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Journal articles on the topic 'Diazotization'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Wang, Fa-Jun, An Chen, Si-da Ling, and Jian-Hong Xu. "Continuous-flow diazotization of red base KD hydrochloride suspensions in a microreaction system." Reaction Chemistry & Engineering 6, no. 8 (2021): 1462–74. http://dx.doi.org/10.1039/d1re00075f.

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A continuous-flow microreaction system has been developed to perform the diazotization reaction of red base KD suspensions. The yield of the diazotization reaction could reach over 99% in 21.2 s under optimized conditions.

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2

Désuets, Denis, and Gordon K. Hamer. "Diazotization of 2,6-diaminobenzothiazole." Dyes and Pigments 22, no. 3 (1993): 183–90. http://dx.doi.org/10.1016/0143-7208(93)87005-y.

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3

Mear, Sarah Jane, and Timothy F. Jamison. "Diazotization of S-Sulfonyl-cysteines." Journal of Organic Chemistry 84, no. 22 (2019): 15001–7. http://dx.doi.org/10.1021/acs.joc.9b02630.

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4

Gilman, Henry, and George F. Wright. "The diazotization of an aminofuran." Recueil des Travaux Chimiques des Pays-Bas 53, no. 1 (2010): 13–17. http://dx.doi.org/10.1002/recl.19340530104.

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5

Mirjalili, Mohammad, Fatemeh Zahed, and Alireza Hassanabadi. "A New Nano Silica Gel Supported by Thionyl Chloride as a Solid Acid for the Efficient Diazotization of Aniline Derivatives: Application and Synthesis of Azo Dyes." E-Journal of Chemistry 9, no. 2 (2012): 1042–46. http://dx.doi.org/10.1155/2012/306137.

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A new nano silicagel supported by thionyl chloride as a solid acid was synthesized and used as a increasing the production yield of dye to affect the efficient diazotization of arylamines. The diazonium salts thus obtained were coupled, using standard experimental procedures, to anilines and naphthols to afford the requisite azo dyes in good yield. The diazotization and subsequent azo-coupling generated the related azo dyes at low temperature in short reaction times with a simple experimental procedure.

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6

Kaur, Inderpreet, Sonal Gaba, Sukhraj Kaur, Rajeev Kumar, and Jyoti Chawla. "Spectrophotometric determination of triclosan based on diazotization reaction: response surface optimization using Box–Behnken design." Water Science and Technology 77, no. 9 (2018): 2204–12. http://dx.doi.org/10.2166/wst.2018.123.

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Abstract A spectrophotometric method based on diazotization of aniline with triclosan has been developed for the determination of triclosan in water samples. The diazotization process involves two steps: (1) reaction of aniline with sodium nitrite in an acidic medium to form diazonium ion and (2) reaction of diazonium ion with triclosan to form a yellowish-orange azo compound in an alkaline medium. The resulting yellowish-orange product has a maximum absorption at 352 nm which allows the determination of triclosan in aqueous solution in the linear concentration range of 0.1–3.0 μM with R2 = 0.

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7

Kawai, Seiji, Akito Yamada, Yohei Katsuyama, and Yasuo Ohnishi. "Identification of the p-coumaric acid biosynthetic gene cluster in Kutzneria albida: insights into the diazotization-dependent deamination pathway." Beilstein Journal of Organic Chemistry 20 (January 2, 2024): 1–11. http://dx.doi.org/10.3762/bjoc.20.1.

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Recently, we identified the biosynthetic gene cluster of avenalumic acid (ava cluster) and revealed its entire biosynthetic pathway, resulting in the discovery of a diazotization-dependent deamination pathway. Genome database analysis revealed the presence of more than 100 ava cluster-related biosynthetic gene clusters (BGCs) in actinomycetes; however, their functions remained unclear. In this study, we focused on an ava cluster-related BGC in Kutzneria albida (cma cluster), and revealed that it is responsible for p-coumaric acid biosynthesis by heterologous expression of the cma cluster and i

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8

Wafi, Abdul, Ganden Supriyanto, and Tjitjik Srie Tjahjandarie. "A Novel Spectrophotometric Method for Determination of Chloramphenicol Based On Diazotization Reaction at Room Temperature." Indonesian Journal of Chemistry 16, no. 1 (2018): 32. http://dx.doi.org/10.22146/ijc.21174.

