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Journal articles on the topic 'Azo Coumarins'

Author: Grafiati

Published: 5 June 2025

Last updated: 15 July 2025

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1

Karami, Bahador, and Mahtab Kiani. "Application of 7-amino coumarins for the synthesis of novel and thermally stable water-insoluble azo-coumarin dyes." Journal of the Iranian Chemical Society 13, no. 1 (2015): 111–16. http://dx.doi.org/10.1007/s13738-015-0718-5.

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2

Karami, Bahador, and Mahtab Kiani. "Green Synthesis of Novel Class of Azo Dyes Based on Naphthols, Coumarins, and Phenols with Molybdate Sulfuric Acid." Polycyclic Aromatic Compounds 37, no. 4 (2016): 257–66. http://dx.doi.org/10.1080/10406638.2015.1088045.

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3

Shreevatsa, Bhargav, Chandan Dharmashekara, Vikas Halasumane Swamy, et al. "Virtual Screening for Potential Phytobioactives as Therapeutic Leads to Inhibit NQO1 for Selective Anticancer Therapy." Molecules 26, no. 22 (2021): 6863. http://dx.doi.org/10.3390/molecules26226863.

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NAD(P)H:quinone acceptor oxidoreductase-1 (NQO1) is a ubiquitous flavin adenine dinucleotide-dependent flavoprotein that promotes obligatory two-electron reductions of quinones, quinonimines, nitroaromatics, and azo dyes. NQO1 is a multifunctional antioxidant enzyme whose expression and deletion are linked to reduced and increased oxidative stress susceptibilities. NQO1 acts as both a tumor suppressor and tumor promoter; thus, the inhibition of NQO1 results in less tumor burden. In addition, the high expression of NQO1 is associated with a shorter survival time of cancer patients. Inhibiting N

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4

Ayare, Nitesh N., Supriya H. Ramugade, and Nagaiyan Sekar. "Photostable coumarin containing azo dyes with multifunctional property." Dyes and Pigments 163 (April 2019): 692–99. http://dx.doi.org/10.1016/j.dyepig.2018.12.050.

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5

Tadhamun Sabah Younus and Tariq Ali Fahd. "Synthesis and Thermal Studies of Some Metal azo Complexes Derived from Hydroxy coumarin." Journal of Kufa for Chemical Sciences 2, no. 9 (2023): 163–77. http://dx.doi.org/10.36329/jkcm/2022/v2.i9.11156.

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In the current study, of two azo dyes made from coumarin and procaine (T1) and coumarin and Sulfa guanidine (T2)were synthesized. The dyes were characterized by IR, CHN, 1H-NMR, 13C-NMR and MS spectroscopic techniques. . To make azo metal(II) complexes, these novel legands were combined with acetate salts of copper(II) and nickel(II) in a 1:2 molar ratio.The metal to ligand ratio [M:L] in all complexes, according to analytical data, is (1:2).This ligand behaves as a bidentate chelating, according to spectral and analytical data.Thermo gravimetric (TGA) analysis was used to study the thermal be

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6

Rasheed, Omer, and Peter Quayle. "Azo Dyes: New Palladium- and Copper-Catalysed Coupling Reactions on an Old Template." Synthesis 50, no. 13 (2018): 2608–16. http://dx.doi.org/10.1055/s-0036-1591571.

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The elaboration of azo dyes using a variety of transition-metal-catalysed reactions (Stille, Heck, Ullmann, and Suzuki couplings) is reported. This methodology has been applied to the synthesis of functionalised coumarin azo dye conjugates, substrates which may find potential application in the development of new sensors.

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7

Hagar, M., H. A. Ahmed, and O. A. Alhaddadd. "DFT Calculations and Mesophase Study of Coumarin Esters and Its Azoesters." Crystals 8, no. 9 (2018): 359. http://dx.doi.org/10.3390/cryst8090359.

