| fullrecord |
[{"key": "dc.contributor.advisor", "value": "Helttunen, Kaisa", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Naulap\u00e4\u00e4, Julia", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Kangas, Aliisa", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2025-06-04T08:44:29Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2025-06-04T08:44:29Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2025", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/103064", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Kaliks[4]pyrrolit ovat kemiallisesti merkitt\u00e4v\u00e4 makrosyklien ryhm\u00e4, joka tunnetaan kyvyst\u00e4\u00e4n toimia monipuolisina supramolekulaarisina is\u00e4nt\u00e4rakenteina. Ne voivat muodostaa is\u00e4nt\u00e4-vieras-komplekseja sek\u00e4 ionisten yhdisteiden ett\u00e4 neutraalien molekyylien kanssa. Niiden konformaatiojoustavuus on keskeisess\u00e4 roolissa molekyylien tunnistuksessa, erityisesti anionien aiheuttamien rakennemuutosten kautta, jotka mahdollistavat ioniparien yhteistoiminnallisen sitoutumisen. Helpon synteesin, rakenteellisen muunneltavuuden ja vahvan sitoutumiskyvyn ansiosta kaliks[4]pyrrolit ovat nousseet lupaaviksi yhdisteiksi molekyylitunnistuksessa ja ymp\u00e4rist\u00f6n puhdistusteknologioissa. Niiden soveltamista vesipitoisiin ymp\u00e4rist\u00f6ihin rajoittaa kuitenkin heikko vesiliukoisuus, mink\u00e4 vuoksi funktionalisointia hydrofiilisill\u00e4 ryhmill\u00e4 on tutkittu yhteensopivuuden parantamiseksi vesipohjaisten j\u00e4rjestelmien kanssa.\n\nT\u00e4m\u00e4 pro gradu -tutkielma sis\u00e4lt\u00e4\u00e4 kirjallisuuskatsauksen is\u00e4nt\u00e4-vieras-kemiaan, keskittyen erityisesti kaliks[4]pyrroleihin. Katsauksessa k\u00e4sitell\u00e4\u00e4n n\u00e4iden yhdisteiden molekyylirakennetta, fysikaaliskemiallisia ominaisuuksia sek\u00e4 synteesistrategioita, mukaan lukien perinteiset ja vihre\u00e4n kemian mukaiset menetelm\u00e4t, joilla pyrit\u00e4\u00e4n v\u00e4hent\u00e4m\u00e4\u00e4n ymp\u00e4rist\u00f6kuormitusta. Lis\u00e4ksi tarkastellaan kaliks[4]pyrrolien soveltuvuutta ymp\u00e4rist\u00f6kemiaan, erityisesti ionisten ja neutraalien haitta-aineiden poistamiseen vesiliuoksista neste-neste- ja polymeerisorbenttipohjaisten uuttomenetelmien avulla.\n\nKokeellinen osio kuvaa kaliks[4]pyrrolien synteesi\u00e4 ja PEGylaatiota, jonka tavoitteena oli parantaa yhdisteiden vesiliukoisuutta. Yht\u00e4 onnistuneesti PEGyloitua kaliks[4]pyrrolia hy\u00f6dynnettiin misellimuodostuksessa yhdess\u00e4 ei-ionisen pinta-aktiivisen aineen kanssa. Muodostuneita supramolekulaarisia j\u00e4rjestelmi\u00e4 karakterisoitiin erilaisin analyyttisin menetelmin niiden rakenteen ja mahdollisen k\u00e4yt\u00f6n arvioimiseksi uuttosovelluksissa.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Calix[4]pyrroles are a chemically significant class of macrocycles, known for their ability to act as versatile supramolecular hosts capable of forming host-guest complexes with both ionic compounds and neutral molecules. Their conformational flexibility plays a central role in their molecular recognition behavior, particularly through anion-induced structural changes that enable cooperative binding of ion pairs. Due to their ease of synthesis, structural tunability, and strong binding affinities, calix[4]pyrroles have emerged as promising candidates for applications in molecular recognition and environmental remediation technologies. However, one of the main challenges hindering their broader application in aqueous environments is their generally poor water solubility. To address this, increasing attention has been directed toward functionalizing calix[4]pyrroles with hydrophilic groups to improve their compatibility with water-based systems.\n\nThis master\u2019s thesis presents a literature review on host-guest chemistry, with a specific focus on calix[4]pyrroles. It covers their molecular structure, physicochemical properties, and both conventional synthetic strategies and green chemistry approaches aimed at minimizing environmental impact. In addition, their role in environmental chemistry is explored, particularly regarding the removal of harmful ionic and neutral pollutants from aqueous solutions through liquid-liquid and polymer sorbent-based extraction methods.\n\nThe experimental part describes the synthesis of calix[4]pyrroles and their subsequent PEGylation. One successfully synthesized PEGylated calix[4]pyrrole was used in co-micellization with a non-ionic surfactant to form micellar assemblies. These supramolecular systems were characterized using various analytical techniques to evaluate their structure and potential as extraction media.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2025-06-04T08:44:29Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2025-06-04T08:44:29Z (GMT). No. of bitstreams: 0\n Previous issue date: 2025", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "102", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": null, "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "calix[4]pyrroles", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Calix[4]pyrroles in environmental and green chemistry applications", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202506044868", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Kemian laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Chemistry", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": null, "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": null, "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Orgaaninen kemia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Organic Chemistry", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.copyright", "value": "\u00a9 The Author(s)", "language": "fi", "element": "rights", "qualifier": "copyright", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.yso", "value": "uutto", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "saasteet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ymp\u00e4rist\u00f6kemia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "orgaaninen kemia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "vihre\u00e4 kemia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ionit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "supramolekulaarinen kemia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "synteesi", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
|