{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T19:24:06Z","timestamp":1789068246983,"version":"build-2803163510"},"reference-count":40,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2022,8,24]],"date-time":"2022-08-24T00:00:00Z","timestamp":1661299200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>A series of novolac phenolic polymeric networks (NPPN) were prepared via an acid-catalyzed polycondensation reaction of formaldehyde with chalcones possessing a p-phenolic OH group. When p-hydroxybenzaldehyde was treated with formaldehyde under the same conditions, a phenolic polymer (PP) was obtained. The resulting polymers were isolated in excellent yields (83\u201398%). Isolated polymers (NPPN, PP) were characterized using FTIR, TGA, and XRD. The results obtained from the TGA revealed that all prepared phenolic polymers have high thermal stability at high temperatures and can act as thermosetting materials. XRD data analysis showed a high degree of amorphousness for all polymers (78.8\u201389.2%). The electrical conductivities and resistivities of all chalcone-based phenolic networks (NPPN) and p-hydroxybenzaldehyde polymer (PP) were also determined. The physical characteristics obtained from the I-V curve showed that the conductivity of phenolic polymers has a wide range from ultimately negligible values of 0.09 \u00b5S\/cm up to 2.97 \u03bcS\/cm. The degree of polarization of the conjugated system\u2019s carbonyl group was attributed to high, low, or even no conductivity for all phenolic polymers since the electronic effects (inductive and mesomeric) could impact the polarization of the carbonyl group and, consequently, change the degree of the charge separation to show varied conductivity values.<\/jats:p>","DOI":"10.3390\/molecules27175409","type":"journal-article","created":{"date-parts":[[2022,8,24]],"date-time":"2022-08-24T23:48:58Z","timestamp":1661384938000},"page":"5409","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Novel Novolac Phenolic Polymeric Network of Chalcones: Synthesis, Characterization, and Thermal\u2013Electrical Conductivity Investigation"],"prefix":"10.3390","volume":"27","author":[{"given":"Essam Mohamed","family":"Sharshira","sequence":"first","affiliation":[{"name":"Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21321, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ahmed A.","family":"Ataalla","sequence":"additional","affiliation":[{"name":"Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21321, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohamed","family":"Hagar","sequence":"additional","affiliation":[{"name":"Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21321, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohammed","family":"Salah","sequence":"additional","affiliation":[{"name":"Department of Engineering Mathematics and Physics, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariusz","family":"Jaremko","sequence":"additional","affiliation":[{"name":"Smart-Health Initiative (SHI) and Red Sea Research Center (RSRC), Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), P.O. Box 4700, Thuwal 23955-6900, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2913-4825","authenticated-orcid":false,"given":"Nader","family":"Shehata","sequence":"additional","affiliation":[{"name":"Department of Engineering Mathematics and Physics, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt"},{"name":"Centre of Smart Materials, Nanotechnology and Photonics (CSMNP), SmartCI Research Centre, Alexandria University, Alexandria 21544, Egypt"},{"name":"USTAR Bioinnovations Centre, Faculty of Science, Utah State University, Logan, UT 84341, USA"},{"name":"Department of Physics, Kuwait College of Science and Technology (KCST), Doha Superior Rd., Jahraa 13133, Kuwait"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,8,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"12090","DOI":"10.1088\/1757-899X\/571\/1\/012090","article-title":"Synthesis a novel Schiff base and Chalcone derivatives compounds and using as flame retardant for unsaturated polyester and epoxy resins","volume":"571","author":"Jawad","year":"2019","journal-title":"IOP Conf. 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