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Two groups of coumarin derivatives, 4-methyl-2-oxo-2H-chromen-7-yl 4-alkoxybenzoates (coumarin esters), In, and 4-methyl-2-oxo-2H-chromen-7-yl 4-(2-(4-alkoxyphenyl)diazenyl) benzoates (coumarin azoesters), IIn, were synthesized and investigated for their mesophase behavior and stability. Each group constitutes five series that differ from each other by length of the mesogenic part. Within each homologous series, the length of the terminal alkoxy group varies between 6, 8, 10, 12 and 16 carbons. Mesophase behavior was investigated by differential scanning calorimetry (DSC) and identified by pol

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8

Tahir, Tehreem, Muhammad Ashfaq, Humna Asghar, Mirza I. Shahzad, Rukhsana Tabassum, and Areeba Ashfaq. "Medicinal Importance of Azo and Hippuric Acid Derivatives." Mini-Reviews in Medicinal Chemistry 19, no. 9 (2019): 708–19. http://dx.doi.org/10.2174/1389557518666180727162018.

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In this review, specific therapeutic and medicinal advantages including antiviral, antibacterial, antifungal and antitumor, strategies for drug designing, structure-activity relationship, advances in the syntheses of azo and hippuric acid derivatives of more than 50 compounds have been discussed since 2009-2018. It is found that phenyl-diazenyl azo derivatives and pyridinyl substituted hippuric acid derivatives showed promising antiretroviral potential. The incorporation of azo functionality to the respective quinolones and coumarin moieties and the insertion of thiocarbazone to hippuric acid

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9

H.A., Imanli, and Serkerov S.V. "The Coumarins of the Roots of Heracleum sosnowskyi." Journal of Life Sciences and Biomedicine 71, no. 3 (2016): 35–38. https://doi.org/10.5281/zenodo.8157036.

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6 coumarinic derivatives were isolated from the roots of Heracleum sosnowskyi Manden, collected in September 2013 in the vicinity of the village of Kuzun of the Gusar region of Azerbaijan by chromatography of the amount of extractives obtained by extracting plant material (shredded, air- dried roots) with acetone on a column of an Aho,: 1) C₁H₂O₁, m.p. 161-163°C; II) C₁H₂O₂, m.p. 138- 139°C; III) C₁H,O, m.p. 189-191°C; IV) C₁H₂O, m.p. 145-146°C; V) CHO, m.p. 116-118, VI) C₁H₁Os, m.p. 118-120°C; Based on the data obtained, when interpreting IR and 'H NMR spectra, the obt

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10

Papia, Datta, Halder Ajanta, Baran Manik Nabin, and Sinha Chittaranjan. "Photovoltaic properties of 2-(coumarinyl-6-azo)imidazoles and their derivatives." Journal of Indian Chemical Society Vol. 91, May 2014 (2014): 925–31. https://doi.org/10.5281/zenodo.5720159.

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Department of Chemistry, Jadavpur University, Kolkata-700 032, India <em>E-mail </em>: c_r_sinha@yahoo.com Department of Physics, Jadavpur University, Kolkata-700 032, India <em>Manuscript received online 08 August 2013, revised 15 October 2013, accepted 21 November 2013</em> Photovoltaic property of 2-(coumarinyl-6-azo)imidazoles and their derivatives, 1-alkyl-2-(coumarinyl-6- azo)imidazoles have been studied. Light-energy conversion efficiency (ɳ ) is dependent on charge anisotropy in the molecule. Substitution of methyl group (1-Me) at imidazolyl ring increases the photovoltaic power conver

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11

Gaffer, Hatem, Mounir Salem, and Magda Marzouk. "Synthesis of 4-hydroxy coumarin dyes and their applications." Pigment & Resin Technology 45, no. 5 (2016): 320–29. http://dx.doi.org/10.1108/prt-09-2014-0071.

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Purpose The present study aims to focus on the possibility of developing new eco-friendly azo dyes with good colouristic application properties, exhibiting biological and pharmacological activities. Design/methodology/approach Coupling of 4-hydroxycoumarin with a variety of aromatic diazonium salts of 2-aminothiazole, 2-aminobenzothiazole, 4-aminoantipyrine, 4-aminoacetophenone, adenine sulphate, a-naphthylamine and sulphadimidine to produce novel azo dyes. The compounds were fully characterised using spectroscopic and analytical methods. All of the compounds were tested for their antimicrobia

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12

Dwivedi, Sushil K., Syed S. Razi, and Arvind Misra. "Sensitive colorimetric detection of CN− and AcO− anions in a semi-aqueous environment through a coumarin–naphthalene conjugate azo dye." New Journal of Chemistry 43, no. 13 (2019): 5126–32. http://dx.doi.org/10.1039/c9nj00004f.

