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Nagendra B, Cozzolino A, Acocella MR, Daniel C, Rizzo P, Guerra G. Hydrogen Bonded Dimer of an Alcohol with the Derived Carboxylic Acid Triggering their Sorption by Nanoporous-crystalline PPO Films. Chemistry 2023; 29:e202301441. [PMID: 37401565 DOI: 10.1002/chem.202301441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 06/29/2023] [Indexed: 07/05/2023]
Abstract
Films exhibiting nanoporous-crystalline (NC) phases of poly(2,6-dimethyl-1,4-phenylene) oxide (PPO), which are highly effective to absorb apolar organic guest molecules, are also able to absorb polar molecules (like alcohols and carboxylic acids) but only from concentrated organic solutions. NC PPO films, which do not absorb alcohols and carboxylic acids from diluted aqueous solutions, exhibits a huge uptake (even above 30 wt %) of benzyl alcohol (BAL) and benzoic acid (BA), if BA is obtained by spontaneous room temperature oxidation of BAL in aqueous solution. This phenomenon is rationalized by an easy uptake, mainly by the PPO intrahelical crystalline empty channels, of a BAL/BA 1/1 hydrogen-bonded dimer. This huge uptake of BAL/BA dimer by NC PPO films, which is also fast for films exhibiting the orientation of the crystalline helices perpendicular to the film plane (c⊥ orientation), can be exploited for purification of water from BAL, when present in traces. High and fast sorption of a hydrogen bonded dimer and negligible sorption of the two separate compounds is possibly unprecedented for absorbent materials.
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Affiliation(s)
- Baku Nagendra
- Dipartimento di Chimica e Biologia "A.Zambelli", INSTM Research Unit, Università di Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy
| | - Antonietta Cozzolino
- Dipartimento di Chimica e Biologia "A.Zambelli", INSTM Research Unit, Università di Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy
| | - Maria Rosaria Acocella
- Dipartimento di Chimica e Biologia "A.Zambelli", INSTM Research Unit, Università di Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy
| | - Christophe Daniel
- Dipartimento di Chimica e Biologia "A.Zambelli", INSTM Research Unit, Università di Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy
| | - Paola Rizzo
- Dipartimento di Chimica e Biologia "A.Zambelli", INSTM Research Unit, Università di Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy
| | - Gaetano Guerra
- Dipartimento di Chimica e Biologia "A.Zambelli", INSTM Research Unit, Università di Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy
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Polymorphism of poly(2,6-dimethyl-1,4-phenylene) oxide (PPO): Co-crystalline and nanoporous-crystalline phases. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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High surface area polymer films by co-crystallization with low-molecular-mass guest molecules. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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