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An analytical method for determination of chloramphenicol (CAP) based on the diazotization reaction at room temperature has been developed. The CAP was reduced using zinc powder (Zn) and diazotization reaction was carried out at room temperature in the presence of NaNO2, bismuth nitrate pentahydrate (Bi(NO3)3.5H2O) as catalyst. 2-napthol was used as coupling agent to form a red-violet solution and the absorbance was measured by UV-Vis spectrophotometer at 554 nm. The optimization of analytical parameters including reducing agent, catalyst, coupling agent and time response were 0.15 g, 0.15 g,

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9

Abd El-Lateef, Hany M., Hend A. A. Ezelarab, Ali M. Ali, et al. "Design and evaluation of sulfadiazine derivatives as potent dual inhibitors of EGFR^WT and EGFR^T790M: integrating biological, molecular docking, and ADMET analysis." RSC Advances 14, no. 39 (2024): 28608–25. http://dx.doi.org/10.1039/d4ra04165h.

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10

Qiu, Jiang-Kai, Wen-Juan Hao, De-Cai Wang, et al. "Selective sulfonylation and diazotization of indoles." Chem. Commun. 50, no. 94 (2014): 14782–85. http://dx.doi.org/10.1039/c4cc06795a.

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11

Li, Ruijun, Yue Yang, Datong Wu, et al. "Covalent functionalization of reduced graphene oxide aerogels with polyaniline for high performance supercapacitors." Chemical Communications 55, no. 12 (2019): 1738–41. http://dx.doi.org/10.1039/c8cc07744d.

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12

Pandey, Garima, and Béla Török. "K-10 montmorillonite-catalyzed solid phase diazotizations: environmentally benign coupling of diazonium salts with aromatic hydrocarbons to biaryls." Green Chemistry 19, no. 22 (2017): 5390–95. http://dx.doi.org/10.1039/c7gc02804k.

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13

Cambie, RC, PI Higgs, PS Rutledge, and PD Woodgate. "Annulations of Podocarpic Acid Derivatives via an Aryne Intermediate." Australian Journal of Chemistry 47, no. 10 (1994): 1815. http://dx.doi.org/10.1071/ch9941815.

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The cycloaddition of substituted furans to the diterpenoid aryne (39), generated by in situ diazotization of the anthranilic acid (1) followed by cleavage of the annulated 1,4- epoxydecahydrochrysenes, provides a convenient method for the preparation in high yield of the previously unknown 1-substituted octahydrochrysen-4-ols. Use of 1,3-dipoles under the same procedure, or under a modified procedure involving pre-isolation of the diazonium tetrafluoroborate salt (9), gave novel annulated heterocyclic products directly. Attempted [2+2] cycloadditions of electron-rich alkenes to the diterpenoid

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14

Hou, Lijie, Zhongai Hu, Hongying Wu, et al. "2-Amino-3-chloro-1,4-naphthoquinone-covalent modification of graphene nanosheets for efficient electrochemical energy storage." Dalton Transactions 48, no. 25 (2019): 9234–42. http://dx.doi.org/10.1039/c9dt00895k.

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15

Zhao, Huajun, Qiujun Wang, Yonghong Deng, et al. "Preparation of renewable lignin-derived nitrogen-doped carbon nanospheres as anodes for lithium-ion batteries." RSC Advances 6, no. 81 (2016): 77143–50. http://dx.doi.org/10.1039/c6ra17793j.

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16

Delaporte, Nicolas, Karim Zaghib, and Daniel Bélanger. "In situ formation of bromobenzene diazonium ions and their spontaneous reaction with carbon-coated LiFePO4 in organic media." New Journal of Chemistry 40, no. 7 (2016): 6135–40. http://dx.doi.org/10.1039/c6nj00132g.

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17

Gao, Mengyue, Wei Fang, Jiaqiang Ren, Aiguo Shen, and Jiming Hu. "Reliable SERS detection of nitrite based on pH and laser irradiance-dependent diazotization through a convenient sampling micro-chamber." Analyst 141, no. 17 (2016): 5195–201. http://dx.doi.org/10.1039/c6an00880a.

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18

Safari, Javad, and Zohre Zarnegar. "An environmentally friendly approach to the green synthesis of azo dyes in the presence of magnetic solid acid catalysts." RSC Advances 5, no. 23 (2015): 17738–45. http://dx.doi.org/10.1039/c4ra13562h.