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13

Datta, P., D. Sardar, C. Sinha, A. Manna, and M. Chatterjee. "Structure and Cytotoxic Activity of Novel 2-(Coumarinyl-6-azo)imidazoles." Asian Journal of Chemistry 34, no. 11 (2022): 3033–36. http://dx.doi.org/10.14233/ajchem.2022.24051.

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In present work, the cytotoxic activity of a series of 2-(coumarinyl-6-azo)imidazoles compounds were examined. The compounds were screened for cell viability assay in RAW 264.7 cell line and all the compounds exhibit cytotoxic activity. Single crystal X-ray diffraction study had also been carried out to confirm the structure of the compounds.

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14

B, Manjunatha, Yadav D. Bodke, Nagaraja O, Lohith T. N, Nagaraju G, and Sridhar MA. "Coumarin-Benzothiazole Based Azo Dyes: Synthesis, Characterization, Computational, Photophysical and Biological Studies." Journal of Molecular Structure 1246 (December 2021): 131170. http://dx.doi.org/10.1016/j.molstruc.2021.131170.

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15

Babu, K., and K. Tharini. "Synthesis and Biological Studies of Novel Coumarin Derivatives Comprising Azo Functional Group." Asian Journal of Chemistry 29, no. 1 (2017): 187–90. http://dx.doi.org/10.14233/ajchem.2017.20249.

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16

Pangal, Anees, Javed Shaikh, Ranjit Kadam, Ravindra Kodag, and Khursheed Ahmed. "Virtual Screening of New azo Coumarin Derivatives as Possible Alkaline Phosphatase Inhibitors." Current Trends in Biotechnology and Pharmacy 18, no. 3 (2024): 1922–34. http://dx.doi.org/10.5530/ctbp.2024.3.38.

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17

Alghool, Samir. "Metal complexes of azo coumarin derivative: synthesis, spectroscopic, thermal, and antimicrobial studies." Journal of Coordination Chemistry 63, no. 18 (2010): 3322–33. http://dx.doi.org/10.1080/00958972.2010.508519.

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18

Uraev, Ali I., Valery G. Vlasenko, Anatolii S. Burlov, Nadezhda I. Makarova, Konstantin A. Lyssenko, and Dmitrii A. Garnovskii. "Synthesis and structure of nickel and copper chelate complexes with coumarin azo ligand." Mendeleev Communications 28, no. 2 (2018): 205–7. http://dx.doi.org/10.1016/j.mencom.2018.03.033.

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19

Özkütük, Müjgan, Ezgi İpek, Burcu Aydıner, Serhat Mamaş, and Zeynel Seferoğlu. "Synthesis, spectroscopic, thermal and electrochemical studies on thiazolyl azo based disperse dyes bearing coumarin." Journal of Molecular Structure 1108 (March 2016): 521–32. http://dx.doi.org/10.1016/j.molstruc.2015.12.032.

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20

Braun, Ingo, Günter Schulz-Ekloff, Marcus Bockstette, and Dieter Wöhrle. "Microwave-assisted crystallization inclusion of coumarin and azo dyes in alpo4-5 molecular sieves." Zeolites 19, no. 2-3 (1997): 128–32. http://dx.doi.org/10.1016/s0144-2449(97)00057-2.

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21

Abd-El-Aziz, Alaa S., Patrick O. Shipman, Edward G. Neeland, et al. "Benzo[f ]- and Benzo[h ]Coumarin-Containing Poly(methyl methacrylate)s and Poly(methyl methacrylate)s with Pendant Coumarin-Containing Azo Dyes." Macromolecular Chemistry and Physics 209, no. 1 (2007): 84–103. http://dx.doi.org/10.1002/macp.200700476.

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22

Chiranjit, Patra, Roy Himanish, Sen Chandana, and Sinha Chittaranjan. "Coumarinyl-azo-imidazolium protected and concentration dependent size control of gold nanoparticles (GNPs)." Journal of Indian Chemical Society Vol. 92, Jul 2015 (2015): 1117–25. https://doi.org/10.5281/zenodo.5607198.

