{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,3]],"date-time":"2026-03-03T17:18:11Z","timestamp":1772558291012,"version":"3.50.1"},"reference-count":67,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2022,10,25]],"date-time":"2022-10-25T00:00:00Z","timestamp":1666656000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Research Foundation of Korea (NRF)","award":["2021R1I1A3060098"],"award-info":[{"award-number":["2021R1I1A3060098"]}]},{"name":"National Research Foundation of Korea (NRF)","award":["NRF-2021R1I1A3059777"],"award-info":[{"award-number":["NRF-2021R1I1A3059777"]}]},{"name":"National Research Foundation of Korea (NRF)","award":["4199990414196"],"award-info":[{"award-number":["4199990414196"]}]},{"name":"National Research Foundation of Korea (NRF)","award":["P0017531"],"award-info":[{"award-number":["P0017531"]}]},{"name":"Brain Korea 21 Plus Program","award":["2021R1I1A3060098"],"award-info":[{"award-number":["2021R1I1A3060098"]}]},{"name":"Brain Korea 21 Plus Program","award":["NRF-2021R1I1A3059777"],"award-info":[{"award-number":["NRF-2021R1I1A3059777"]}]},{"name":"Brain Korea 21 Plus Program","award":["4199990414196"],"award-info":[{"award-number":["4199990414196"]}]},{"name":"Brain Korea 21 Plus Program","award":["P0017531"],"award-info":[{"award-number":["P0017531"]}]},{"DOI":"10.13039\/501100003661","name":"Korea Institute for Advancement of Technology","doi-asserted-by":"publisher","award":["2021R1I1A3060098"],"award-info":[{"award-number":["2021R1I1A3060098"]}],"id":[{"id":"10.13039\/501100003661","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003661","name":"Korea Institute for Advancement of Technology","doi-asserted-by":"publisher","award":["NRF-2021R1I1A3059777"],"award-info":[{"award-number":["NRF-2021R1I1A3059777"]}],"id":[{"id":"10.13039\/501100003661","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003661","name":"Korea Institute for Advancement of Technology","doi-asserted-by":"publisher","award":["4199990414196"],"award-info":[{"award-number":["4199990414196"]}],"id":[{"id":"10.13039\/501100003661","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003661","name":"Korea Institute for Advancement of Technology","doi-asserted-by":"publisher","award":["P0017531"],"award-info":[{"award-number":["P0017531"]}],"id":[{"id":"10.13039\/501100003661","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>In this study, a novel diamine monomer containing ester and phenyl moieties, 1,2-diphenylethane-1,2-diyl bis(4-aminobenzoate) (1,2-DPEDBA), was synthesized through a three-step reaction. Using this diamine, a novel polyimide (PI) film was prepared with 4,4\u2032-(hexafluoroisopropylidene)diphthalic anhydride (6-FDA) as a counter dianhydride through a typical two-step chemical imidization. For comparison, poly(pyromellitic dianhydride-co-4,4\u2032-oxydianiline) (PMDA-ODA PI) was also synthesized via thermal imidization. The resulting 6-FDA-DPEDBA PI film was not only soluble in common polar solvents with high boiling points, such as N,N-dimethylacetamide (DMAc) and N,N-dimethylformamide (DMF), but also soluble in common low-boiling-point polar solvents, such as chloroform (CHCl3) and dichloromethane (CH2Cl2), at room temperature. The resulting novel PI showed a 5% weight loss temperature (T5d) at 360 \u00b0C under a nitrogen atmosphere. The resulting PI film was colorless and transparent with a transmittance of 87.1% in the visible light region ranging from 400 to 760 nm. The water absorption of the novel PI film was of 1.78%. The PI film also possessed a good moisture barrier and hydrophobicity. Furthermore, the resulting PI film displayed a low dielectric constant of 2.17 at 106 Hz at room temperature. In conclusion, the novel PI film exhibited much better optical transparency, lower moisture absorption, and a lower dielectric constant as well as better solubility than the PMDA-ODA PI film, which is insoluble in any solvent, although its thermal stability is not better than that of PMDA-ODA PI.