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19

YONEDA, Norihiko, and Tsuyosi FUKUHARA. "Preparation of fluoroaromatics - Diazotization-fluorodediazoniation of aminoaromatics." Journal of Synthetic Organic Chemistry, Japan 47, no. 7 (1989): 619–28. http://dx.doi.org/10.5059/yukigoseikyokaishi.47.619.

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20

Patil, Amol A. "Diazotization and Derivatization of Carisoprodol Using Chromatography." International Journal of Pharmacy & Biomedical Research 7, no. 3 (2020): 33–38. http://dx.doi.org/10.18782/2394-3726.1094.

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21

Zanger, Murray, and James R. McKee. "The synthesis of methyl salicylate: Amine diazotization." Journal of Chemical Education 65, no. 12 (1988): 1106. http://dx.doi.org/10.1021/ed065p1106.

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22

Sreekumar, N. V., B. Narayana, Prashant Hegde, B. R. Manjunatha, and B. K. Sarojini. "Determination of nitrite by simple diazotization method." Microchemical Journal 74, no. 1 (2003): 27–32. http://dx.doi.org/10.1016/s0026-265x(02)00093-0.

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23

Shukla, C. A., A. A. Kulkarni, and V. V. Ranade. "Selectivity engineering of the diazotization reaction in a continuous flow reactor." Reaction Chemistry & Engineering 1, no. 4 (2016): 387–96. http://dx.doi.org/10.1039/c5re00056d.

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In situ generated diazonium salts are useful intermediates for the synthesis of fine chemicals and active pharmaceutical ingredients. This paper presents a methodology for selectivity engineering of the diazotization reaction in continuous reactors.

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24

Olaleye, Sefiu Olalekan, Sunday Olakunle Idowu, Shakil Ahmed, and Maria Aqeel Khan. "New 8-hydroxyquinoline-based azo dyes as highly sensitive colorimetric chemosensors for nickel cation." RSC Advances 15, no. 5 (2025): 3497–514. https://doi.org/10.1039/d4ra08510h.

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A new series of sensitive 8-hydroxyquinoline azo-compounds (S1–S8) as sensors was synthesized by diazotization and diazo-coupling, and these compounds were characterized through UV, FTIR, 1H-NMR, 13C-NMR and ESI-MS investigations.

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25

Hou, Jingzhou, Huixiang Wu, Xin Shen, et al. "Phenosafranin-Based Colorimetric-Sensing Platform for Nitrite Detection Enabled by Griess Assay." Sensors 20, no. 5 (2020): 1501. http://dx.doi.org/10.3390/s20051501.

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A facile and effective colorimetric-sensing platform based on the diazotization of phenosafranin for the detection of NO 2 − under acidic conditions using the Griess assay is presented. Diazotization of commercial phenosafranin produces a color change from purplish to blue, which enables colorimetric quantitative detection of NO 2 − . Optimal detection conditions were obtained at a phenosafranin concentration of 0.25 mM, HCl concentration of 0.4 M, and reaction time of 20 min. Under the optimized detection conditions, an excellent linearity range from 0 to 20 μM was obtained with a detection l

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26

Khaligh, Nader Ghaffari, Mohd Rafie Johan, and Juan Joon Ching. "Saccharin: a cheap and mild acidic agent for the synthesis of azo dyes via telescoped dediazotization." Green Processing and Synthesis 8, no. 1 (2019): 24–29. http://dx.doi.org/10.1515/gps-2017-0133.

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Abstract Green synthesis methods are considered as a safer alternative to the conventional synthetic processes due to their eco-friendly nature, cost-effectiveness, and easy handling. In the present study, an eco-friendly and sustainable method for the synthesis of stable arenediazonium has been developed using saccharin as a cheap and mild acidic agent and tert-butyl nitrite as a diazotization reagent for the first time. These stable intermediates were used in the azo coupling reaction with 4-hydroxybenzaldehyde via telescoped dediazotization. The current method has advantages such as reduced

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27

Wang, Xiaojun, Yajun Li, Yuwei Guo, Zhentong Zhu, Yongming Wu, and Weiguo Cao. "Direct isoperfluoropropylation of arenediazonium salts with hexafluoropropylene." Organic Chemistry Frontiers 3, no. 3 (2016): 304–8. http://dx.doi.org/10.1039/c5qo00388a.