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Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata-700 032, India <em>E-mail </em>: c_r_sinha@yahoo.com Fax : 91-33-24137121 <em>Manuscript received online 03 November 2014, accepted 24 November 2014</em> 1,3-Dialkyl-2-(coumarinyl-6-azo)imidazolium bromide (L-(C<sub>n</sub>H<sub>2n+1</sub>)<sub>2</sub><sup>+</sup>Br<sup>– </sup>) is used as a surface modifier to control stability and size of gold nanoparticles (GNPs). The size of GNPs is decreased with increasing concentration of L-(C<sub>n</sub>H<sub>2n+1</sub>)<sub>2</sub> +Br<sup>–</sup> and the m

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23

Hazazi, Omar A., Refat El-Sayed, and El-Sayed M. Mabrouk. "Voltammetric studies of some azo compounds derived from 4-methyl-6,7-dihydroxy coumarin in microemulsion and aqueous media." JOURNAL OF ADVANCES IN CHEMISTRY 7, no. 1 (2011): 1271–79. http://dx.doi.org/10.24297/jac.v7i1.971.

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The cyclic voltammetric(CV) behavior of some azo compounds based on coumarin derivatives was investigated in microemulsion systems and in aqueous solutions. The obtained results indicated that these compounds undergo an irreversible 4-electron reduction step leading to cleavage of the N=N center with the formation of amine compounds in all media. The effect of medium on the CV parameters was discussed. The total number of electrons involved in the reduction process was determined by controlled potential coulometry. Also, The effect of substituents on the electrode reaction pathway and the kine

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24

Datta, Papia, Dibakar Sardar, Rajat Saha, Tapan Kumar Mondal, and Chittaranjan Sinha. "Structure, photophysics, electrochemistry and DFT calculations of [RuH(CO)(PPh3)2(coumarinyl-azo-imidazole)]." Polyhedron 53 (April 2013): 193–201. http://dx.doi.org/10.1016/j.poly.2013.01.041.

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25

Sahoo, Jyotirmaya, Suman Kumar Mekap, and Paidesetty Sudhir Kumar. "Synthesis, spectral characterization of some new 3-heteroaryl azo 4-hydroxy coumarin derivatives and their antimicrobial evaluation." Journal of Taibah University for Science 9, no. 2 (2015): 187–95. http://dx.doi.org/10.1016/j.jtusci.2014.08.001.

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26

Ayare, Nitesh N., Mavila C. Sreenath, Subramaniyan Chitrambalam, Isaac H. Joe та Nagaiyan Sekar. "NLO characteristics of D-π-A coumarin-thiophene bridged azo dyes by Z-scan and DFT methods". Molecular Physics 118, № 8 (2019): e1662127. http://dx.doi.org/10.1080/00268976.2019.1662127.

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27

Tathe, Abhinav B., and Nagaiyan Sekar. "Red Emitting Coumarin—Azo Dyes : Synthesis, Characterization, Linear and Non-linear Optical Properties-Experimental and Computational Approach." Journal of Fluorescence 26, no. 4 (2016): 1279–93. http://dx.doi.org/10.1007/s10895-016-1815-2.

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28

Akolgo, Gideon Atinga, Benjamin M. Partridge, Timothy D. Craggs, Kingsley Bampoe Asiedu, and Richard Kwamla Amewu. "Design and Synthesis of Arylboronic Acid Chemosensors for the Fluorescent-Thin Layer Chromatography (f-TLC) Detection of Mycolactone." Chemosensors 13, no. 7 (2025): 244. https://doi.org/10.3390/chemosensors13070244.

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Fluorescent chemosensors are increasingly becoming relevant in recognition chemistry due to their sensitivity, selectivity, fast response time, real-time detection capability, and low cost. Boronic acids have been reported for the recognition of mycolactone, the cytotoxin responsible for tissue damage in Buruli ulcer disease. A library of fluorescent arylboronic acid chemosensors with various signaling moieties with certain beneficial photophysical characteristics (i.e., aminoacridine, aminoquinoline, azo, BODIPY, coumarin, fluorescein, and rhodamine variants) and a recognition moiety (i.e., b

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29

Kiani, Mahtab, and Bahador Karami. "Synthesis of Novel and Thermally Stable Water Insoluble Coumarin-based Azo Dyes via a Mild and Green Procedure." Journal of the Chinese Chemical Society 62, no. 9 (2015): 756–60. http://dx.doi.org/10.1002/jccs.201500135.