<\/jats:p>","DOI":"10.3390\/polym14214504","type":"journal-article","created":{"date-parts":[[2022,10,26]],"date-time":"2022-10-26T05:11:33Z","timestamp":1666761093000},"page":"4504","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["A Novel Diamine Containing Ester and Diphenylethane Groups for Colorless Polyimide with a Low Dielectric Constant and Low Water Absorption"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7772-5347","authenticated-orcid":false,"given":"Jun Seok","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Polymer Science and Engineering, School of Chemical Engineering, Pusan National University, Busan 46241, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yong-Zhu","family":"Yan","sequence":"additional","affiliation":[{"name":"Department of Polymer Science and Engineering, School of Chemical Engineering, Pusan National University, Busan 46241, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sung Soo","family":"Park","sequence":"additional","affiliation":[{"name":"Division of Advanced Materials Engineering, Dong-Eui University, Busan 47340, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Suk-kyun","family":"Ahn","sequence":"additional","affiliation":[{"name":"Department of Polymer Science and Engineering, School of Chemical Engineering, Pusan National University, Busan 46241, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4597-918X","authenticated-orcid":false,"given":"Chang-Sik","family":"Ha","sequence":"additional","affiliation":[{"name":"Department of Polymer Science and Engineering, School of Chemical Engineering, Pusan National University, Busan 46241, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1806070","DOI":"10.1002\/adma.201806070","article-title":"Recent progress in aromatic polyimide dielectrics for organic electronic devices and circuits","volume":"31","author":"Ji","year":"2019","journal-title":"Adv. Mat."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Saha, H.N., Mandal, A., and Sinha, A. (2017, January 9\u201311). Recent trends in the internet of things. Proceedings of the 2017 IEEE 7th Annual Computing and Communication Workshop and Conference (CCWC), Las Vegas, NV, USA.","DOI":"10.1109\/CCWC.2017.7868439"},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Lvov, V.A., Senatov, F.S., Veveris, A.A., Skrybykina, V.A., and D\u00edaz Lantada, A. (2022). Auxetic metamaterials for biomedical devices: Current Situation, main challenges, and research trends. Materials, 15.","DOI":"10.3390\/ma15041439"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"11692","DOI":"10.1364\/OE.25.011692","article-title":"High-Fidelity Phase and amplitude control of phase-only computer generated holograms using conjugate gradient minimisation","volume":"25","author":"Bowman","year":"2017","journal-title":"Opt. Express"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"5485","DOI":"10.1109\/TII.2021.3120511","article-title":"AF Relaying secrecy performance prediction for 6G mobile communication networks in industry 5.0","volume":"18","author":"Xu","year":"2022","journal-title":"IEEE Trans. Ind. Inform."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"5971","DOI":"10.1109\/JIOT.2018.2863267","article-title":"Rate and energy efficiency improvements for 5G-based IoT with simultaneous transfer","volume":"6","author":"Liu","year":"2019","journal-title":"IEEE Internet Things J."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1806","DOI":"10.1002\/pola.23949","article-title":"New colorless substrates based on polynorbornene-chlorinated polyimide copolymers and their application for flexible displays","volume":"48","author":"Choi","year":"2010","journal-title":"J. Polym. Sci. Part A Polym. Chem."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1889\/1.1830853","article-title":"6.3: Thin glass-polymer systems as flexible substrates for displays","volume":"33","author":"Weber","year":"2002","journal-title":"SID Symp. Dig. Tech. Pap."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1642","DOI":"10.1889\/1.2036329","article-title":"54.4: 4.1 inch Top-emission AMOLED on flexible metal foil","volume":"36","author":"Shin","year":"2005","journal-title":"SID Symp. Dig. Tech. Pap."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"107700","DOI":"10.1016\/j.compscitech.2019.107700","article-title":"Fluorinated polyimide with polyhedral oligomeric silsesquioxane Aggregates: Toward low dielectric constant and high toughness","volume":"181","author":"Chen","year":"2019","journal-title":"Compos. Sci. Technol."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1900505","DOI":"10.1002\/mame.201900505","article-title":"Low-dielectric constant and low-temperature curable polyimide\/POSS nanocomposites","volume":"304","author":"Huang","year":"2019","journal-title":"Macromol. Mater. Eng."