{"title":"Thermochromism of metallophthalein in acrylamide copolymers with pendant pyridine substituents","authors":"M. Nanasawa, Y. Min, M. Hirai","doi":"10.1016/0923-1137(94)00072-D","DOIUrl":null,"url":null,"abstract":"<div><p>The thermochromism of Ni(II) complexes of cresolphthalein dye was studied in pyridine-containing acrylamide copolymers with <em>N</em>-vinyl-pyrrolidone (VP) or <em>N</em>-isopropylacrylamide (IPA). Pendant pyridine moieties in the copolymers affect the sensitivity of color development and stability of color species. A large temperature dependence was obtained in the copolymer 2-acrylamido-<em>N</em>-3-pyridylpropanoamide pyridine with VP and the developed color was stable in copolymer of <em>N</em>-3-pyridylacrylamide with IPA.</p></div>","PeriodicalId":20864,"journal":{"name":"Reactive Polymers","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1995-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0923-1137(94)00072-D","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reactive Polymers","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/092311379400072D","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
The thermochromism of Ni(II) complexes of cresolphthalein dye was studied in pyridine-containing acrylamide copolymers with N-vinyl-pyrrolidone (VP) or N-isopropylacrylamide (IPA). Pendant pyridine moieties in the copolymers affect the sensitivity of color development and stability of color species. A large temperature dependence was obtained in the copolymer 2-acrylamido-N-3-pyridylpropanoamide pyridine with VP and the developed color was stable in copolymer of N-3-pyridylacrylamide with IPA.
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