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30

Yu, Jing, Xiaolin Liu, Chuanteng Ma, et al. "Activation of a Silent Polyketide Synthase SlPKS4 Encoding the C7-Methylated Isocoumarin in a Marine-Derived Fungus Simplicillium lamellicola HDN13-430." Marine Drugs 21, no. 9 (2023): 490. http://dx.doi.org/10.3390/md21090490.

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Coumarins, isocoumarins and their derivatives are polyketides abundant in fungal metabolites. Although they were first discovered over 50 years ago, the biosynthetic process is still not entirely understood. Herein, we report the activation of a silent nonreducing polyketide synthase that encodes a C7-methylated isocoumarin, similanpyrone B (1), in a marine-derived fungus Simplicillium lamellicola HDN13-430 by heterologous expression. Feeding studies revealed the host enzymes can change 1 into its hydroxylated derivatives pestapyrone A (2). Compounds 1 and 2 showed moderate radical scavenging

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31

Madiahlagan, Eswaran, Sunil B N, Zainab Ngaini, and Gurumurthy Hegde. "Synthesis, liquid crystalline properties and photo switching properties of coumarin-azo bearing aliphatic chains: Application in optical storage devices." Journal of Molecular Liquids 292 (October 2019): 111328. http://dx.doi.org/10.1016/j.molliq.2019.111328.

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32

Yazdanbakhsh, M. R., A. Ghanadzadeh, and E. Moradi. "Synthesis of some new azo dyes derived from 4-hydroxy coumarin and spectrometric determination of their acidic dissociation constants." Journal of Molecular Liquids 136, no. 1-2 (2007): 165–68. http://dx.doi.org/10.1016/j.molliq.2007.03.005.

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33

Ayare, Nitesh N., Suryapratap Sharma, Keval K. Sonigara, Jyoti Prasad, Saurabh S. Soni та Nagaiyan Sekar. "Synthesis and computational study of coumarin thiophene-based D-π-A azo bridge colorants for DSSC and NLOphoric application". Journal of Photochemistry and Photobiology A: Chemistry 394 (травень 2020): 112466. http://dx.doi.org/10.1016/j.jphotochem.2020.112466.

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34

Swamy, K. C. Kumara, Mandala Anitha, Shubham Debnath, and Mallepalli Shankar. "Reactivity of allenylphosphonates/allenylphosphine oxides – some new addition/cycloaddition and cyclization pathways." Pure and Applied Chemistry 91, no. 5 (2019): 773–84. http://dx.doi.org/10.1515/pac-2018-1111.

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Abstract In this paper, we highlight some addition/cycloaddition reactions of allenylphosphonates and allenylphosphine oxides, mostly based on the work done in our laboratory. Thus the electrophilic addition of iodine monochloride (ICl) with allenylphosphine oxides affords cyclic phosphonium salts rather than γ-chloro-β-iodovinylphosphine oxides (NMR, HRMS, X-ray) that exhibit rather unusual downfield shifts in the 31P NMR spectra. These compounds undergo hydrolysis to afford γ-hydroxy-β-iodovinylphosphine oxides; the hydroxymethyl group in these compounds can be oxidized by Dess-Martin period

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35

Delbari, Zahra, Faeze Khodadadi, Mohaddeseh Kazemi, et al. "Combination of Umbelliprenin and Arsenic Trioxide Acts as an Effective Modality Against T-Cell Leukemia/Lymphoma Cells." Natural Product Communications 17, no. 1 (2022): 1934578X2110723. http://dx.doi.org/10.1177/1934578x211072334.

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Adult T-cell leukemia/lymphoma (ATLL) is a serious blood malignancy with distinct geographical distribution. ATLL patients have a short survival time because of intrinsic chemoresistance and severe immunosuppression. To introduce a novel treatment, we investigated whether umbelliprenin (UMB), a natural coumarin derivative, could improve the toxicity of arsenic trioxide (ATO) on ATLL cells. To determine the viability of MT-2 cells upon treatment with different concentrations of UMB and ATO, alamarBlue assay was applied. Cell cycle analysis was carried out by propidium iodide staining and the ex

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36

Li, Hong Qi, Zhen Chen, Hao Chen, et al. "Study on a New Coumarin Derivative as Fluorescent Probe for Hg²⁺ Ions." Advanced Materials Research 904 (March 2014): 99–102. http://dx.doi.org/10.4028/www.scientific.net/amr.904.99.