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.polymer.2015.07.026","article-title":"Optically transparent aromatic poly (ester imide) s with low coefficients of thermal expansion (1). Self-orientation behavior during solution casting process and substituent effect","volume":"74","author":"Hasegawa","year":"2015","journal-title":"Polymer"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"123115","DOI":"10.1016\/j.polymer.2020.123115","article-title":"Ultra-low dielectric properties of porous polyimide thin films fabricated by using the two kinds of templates with different particle sizes","volume":"212","author":"Kourakata","year":"2021","journal-title":"Polymer"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"8774","DOI":"10.1021\/acsami.6b14654","article-title":"Far-UV annealed inkjet-printed In2O3 semiconductor layers for thin-film transistors on a flexible polyethylene naphthalate substrate","volume":"9","author":"Eiroma","year":"2017","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"11885","DOI":"10.1039\/D2RA01488B","article-title":"Stepwise copolymerization of polybenzimidazole for a low dielectric constant and ultrahigh heat resistance","volume":"12","author":"Zhong","year":"2022","journal-title":"RSC Adv."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"365","DOI":"10.1021\/ma502326v","article-title":"Preparation of solution-processable reduced graphene oxide\/polybenzoxazole nanocomposites with improved dielectric properties","volume":"48","author":"Chen","year":"2015","journal-title":"Macromolecules"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"4301","DOI":"10.1021\/ma047353t","article-title":"Nanopore formation in a polyphenylene low-k dielectric","volume":"38","author":"Silverstein","year":"2005","journal-title":"Macromolecules"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"907","DOI":"10.1016\/j.progpolymsci.2012.02.005","article-title":"Advanced polyimide materials: Syntheses, physical properties and applications","volume":"37","author":"Liaw","year":"2012","journal-title":"Prog. Polym. Sci."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"711","DOI":"10.1016\/0032-3950(77)90131-9","article-title":"Aromatic polyimides as charge transfer complexes","volume":"19","author":"Kotov","year":"1977","journal-title":"Polym. Sci. USSR"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"69","DOI":"10.1295\/polymj.29.69","article-title":"Coloration of aromatic polyimides and electronic properties of their source materials","volume":"29","author":"Ando","year":"1997","journal-title":"Polym. J."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Crawford, G.P. (2005). Flexible Flat Panel Displays, John Wiley & Sons Ltd.","DOI":"10.1002\/0470870508"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"4601","DOI":"10.1021\/acs.macromol.9b00136","article-title":"Facile strategy for intrinsic low-k dielectric polymers: Molecular design based on secondary relaxation behavior","volume":"52","author":"Qian","year":"2019","journal-title":"Macromolecules"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"3278","DOI":"10.1021\/acssuschemeng.0c08959","article-title":"High performance biomass-based polyimides for flexible electronic applications","volume":"9","author":"Chen","year":"2021","journal-title":"ACS Sustain. Chem. Eng."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"290","DOI":"10.1016\/j.compositesb.2018.11.029","article-title":"Towards solution-processable, thermally robust, transparent polyimide-chain-end tethered organosilicate nanohybrids","volume":"163","author":"Nam","year":"2019","journal-title":"Compos. Part B Eng."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"7753","DOI":"10.1039\/C7RA13600E","article-title":"Materials with low dielectric constant and loss and good thermal properties prepared by introducing perfluorononenyl pendant groups onto poly(ether ether ketone)","volume":"8","author":"Sun","year":"2018","journal-title":"RSC Adv."