in the specification. The method comprises the step that under the existence of FeCl3 being used as a catalyst, salicylaldehyde derivative shown as the formula (III) in the specification and 2-hydroxy-1-naphthaldehyde shown as the formula (IV) in the specification are in contact reaction with alcohol and meldrum's acid which have a general formula, namely R2OH. Through the fact that the salicylaldehyde derivative, the 2-hydroxy-1-naphthaldehyde, the alcohol or the meldrum's acid is catalyzed by FeCl3 in multi-component contact reaction under a relatively temperate condition, the coumarin-3-carboxylic ester derivative with relatively high productivity is synthesized in relatively short reaction time, and the method is simple in step, efficient and environment-friendly, and completely meets the concept of green chemistry.
FRET-based rhodamine-coumarin conjugate as a Fe3+ selective ratiometric fluorescent sensor in aqueous media
Qin, Jing-Can,Yang, Zheng-Yin,Wang, Guan-Qun,Li, Chao-Rui
, p. 5024 - 5029 (2015/08/04)
Abstract In this study, a novel ratiometric fluorescent sensor (HL) for Fe3+ based on the conjugation of rhodamine and coumarin has been designed and synthesized. The free sensor displays fluorescence emission at 475 nm, on the addition of Fe3+ to an aqueous solution of HL, the sensor shows significant fluorescence enhancement at 550 nm which should be attributed to an intramolecular fluorescence resonance energy transfer (FRET) mechanism from coumarin to Rhodamine 6G.
Synthesis of coumarin-3-carboxylic esters via FeCl3-catalyzed multicomponent reaction of salicylaldehydes, Meldrum's acid and alcohols
He, Xinwei,Shang, Yongjia,Zhou, Yao,Yu, Zhiyu,Han, Guang,Jin, Wenjing,Chen, Jiaojiao
, p. 863 - 868 (2015/01/30)
A FeCl3-catalyzed multicomponent reaction was developed for the facile synthesis of coumarin-3-carboxylic ester derivatives in a highly atom-economic and environmentally friendly way. Using simple and cheaply available salicylaldehydes, Meldrum's acid and alcohols as the starting materials, the method needs no extra additives and features wide substrate scope, good functional group tolerance and mild reaction conditions.
High-affinity fluorescent ligands for the 5-HT3 receptor
Simonin, Jonathan,Vernekar, Sanjeev Kumar V.,Thompson, Andrew J.,Hothersall, J. Daniel,Connolly, Christopher N.,Lummis, Sarah C.R.,Lochner, Martin
supporting information; experimental part, p. 1151 - 1155 (2012/03/26)
The synthesis, photophysical and biological characterization of a small library of fluorescent 5-HT3 receptor ligands is described. Several of these novel granisetron conjugates have high quantum yields and show high affinity for the human 5-HT3AR.
A 'turn-on' fluorescent probe that selectively responds to inorganic mercury species
Cho, Yong-Suk,Ahn, Kyo Han
supporting information; experimental part, p. 3852 - 3854 (2010/08/20)
A fluorescent probe selectively senses inorganic mercury in the turn-on mode through a mercury ionpromoted hydrolysis reaction that leads to a coumarin, among various other metal species except Au(III).