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A new coumarin derivative L was synthesized and characterized by1H NMR,13C NMR, IR and mass spectrum. UV-Vis and fluorescence emission spectra of L without or with different anions (NO2, F, Cl, HSO3, HSO4, AcO or NO3) or metal ions were measured, which showed while addition of anions or metal ions Mg2+, Zn2+, Ca2+, Cu2+, Ni2+, Co2+, Fe3+or Al3+led to decrease in intensity of the maximum emission peak at about 480 nm, addition of Hg2+ions caused increase in intensity of the maximum emission peak, suggesting that L may act as a fluorescent probe for detection of Hg2+ions.

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37

Fischer, A., C. Cremer, and E. H. K. Stelzer. "Fluorescence of coumarins and xanthenes after two-photon absorption with a pulsed titanium–sapphire laser." Applied Optics 34, no. 12 (1995): 1989. http://dx.doi.org/10.1364/ao.34.001989.

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38

Reddy, B. R., and Putcha Venkateswarlu. "Optical phase conjugation in polycarbonate resin doped with Coumarin 314 dye." Applied Optics 32, no. 21 (1993): 3966. http://dx.doi.org/10.1364/ao.32.003966.

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39

Poudel, Milan P., Alexandre A. Kolomenskii, and Hans A. Schuessler. "Two-photon fluorescence of Coumarin 30 excited by optimally shaped pulses." Applied Optics 49, no. 16 (2010): 3075. http://dx.doi.org/10.1364/ao.49.003075.

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40

He, Guang S., Raffaella Signorini, and Paras N. Prasad. "Two-photon-pumped frequency-upconverted blue lasing in Coumarin dye solution." Applied Optics 37, no. 24 (1998): 5720. http://dx.doi.org/10.1364/ao.37.005720.

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41

Bedair, Mahmoud A. "A novel coumarin-azo Schiff base for dual corrosion inhibition for steel in acidic environments and anti-SRB protection: Experimental and computational insights." Results in Surfaces and Interfaces 19 (May 2025): 100511. https://doi.org/10.1016/j.rsurfi.2025.100511.

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42

Hamukoshi, Simeon, Neliswa Mama, Stiaan Schoeman, and Veikko Uahengo. "A facile synthesis of a novel 4-hydroxyl-3-azo coumarin based colorimetric probes for detecting Hg²⁺ and a fluorescence turn-off response of 3CBD to Fe³⁺ in aqueous environment." RSC Advances 13, no. 45 (2023): 31541–53. http://dx.doi.org/10.1039/d3ra04047j.

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Two azo dyes, (E)-3-(benzo[d]thiazol-2-yldiazenyl)-4-hydroxy-2H-chromen-2-one (3CBD) and (E)-4-hydroxy-3-(quinolin-2-yldiazenyl)-2H-chromen-2-one (3CQD), were designed and synthesized using facile methods.

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43

Anilkumara, H. A. "Synthesis, Analysis and Biological assessment of a Novel Coumarin AzoDye Ligand and Its 3d Metal Complexes for Photocatalytic investigationof MB dye." African Journal of Biological Sciences 6, no. 5 (2024): 7920–46. http://dx.doi.org/10.48047/afjbs.6.5.2024.7920-7946.

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A novel azo dye ligand, 7-hydroxy-4-methyl-8-[(E)-(6-nitro-1,3- benzothiazol-2-yl)diazenyl]-2H-chromen-2-one ligand (MNB)was synthesized, and has been used to synthesise Co(II), Ni(II), Cu(II) complexes. The synthesized compounds were characterized using various physicochemical and spectroscopic techniques.The biological investigation of the synthesized Schiff base ligand and its metal complexes have been determined against the bacteria (Staphylococcus aureus and Escherichia coli), fungal (A. flavous and P. anomala) and antioxidant activity using Iron chelating assay by using standard assay me

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44

Chen, C. H., J. L. Fox, F. J. Duarte, and J. J. Ehrlich. "Lasing characteristics of new coumarin-analog dyes: broadband and narrow-linewidth performance." Applied Optics 27, no. 3 (1988): 443. http://dx.doi.org/10.1364/ao.27.000443.