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Perfluoropropylene can be used directly for isoperfluoropropylation of arenediazonium salts in the presence of silver fluoride and cuprous iodide. A practical tandem diazotization and isoperfluoropropylation protocol was developed for aniline derivatives to generate isoperfluoropropylarenes with good functional-group compatibility.

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28

Song, Xiyu, Chuang Dai, Mingda Li, et al. "Preparation of high-performance monoazo disperse dyes bearing ester groups based on benzisothiazole and their dyeing performance on polyester fabrics." RSC Advances 14, no. 1 (2024): 67–74. http://dx.doi.org/10.1039/d3ra06452b.

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A series of azo disperse dyes containing different kinds of ester groups based on benzisothiazole were synthesized by the coupling reaction of diazotization of 3-amino-5-nitro [2,1] benzisothiazole with N-substituted aniline compounds bearing different ester moieties.

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29

Miao, Pandeng, Zhongdong Liu, Jun Guo, et al. "A novel ultrasensitive surface plasmon resonance-based nanosensor for nitrite detection." RSC Advances 9, no. 31 (2019): 17698–705. http://dx.doi.org/10.1039/c9ra02460c.

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A satellite-like AuNP aggregate-based nitrite detection nanosensor was designed via diazotization coupling reaction and can significantly lower the naked-eye detection limit to 3.0 ng mL<sup>−1</sup>. This nanosensor has important applications in food detection and cancer prevention.

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30

Pawar, Shital Patangrao, Dhruva A. Marathe, K. Pattabhi, and Suryasarathi Bose. "Electromagnetic interference shielding through MWNT grafted Fe3O4 nanoparticles in PC/SAN blends." Journal of Materials Chemistry A 3, no. 2 (2015): 656–69. http://dx.doi.org/10.1039/c4ta04559a.

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In this study, multiwall carbon nanotubes (MWNTs) were chemically grafted onto dopamine anchored iron oxide (Fe<sub>3</sub>O<sub>4</sub>) nanoparticles via diazotization reaction to design electromagnetic (EM) shielding materials based on PC (polycarbonate)/SAN [poly (styrene-co-acrylonitrile)] blends.

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31

Isaad, Jalal. "Acidic ionic liquid supported on silica-coated magnetite nanoparticles as a green catalyst for one-pot diazotization–halogenation of the aromatic amines." RSC Adv. 4, no. 90 (2014): 49333–41. http://dx.doi.org/10.1039/c4ra05705h.

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Acidic ionic liquid was immobilized on silica-coated magnetite nanoparticles (Fe<sub>3</sub>O<sub>4</sub>@SILnP) and used as an efficient heterogeneous catalyst for the diazotization–iodination reaction of different aromatic amines under solvent-free conditions at room temperature.

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32

Alubaidy, Ghassan F., Asma A. Basheer, Shakir M. Saied, and Enas S. Thanoon. "Spectrophotometric Determination of Paracetamol Using Diazotization Coupling Reaction." Rafidain Journal of Science 28, no. 2 (2019): 76–83. http://dx.doi.org/10.33899/rjs.2019.159979.

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33

Parrino, Barbara, Virginia Spanò, Anna Carbone, et al. "‘Interrupted’ diazotization of 3-aminoindoles and 3-aminopyrroles." Tetrahedron 70, no. 40 (2014): 7318–21. http://dx.doi.org/10.1016/j.tet.2014.07.051.

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34

Giumanini, Angelo G., Giancarlo Verardo, Paola Geatti, and Paolo Strazzolini. "Aprotic diazotization in the presence of cuprous cyanide." Tetrahedron 52, no. 20 (1996): 7137–48. http://dx.doi.org/10.1016/0040-4020(96)00331-6.

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35

Sonoda, Masaru, Taiju Hashimoto, Akira Satomi, Takashi Miyazaki, Kiyoshi Ishida, and Yoshikatsu Sakagishi. "Diazotization reaction of nitric oxide trapped by hemoglobin." Life Sciences 55, no. 11 (1994): PL199—PL204. http://dx.doi.org/10.1016/0024-3205(94)90047-7.

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36

Qiu, Jiang-Kai, Wen-Juan Hao, De-Cai Wang, et al. "ChemInform Abstract: Selective Sulfonylation and Diazotization of Indoles." ChemInform 46, no. 15 (2015): no. http://dx.doi.org/10.1002/chin.201515156.