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"6009","DOI":"10.1016\/j.polymer.2009.10.022","article-title":"Synthesis and characterization of highly optical transparent and low dielectric constant fluorinated polyimides","volume":"50","author":"Tao","year":"2009","journal-title":"Polymer"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"362","DOI":"10.1021\/acsapm.0c01141","article-title":"Correlating the molecular structure of polyimides with the dielectric constant and dissipation factor at a high frequency of 10 GHz","volume":"3","author":"Kuo","year":"2021","journal-title":"ACS Appl. Polym. Mater."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Nam, K.-H., Choi, H.K., Yeo, H., You, N.-H., Ku, B.-C., and Yu, J. (2018). Molecular design and property prediction of sterically confined polyimides for thermally stable and transparent materials. Polymers, 10.","DOI":"10.3390\/polym10060630"},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Hasegawa, M., and Hishiki, T. (2020). Poly (ester imide) s possessing low coefficients of thermal expansion and low water absorption (V). effects of ester-linked diamines with different lengths and substituents. Polymers, 12.","DOI":"10.3390\/polym12040859"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"110206","DOI":"10.1016\/j.eurpolymj.2020.110206","article-title":"Ultra-low dielectric constant polyimides: Combined efforts of fluorination and micro-branched crosslink structure","volume":"143","author":"Han","year":"2021","journal-title":"Eur. Polym. J."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"125184","DOI":"10.1016\/j.polymer.2022.125184","article-title":"Investigation of the structure\u2013dielectric relationship of polyimides with ultralow dielectric constant and dissipation factors using density functional theory","volume":"256","author":"Chen","year":"2022","journal-title":"Polymer"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"6981","DOI":"10.1007\/s11664-021-09192-0","article-title":"Soluble polyimides containing bulky rigid terphenyl groups with low dielectric constant and high thermal stability","volume":"50","author":"Zheng","year":"2021","journal-title":"J. Electron. Mater."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"4413","DOI":"10.1002\/pola.26855","article-title":"Soluble and transparent polyimides from unsymmetrical diamine containing two trifluoromethyl groups","volume":"51","author":"Kim","year":"2013","journal-title":"J. Polym. Sci. Part A Polym. Chem."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"12807","DOI":"10.1039\/C7TC04220E","article-title":"Intrinsic low dielectric constant polyimides: Relationship between molecular structure and dielectric properties","volume":"5","author":"Bei","year":"2017","journal-title":"J. Mater. Chem. C"},{"key":"ref_35","doi-asserted-by":"crossref","unstructured":"Zhang, F., Li, J., Liu, F., Zhang, G., Sun, R., and Wong, C. (2019, January 12\u201315). Intrinsic low dielectric constant and low dielectric loss polyimides: The effect of molecular structure. Proceedings of the 2019 20th International Conference on Electronic Packaging Technology (ICEPT), Hong Kong, China.","DOI":"10.1109\/ICEPT47577.2019.245306"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"5545","DOI":"10.1021\/ol802351r","article-title":"9,10,19,20-Tetraarylporphycenes","volume":"10","author":"Anju","year":"2008","journal-title":"Org. Lett."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"16","DOI":"10.1016\/j.jchas.2015.10.019","article-title":"Hazards associated with laboratory scale hydrogenations","volume":"23","author":"Chandra","year":"2016","journal-title":"J. Chem. Health Saf."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"831","DOI":"10.1080\/09276440.2016.1180497","article-title":"Polyimide\/hollow silica sphere hybrid films with low dielectric constant","volume":"23","author":"Park","year":"2016","journal-title":"Compos. Interfaces"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"1063","DOI":"10.1002\/pi.5152","article-title":"Solution-processable colorless polyimides with ultralow coefficients of thermal expansion for optoelectronic applications","volume":"65","author":"Hasegawa","year":"2016","journal-title":"Polym. Int."