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45

Nedumpara, Ritty J., Thomas K. J., Jayasree V. K., C. P. Girijavallabhan, V. P. N. Nampoori, and P. Radhakrishnan. "Study of solvent effect in laser emission from Coumarin 540 dye solution." Applied Optics 46, no. 21 (2007): 4786. http://dx.doi.org/10.1364/ao.46.004786.

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46

Minoda, Masahiko, Daichi Shimizu, Tatsuya Nohara, and Jin Motoyanagi. "Preparing Surface-Functionalized Polymer Films with Hierarchically Ordered Structure by a Combination of Nanoimprinting and Controlled Graft Polymerization." Surfaces 8, no. 3 (2025): 48. https://doi.org/10.3390/surfaces8030048.

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It is widely recognized that fine surface structures found in nature contribute to surface functionality, and studies on the design of functional materials based on biomimetics have been actively conducted. In this study, polymer thin films with hierarchically ordered surface structure were prepared by combining both nanoimprinting using anodically oxidized porous alumina (AAO) as a template and surface-initiated atom transfer radical polymerization (SI-ATRP). To prepare such polymer films, we designed a new copolymer (poly{[2-(4-methyl-2-oxo-2H-chromen-7-yloxy)ethyl methacrylate]-co-[2-(2-bro

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Lin, Qing Bai, and Fu Geng Zhang. "Coumarin 120 laser pulses close to the Fourier transform limit from a simplified resonant cavity." Applied Optics 26, no. 13 (1987): 2572. http://dx.doi.org/10.1364/ao.26.002572.

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D., Das, Dinda J, K. Mondal T., K. Sarkcr K., and Sinha C. "Synthesis, structure and photoluminescence properties of zinc(II)-naphthyl-(2-pyridylmethylene)amines and comparison with zinc(II)-naphthylazoimidazoles." Journal of Indian Chemical Society Vol. 83, Sep 2006 (2006): 861–67. https://doi.org/10.5281/zenodo.5829751.

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Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata-700 032, India E-mail : c_r_sinha@yahoo.com <em>Manuscript received 18 May 2006, accepted 26 May 2006</em> Zinc(II) complexes of 1-alkyl-2-(naphthyl-α/β-azo)imidazoles (azoimine function, -N=N-C=N-) and α/β-naphthyl-(2- pyridylmethylene)amine (diimine function, -N=C-C=N-) are described in this article. The complexcs arc spcctroscopically characterized (IR, UV-Vls, NMR). The composition of the complex depends on the counter ions used; the reaction of ZnCl<sub>2</sub> with ligand gives tctrah

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Gao, Yan, Huimin Liu, Peng Li, Qinglei Liu, Wei Wang, and Bing Zhao. "Coumarin-based fluorescent chemosensor for the selective quantification of Zn 2+ and AcO − in an aqueous solution and living cells." Tetrahedron Letters 58, no. 23 (2017): 2193–98. http://dx.doi.org/10.1016/j.tetlet.2017.04.054.

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Qader, Aryan F., and Mehmet Yaman. "Blackberry (Rubus fruticosus L.) Fruit Extract Phytochemical Profile, Antioxidant Properties, Column Chromatographic Fractionation, and High-performance Liquid Chromatography Analysis of Phenolic Compounds." ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY 11, no. 2 (2023): 43–50. http://dx.doi.org/10.14500/aro.11189.

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This groundbreaking study explores the untapped potential of blackberries, a member of the Rubus genus in the Rosaceae family, and sheds light on their remarkable health and medicinal properties. Unlike previous research conducted in other regions, this investigation focuses specifically on the blackberry fruit’s phytochemical constituents, chromatographic fractionations, and antioxidant activities in the Koisinjaq and Erbil villages of Northern Iraq. The research unveils seven distinct fractions obtained through column chromatography, with Fractions 2 and 3,5 found to contain p-coumaric acid

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