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37

Nabila, Almira, and Monica Sianita Maria. "Analysis of Chloramphenicol in Shrimp Using Standard Addition Method Based on Diazotization." International Journal of Current Science Research and Review 05, no. 07 (2022): 2378–83. https://doi.org/10.5281/zenodo.6814848.

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<strong>ABSTRACT: </strong>This research aimed to determine the concentration of chloramphenicol in shrimp using the standard addition method based on the diazotization reaction using Zn powder as a reducing agent of chloramphenicol, followed by the use of N-(1-naphthyl) ethylenediamine dihydrochloride as a coupling agent and measured at 565 nm. Based on the test, the shrimp sample was found to contain 1964.91 mg/kg of chloramphenicol and it exceeded the requirements set by the European Commission which was 0,15 mg/kg. The limit of detection (LOD) value is 0.19 mg/mL and the limit of quantitat

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38

Lesina, Yulia, Perizat Beysembay, and Assiya Kassanova. "One-Pot Synthesis of Chloropyridines from Aminopyridines via Diazotization." Key Engineering Materials 712 (September 2016): 273–76. http://dx.doi.org/10.4028/www.scientific.net/kem.712.273.

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A method for synthesis of chloropyridines from pyridinyl trifluoromethanesulfonates in acetonitrile in the presence of hydrochloric acid was developed. One-pot synthesis of chloropyridines from aminopyridines via diazotization was presented. Pyridyl triflates were obtained in this reaction in situ. This method provides good yields of the target products.

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39

BERLADEAN, IULIAN, AUREL SIMION, IRINA CÂRLESCU, and Nicolae Hurduc. "Synthesis and Characterization of Azobenzene Alkylated Mesogen with Fluorine Substituent." Buletinul Institutului Politehnic din Iași, Secția Chimie și Inginerie Chimică 70, no. 1 (2024): 101–5. https://doi.org/10.5281/zenodo.11146121.

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The paper presents synthesis and characterization of azobenzene compound that contains 10 carbon atoms as flexible terminal chain and one fluorine atom as lateral polar substituent. The synthesis was achieved by diazotization of 4-amino benzoic acid and coupling of diazonium salt to 2-fluorophenole, followed by alkylation with a bromoalkyl compound. The synthetized compounds were purified and their structures were confirmed by <sup>1</sup>H-NMR and <sup>13</sup>C-NMR studies.

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40

Al-Saffar, Rana Sami, Hind Ahmed Mahmoud, and Nabeel Sabeeh Othman. "Spectrophotometric Determination of Sulphamerazine Via Diazotization and Coupling with m-Hydroxyaniline." Pakistan Journal of Analytical & Environmental Chemistry 23, no. 1 (2022): 41–49. http://dx.doi.org/10.21743/pjaec/2022.01.04.

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A simple and accurate spectrophotometric method has been developed based on diazotization and coupling reactions. The method relied on the diazotization of sulphamerazine (SMEZ) via reaction with HNO2 obtained from the reaction of hydrochloric acid with sodium nitrite. The un-reacted nitrous acid destroyed via a reaction with sulphamic acid. The formed diazotized sulphamerazine (D-SMEZ) was coupled with m-hydroxylaniline to produce yellow azo dye, which gives the highest absorption at 450 nm. The formed azo dye is freely soluble in water and has good stability. The linearity is observed by dra

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41

Ma, Baoguang, Cheng Chen, Xiaojun Xie, et al. "Aminobenzoic acid functionalized graphene oxide as environment-friendly corrosion inhibitors for Q235 steel in HCl solution: experimental and DFT studies." Anti-Corrosion Methods and Materials 68, no. 3 (2021): 229–37. http://dx.doi.org/10.1108/acmm-03-2021-2449.

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Purpose The purpose of this study is to provide effective and environmental-friendly corrosion inhibitors derived from graphene oxide for Q235 steel. Design/methodology/approach Nontoxic and environment-friendly 4-aminobenzoic acid was used to functionalize graphene oxide via amidation and diazotization. The obtained amidation 4-aminobenzoic acid functionalized graphene oxide (PAGO) and diazotization 4-aminobenzoic acid functionalized graphene oxide (PDGO) were characterized by FTIR, Raman and TEM, while the inhibition efficiencies were analyzed by electrochemical impedance spectroscopy (EIS)

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42

Mhdi, Allaa Hussein, and Sadeem Subhi Abed. "Determination of Nifedipine drug in Pure and Pharmaceutical Preparations by Normal Flow Injection Analysis using Sulfamethaxazole Drug as Chromogenic Reagent." Pakistan Journal of Medical and Health Sciences 16, no. 8 (2022): 622–26. http://dx.doi.org/10.53350/pjmhs22168622.