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"1860","DOI":"10.3390\/molecules17021860","article-title":"An efficient three component one-pot synthesis of 5-amino-7-aryl-7,8-dihydro-[1,2,4] triazolo[4,3-a]-pyrimidine-6-carbonitriles","volume":"17","author":"Ablajan","year":"2012","journal-title":"Molecules"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"502","DOI":"10.1016\/j.polymer.2016.11.062","article-title":"Thermomechanical and optical properties of molecularly controlled polyimides derived from ester derivatives","volume":"108","author":"Nam","year":"2017","journal-title":"Polymer"},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"501","DOI":"10.1177\/0954008316650014","article-title":"Synthesis and characterization of low-CTE polyimide films containing trifluoromethyl groups with water-repellant characteristics","volume":"29","author":"Chen","year":"2017","journal-title":"High Perform. Polym."},{"key":"ref_43","doi-asserted-by":"crossref","unstructured":"Hasegawa, M. (2017). Development of solution-processable, optically transparent polyimides with ultra-low linear coefficients of thermal expansion. Polymers, 9.","DOI":"10.3390\/polym9100520"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"588","DOI":"10.1002\/pi.5555","article-title":"Effects of crosslinking agents on the physical properties of polyimide\/amino-functionalized graphene oxide hybrid films","volume":"67","author":"Jeong","year":"2018","journal-title":"Polym. Int."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"5049","DOI":"10.1016\/0032-3861(96)00365-5","article-title":"Organo-soluble polyimides: Synthesis and polymerization of 2,2\u2032-disubstituted-4,4\u2032,5,5\u2032-biphenyltetracarboxylic dianhydrides","volume":"37","author":"Harris","year":"1996","journal-title":"Polymer"},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"2486","DOI":"10.1002\/app.20173","article-title":"Synthesis and characterization of new soluble poly (ester-imide) s containing noncoplanar 2,2\u2032-dimethyl-4,4\u2032-biphenylene Unit","volume":"92","author":"Liaw","year":"2004","journal-title":"J. Appl. Polym. Sci."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"1800313","DOI":"10.1002\/macp.201800313","article-title":"Recent Trends on Transparent colorless polyimides with balanced thermal and optical properties: Design and synthesis","volume":"220","author":"Tapaswi","year":"2019","journal-title":"Macromol. Chem. Phys."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"365","DOI":"10.1007\/s13233-021-9045-0","article-title":"Soluble polyimides derived from a novel aromatic diamine containing an imidazole unit and trifluoromethyl groups","volume":"29","author":"He","year":"2021","journal-title":"Macromol. Res."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"194","DOI":"10.1039\/C7RA12101F","article-title":"Synthesis and properties of soluble aromatic polyimides from novel 4{,}5-diazafluorene-containing dianhydride","volume":"8","author":"Deng","year":"2018","journal-title":"RSC Adv."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"012005","DOI":"10.1088\/1742-6596\/187\/1\/012005","article-title":"Alicyclic polyimides a colorless and thermally stable polymer for opto-electronic devices","volume":"187","author":"Matsumoto","year":"2009","journal-title":"J. Phys. Conf. Ser."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"4491","DOI":"10.1016\/S0032-3861(03)00434-8","article-title":"Polyimide\/POSS nanocomposites: Interfacial interaction, thermal properties and mechanical properties","volume":"44","author":"Huang","year":"2003","journal-title":"Polymer"},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"1056","DOI":"10.1002\/polb.10162","article-title":"Molecular dynamics in nanostructured polyimide\u2013silica hybrid materials and their thermal stability","volume":"40","author":"Bershtein","year":"2002","journal-title":"J. Polym. Sci. Part B Polym. Phys."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"1394","DOI":"10.1016\/j.eurpolymj.2012.05.015","article-title":"Preparation and properties of polyimide\/graphene oxide nanocomposite films with Mg ion crosslinker","volume":"48","author":"Kong","year":"2012","journal-title":"Eur. Polym. J."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"1802479","DOI":"10.1002\/smll.201802479","article-title":"Multifunctional, superelastic, and lightweight MXene\/polyimide aerogels","volume":"14","author":"Liu","year":"2018","journal-title":"Small"},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"3462","DOI":"10.1021\/acs.macromol.5b00432","article-title":"Transparent aromatic polyimides derived from thiophenyl-substituted benzidines with high refractive index and small birefringence","volume":"48","author":"Tapaswi","year":"2015","journal-title":"Macromolecules"},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"67574","DOI":"10.1039\/C5RA14526K","article-title":"Synthesis of novel biobased polyimides derived from isomannide with good optical transparency, solubility and thermal stability","volume":"5","author":"Yang","year":"2015","journal-title":"RSC Adv."