{"title":"Fluorescent Polyimide Films with Covalently Incorporated Perylenediimide","authors":"Heesang Kim, and , Giseop Kwak*, ","doi":"10.1021/acsapm.4c01308","DOIUrl":null,"url":null,"abstract":"<p >Fluorescent polyimide films were manufactured using colorless, transparent polyimide (PI) as a matrix material and perylenediimide (PDI) as a covalently incorporated fluorophore. The matrix polymer was manufactured using fluorinated monomers of 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) and 2,2-bis(trifluoromethyl)benzidine. A slight excess of 6FDA was used to produce an acid anhydride-terminated polyamic acid (PAA) precursor. Amine-terminated PDI was prepared in advance through a high-temperature condensation reaction between perylene-3,4,9,10-tetracarboxylic acid dianhydride and two equivalent cycloaliphatic diamines. The acid anhydride-terminated precursor PAA was treated with the amine-terminated PDI to simultaneously extend the chain and confer fluorescence (FL), followed by chemical imidization to obtain fluorescent PIs. Well-featured PI films with a thickness of approximately 50 μm were fabricated via casting on glass slides and convection drying. The prepared PI films showed an elastic modulus of more than 4.4 GPa, a tensile strength of more than 81 MPa, a thermal decomposition temperature of more than 500 °C, at which a weight loss of 5% was observed, and a glass transition temperature of more than 306 °C. Moreover, the polymer films showed FL quantum efficiency of 5.74% or higher, with the FL color slightly differing depending on the cycloaliphatic diamine used in the synthesis of the PDI unit.</p>","PeriodicalId":7,"journal":{"name":"ACS Applied Polymer Materials","volume":null,"pages":null},"PeriodicalIF":4.4000,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Polymer Materials","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsapm.4c01308","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Fluorescent polyimide films were manufactured using colorless, transparent polyimide (PI) as a matrix material and perylenediimide (PDI) as a covalently incorporated fluorophore. The matrix polymer was manufactured using fluorinated monomers of 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) and 2,2-bis(trifluoromethyl)benzidine. A slight excess of 6FDA was used to produce an acid anhydride-terminated polyamic acid (PAA) precursor. Amine-terminated PDI was prepared in advance through a high-temperature condensation reaction between perylene-3,4,9,10-tetracarboxylic acid dianhydride and two equivalent cycloaliphatic diamines. The acid anhydride-terminated precursor PAA was treated with the amine-terminated PDI to simultaneously extend the chain and confer fluorescence (FL), followed by chemical imidization to obtain fluorescent PIs. Well-featured PI films with a thickness of approximately 50 μm were fabricated via casting on glass slides and convection drying. The prepared PI films showed an elastic modulus of more than 4.4 GPa, a tensile strength of more than 81 MPa, a thermal decomposition temperature of more than 500 °C, at which a weight loss of 5% was observed, and a glass transition temperature of more than 306 °C. Moreover, the polymer films showed FL quantum efficiency of 5.74% or higher, with the FL color slightly differing depending on the cycloaliphatic diamine used in the synthesis of the PDI unit.
期刊介绍:
ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers.
The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.