{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T09:48:58Z","timestamp":1769507338454,"version":"3.49.0"},"reference-count":27,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2019,12,14]],"date-time":"2019-12-14T00:00:00Z","timestamp":1576281600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002641","name":"Konkuk University","doi-asserted-by":"publisher","award":["Konkuk University Researcher Fund 2019"],"award-info":[{"award-number":["Konkuk University Researcher Fund 2019"]}],"id":[{"id":"10.13039\/501100002641","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry and Energy","award":["20174010201490"],"award-info":[{"award-number":["20174010201490"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Dyeing and fastness properties of a series of 4-fluorosulfonylphenylazo-5-pyrazolone dyes on polyester were investigated in this study. The 4-nitrophenylazo-5-pyrazolone dyes were also synthesized to compare their dyeing and fastness properties on polyester with those of fluorosulfonyl-substituted analogues. The substantivity of 4-arylazo-5-pyrazolone derivatives containing a p-fluorosulfonyl group in the diazo component was lower than that of their nitro analogues which have a higher extinction coefficient and higher affinity because of the polar nitro group. They showed relatively hypsochromic color and lower chroma on polyester compared with their nitro analogues because of the relatively weaker electron-accepting power of the fluorosulfonyl group compared to the nitro group. Disperse dyeing of polyester with 4-fluorosulfonylphenylazo-5-pyrazolone disperse dyes achieved high color fastness and reduces the adverse environmental impact of the dyeing process by providing the option of performing alkali clearing instead of reductive clearing, which has high biological oxygen demand when discharged into the dyeing effluent and generates carcinogenic aromatic amines.<\/jats:p>","DOI":"10.3390\/ma12244209","type":"journal-article","created":{"date-parts":[[2019,12,16]],"date-time":"2019-12-16T05:19:38Z","timestamp":1576473578000},"page":"4209","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Dyeing of Polyester with 4-Fluorosulfonylphenylazo-5-pyrazolone Disperse Dyes and Application of Environment-Friendly Aftertreatment for Their High Color Fastness"],"prefix":"10.3390","volume":"12","author":[{"given":"Sanghyun","family":"Yoon","sequence":"first","affiliation":[{"name":"Department of Organic and Nano System Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Byunghun","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Organic and Nano System Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Md Morshedur","family":"Rahman","sequence":"additional","affiliation":[{"name":"Department of Organic and Nano System Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Santosh","family":"Kumar","sequence":"additional","affiliation":[{"name":"Division of Chemical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6656-7796","authenticated-orcid":false,"given":"Shekh Md","family":"Mamun Kabir","sequence":"additional","affiliation":[{"name":"Department of Wet Processing Engineering, Bangladesh University of Textiles, Dhaka 1208, Bangladesh"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joonseok","family":"Koh","sequence":"additional","affiliation":[{"name":"Department of Organic and Nano System Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea"},{"name":"Division of Chemical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,12,14]]},"reference":[{"key":"ref_1","unstructured":"McLoughlin, J., and Sabir, T. 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