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"378","DOI":"10.1016\/j.jallcom.2014.06.087","article-title":"Room temperature ferromagnetism with high magnetic moment and optical properties of Co doped ZnO nanorods synthesized by a solvothermal route","volume":"615","author":"Pal","year":"2014","journal-title":"J. Alloy. Compd."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"5566","DOI":"10.1021\/jp980730h","article-title":"Synthesis and growth of ZnO nanoparticles","volume":"102","author":"Meulenkamp","year":"1998","journal-title":"J. Phys. Chem. B"},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"5189","DOI":"10.1002\/pola.24318","article-title":"Synthesis of poly(N-9-ethylcarbazole-exo-norbornene-5,6-dicarboximide) for hole-transporting layer in hybrid organic light-emitting devices","volume":"48","author":"Choi","year":"2010","journal-title":"J. Polym. Sci. Part A Polym. Chem."},{"key":"ref_60","unstructured":"(2022, September 15). DuPont KAPTON Summary of Properties. Available online: https:\/\/www.dupont.com\/content\/dam\/dupont\/amer\/us\/en\/products\/ei-transformation\/documents\/EI-10142_Kapton-Summary-of-Properties.pdf."},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"283","DOI":"10.1016\/j.eurpolymj.2009.10.015","article-title":"Spontaneous molecular orientation of polyimides induced by thermal imidization (5). effect of ordered structure formation in polyimide precursors on CTE","volume":"46","author":"Ebisawa","year":"2010","journal-title":"Eur. Polym. J."},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"431","DOI":"10.1002\/pi.5525","article-title":"Optically transparent aromatic poly (ester imide) s with low coefficients of thermal expansion. 2: Efect of the introduction of alkyl-substituted p-biphenylene units","volume":"67","author":"Hasegawa","year":"2018","journal-title":"Polym. Int."},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"2481","DOI":"10.1039\/D1PY00084E","article-title":"Intrinsic high-k\u2013low-loss dielectric polyimides containing ortho-position aromatic nitrile moieties: Reconsideration on clausius\u2013mossotti equation","volume":"12","author":"Zhu","year":"2021","journal-title":"Polym. Chem."},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"3422","DOI":"10.1021\/acsapm.0c00488","article-title":"Thermally and mechanically stable polyimides as flexible substrates for organic field-effect transistors","volume":"2","author":"Chen","year":"2020","journal-title":"ACS Appl. Polym. Mater."},{"key":"ref_65","doi-asserted-by":"crossref","first-page":"S266","DOI":"10.1016\/j.cap.2010.11.057","article-title":"High mechanical and electrical reliability of bottom-gate microcrystalline silicon thin film transistors on polyimide substrate","volume":"1","author":"Huang","year":"2011","journal-title":"Curr. Appl. Phys."},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"1468","DOI":"10.1109\/JPROC.2005.851483","article-title":"A transparent, high barrier, and high heat substrate for organic electronics","volume":"93","author":"Yan","year":"2005","journal-title":"Proc. IEEE"},{"key":"ref_67","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1016\/S0079-6700(00)00043-5","article-title":"Low dielectric constant polymers for microelectronics","volume":"26","author":"Maier","year":"2001","journal-title":"Prog. Polym. Sci."}],"container-title":["Polymers"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2073-4360\/14\/21\/4504\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:02:04Z","timestamp":1760144524000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2073-4360\/14\/21\/4504"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,10,25]]},"references-count":67,"journal-issue":{"issue":"21","published-online":{"date-parts":[[2022,11]]}},"alternative-id":["polym14214504"],"URL":"https:\/\/doi.org\/10.3390\/polym14214504","relation":{},"ISSN":["2073-4360"],"issn-type":[{"value":"2073-4360","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,10,25]]}}}