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A highly sensitive and accurate spectrophotometric method including Technique ( Normal Flow injection analysis have been used for determined Nifedipine (NIF) drug in pure and dosage forms. This approach based on the response of drug with diazotized sulfamethoxazole (SMZ) to form colored product after diazotization of reagent and coupling reaction with drug The coloured chromogen suggests absorption maximum at 496 nm. The method of the line conditions of response had been investigated by (1) invariable chemical approach, by optimizing the impact of experimental variables (special bases, reagent

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43

Al-Uzri, Wasan Abdulamir, Mariam Jamal, and Hind Hadi. "Colorimetric Determination of Salbutamol Sulfate using Spectrophotometry-Continuous Flow Injection Technique in Pure and Pharmaceutical Forms." Iraqi Journal of Pharmaceutical Sciences ( P-ISSN 1683 - 3597 E-ISSN 2521 - 3512) 32, no. 1 (2023): 45–52. http://dx.doi.org/10.31351/vol32iss1pp45-52.

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Simple, precise and economic batch and flow injection analysis (FIA)-spectrophotometric methods have been established for simultaneous determination of salbutamol sulfate (SLB) in bulk powder and pharmaceutical forms. Both methods based on diazotization coupling reaction of SLB with another drug compound (sulfadimidine) as a safe and green diazotization agent in alkaline medium. At 444 nm, the maximum absorption of the orange azo-dye product was observed. A thorough investigation of all chemical and physical factors was conducted for batch and FIA procedures to achieve high sensitivity. Under

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44

Abdel-Khalek, M. M., M. S. Mahrous, H. G. Daabees, and Y. A. Beltagy. "Spectrophotometric Determination of Aminoglutethimide by Diazotization and Subsequent Coupling." Analytical Letters 26, no. 6 (1993): 1109–23. http://dx.doi.org/10.1080/00032719308019891.

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45

Alteemi, Hajir S., and Kassim H. Kadim. "Colorimetric Determination of Phenylephrine hydrochloride Drug by Diazotization Reaction." Journal of Physics: Conference Series 1664 (November 2020): 012097. http://dx.doi.org/10.1088/1742-6596/1664/1/012097.

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46

Pirrung, Michael C., and William L. Brown. "Diazotization of 1-aminocyclopropanecarboxylic acid. Solution chemistry of oxaspiropentanone." Journal of the American Chemical Society 112, no. 17 (1990): 6388–89. http://dx.doi.org/10.1021/ja00173a032.

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47

Fekri, Leila Zare, and Mohammad Nikpassand. "Ultrasound assisted diazotization and diazo coupling reactions using trichlorotriazine." Russian Journal of General Chemistry 84, no. 8 (2014): 1629–33. http://dx.doi.org/10.1134/s1070363214080313.

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48

Penchev, A., D. Simov, and N. Gadjev. "Diazotization of 2-amino-6-methoxybenzothiazole at elevated temperature." Dyes and Pigments 16, no. 1 (1991): 77–81. http://dx.doi.org/10.1016/0143-7208(91)87022-f.

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49

L'abbé, Gerrit, and Linda Beenaerts. "On the Diazotization of Deactivated 5-Amino-1,2,3-Triazoles." Bulletin des Sociétés Chimiques Belges 98, no. 6 (2010): 419–20. http://dx.doi.org/10.1002/bscb.19890980612.

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50

Liu, Dan, Jun Long Liu, Da Peng Zhou, Hong Mei Wang, and Zheng Ling Zhu. "Synthesis and Spectral Properties of Polymeric Dye from Waste Plastic." Advanced Materials Research 535-537 (June 2012): 1520–24. http://dx.doi.org/10.4028/www.scientific.net/amr.535-537.1520.

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Using waste expanded polystyrene as the raw material, the azo polymeric dye (I-III) were prepared via nitration, reduction, diazotization and coupling reactions. The structures of the intermediate products and the polymeric dyes obtained were characterized by the FTIR spectra. By UV-Vis absorption spectrum measurements, the relationship among the maximum absorption wavelength, molecular structure and color of polymeric dye was investigated.

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