{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T06:40:17Z","timestamp":1791268817955,"version":"4.1.0"},"reference-count":57,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2024,4,25]],"date-time":"2024-04-25T00:00:00Z","timestamp":1714003200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Investigation of chiroptical polymers in the solution phase is paramount for designing supramolecular architectures for photonic or biomedical devices. This work is devoted to the case study of poly(propylene oxide) (PPO) optical activity in several solvents: benzonitrile, carbon disulfide, chloroform, ethyl acetate, and p-dioxane. To attain information on the interactions in these systems, rheological testing was undertaken, showing distinct variations of the rheological parameters as a function of the solvent type. These aspects are also reflected in the refractive index dispersive behavior, from which linear and non-linear optical properties are extracted. To determine the circular birefringence and specific rotation of the PPO solutions, the alternative method of the channeled spectra was employed. The spectral data were correlated with the molecular modeling of the PPO structural unit in the selected solvents. Density functional theory (DFT) computational data indicated that the torsional potential energy\u2014related to the O1-C2-C3-O4 dihedral angle from the polymer repeating unit\u2014was hindered in solvation environments characterized by high polarity and the ability to interact via hydrogen bonding. This was in agreement with the optical characterization of the samples, which indicated a lower circular birefringence and specific rotation for the solutions of PPO in ethyl acetate and p-dioxane. Also, the shape of optical rotatory dispersion curves was slightly modified for PPO in these solvents compared with the other ones.<\/jats:p>","DOI":"10.3390\/ijms25094682","type":"journal-article","created":{"date-parts":[[2024,4,26]],"date-time":"2024-04-26T05:13:41Z","timestamp":1714108421000},"page":"4682","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["New Insights on Solvent-Induced Changes in Refractivity and Specific Rotation of Poly(propylene oxide) Systems Extracted from Channeled Spectra"],"prefix":"10.3390","volume":"25","author":[{"given":"Alexandru","family":"Zara","sequence":"first","affiliation":[{"name":"Faculty of Physics, \u201cAlexandru Ioan Cuza\u201d University, 700506 Iasi, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7707-9613","authenticated-orcid":false,"given":"Raluca Marinica","family":"Albu","sequence":"additional","affiliation":[{"name":"\u201cPetru Poni\u201d Institute of Macromolecular Chemistry, 700487 Iasi, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6792-9581","authenticated-orcid":false,"given":"Iuliana","family":"Stoica","sequence":"additional","affiliation":[{"name":"\u201cPetru Poni\u201d Institute of Macromolecular Chemistry, 700487 Iasi, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andreea Irina","family":"Barzic","sequence":"additional","affiliation":[{"name":"\u201cPetru Poni\u201d Institute of Macromolecular Chemistry, 700487 Iasi, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2474-5133","authenticated-orcid":false,"given":"Dan Gheorghe","family":"Dimitriu","sequence":"additional","affiliation":[{"name":"Faculty of Physics, \u201cAlexandru Ioan Cuza\u201d University, 700506 Iasi, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3708-9160","authenticated-orcid":false,"given":"Dana Ortansa","family":"Dorohoi","sequence":"additional","affiliation":[{"name":"Faculty of Physics, \u201cAlexandru Ioan Cuza\u201d University, 700506 Iasi, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,4,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2499","DOI":"10.1039\/D0QM00103A","article-title":"Chiral conducting polymer nanomaterials: Synthesis and applications in enantioselective recognition","volume":"4","author":"Zhou","year":"2020","journal-title":"Mater. 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