{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,12]],"date-time":"2026-07-12T03:31:48Z","timestamp":1783827108422,"version":"3.55.0"},"reference-count":67,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2017,8,3]],"date-time":"2017-08-03T00:00:00Z","timestamp":1501718400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002383","name":"King Saud University","doi-asserted-by":"publisher","award":["Deanship of Scientific Research"],"award-info":[{"award-number":["Deanship of Scientific Research"]}],"id":[{"id":"10.13039\/501100002383","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Three phosphate esters 1\u20133 were successfully synthesized from the reaction of 2-, 3- and 4-hydroxybenzaldehyde with phosphoryl chloride. Reactions of 1\u20133 with benzidine in the presence of glacial acetic acid gave the corresponding novel phosphorus organic polymers 4\u20136 containing the azomethane linkage. The structures of the synthesized compounds were confirmed by Fourier transform infrared spectroscopy, nuclear magnetic resonance and elemental analysis. Interesting physiochemical properties for the polymeric materials 4\u20136 were observed using a combination of several techniques such as gel permeation chromatography, scanning electron microscopy, Brunauer\u2013Emmett\u2013Teller and nitrogen adsorption\u2013desorption isotherm, Barrett\u2013Joyner\u2013Halenda and H-sorb 2600 analyzer. The mesoporous polymers 4\u20136 exhibit tunable porosity with Brunauer\u2013Emmett\u2013Teller surface area (SABET = 24.8\u201330 m2\u00b7g\u20131), pore volume (0.03\u20130.05 cm3\u00b7g\u20131) and narrow pore size distribution, in which the average pore size was 2.4\u20132.8 nm. Polymers 4\u20136 were found to have high gas storage capacity and physico-chemical stability, particularly at a high pressure. At 323 K and 50 bars, polymers 4\u20136 have remarkable carbon dioxide uptake (up to 82.1 cm3\u00b7g\u20131) and a low hydrogen uptake (up to 7.4 cm3\u00b7g\u20131). The adsorption capacity of gasses for polymer 5 was found to be higher than those for polymers 4 and 6.<\/jats:p>","DOI":"10.3390\/polym9080336","type":"journal-article","created":{"date-parts":[[2017,8,3]],"date-time":"2017-08-03T09:47:19Z","timestamp":1501753639000},"page":"336","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":38,"title":["New Eco-Friendly Phosphorus Organic Polymers as Gas Storage Media"],"prefix":"10.3390","volume":"9","author":[{"given":"Dina","family":"Ahmed","sequence":"first","affiliation":[{"name":"Department of Chemistry, College of Science, Tikrit University, Tikrit, Iraq"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6675-3126","authenticated-orcid":false,"given":"Gamal","family":"El-Hiti","sequence":"additional","affiliation":[{"name":"Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emad","family":"Yousif","sequence":"additional","affiliation":[{"name":"Department of Chemistry, College of Science, Al-Nahrain University, Baghdad 64021, Iraq"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ayad","family":"Hameed","sequence":"additional","affiliation":[{"name":"Department of Chemistry, College of Science, Tikrit University, Tikrit, Iraq"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mustafa","family":"Abdalla","sequence":"additional","affiliation":[{"name":"Department of Chemistry, College of Science, Al-Nahrain University, Baghdad 64021, Iraq"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2017,8,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1173","DOI":"10.1039\/c1sc00100k","article-title":"Chemical tuning of CO2 sorption in robust nanoporous organic polymers","volume":"2","author":"Dawson","year":"2011","journal-title":"Chem. 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