{"id":{"repo_id":"unt","oai_identifier":"info:ark/67531/metadc4314"},"canonical_url":"https://search.dev.ndltd.org/etd/unt/info:ark/67531/metadc4314","repository":{"repo_id":"unt","name":"University of North Texas","base_url":"https://digital.library.unt.edu/oai/"},"display":{"title":"Design and Synthesis of Novel Cage-Functionalized Crown Ethers: A New Class of Ag Complexants.","abstract":"Three different types of cage crown ethers have been prepared and their complexation properties with Ag(I) have been studied. Atomic absorption, fluorescence quenching, and UV absorption have been used to study the interaction between the hosts (cage crown ethers) and guests (Ag+). For the cage-annulated crown ethers that contain aromatic rings, cation-π and π-π interactions may contribute significantly to the overall complexation ability of the host system. Piperazine groups may cooperate, and the piperazine nitrogen atoms provide unshared electrons, which may form a complex with Ag+. In addition, relatively soft donor atoms (e.g., Br) are well-suited for complexation with Ag+, which is a softer Lewis acid than alkali metal cations.","abstract_html":"Three different types of cage crown ethers have been prepared and their complexation properties with Ag(I) have been studied. Atomic absorption, fluorescence quenching, and UV absorption have been used to study the interaction between the hosts (cage crown ethers) and guests (Ag+). For the cage-annulated crown ethers that contain aromatic rings, cation-π and π-π interactions may contribute significantly to the overall complexation ability of the host system. Piperazine groups may cooperate, and the piperazine nitrogen atoms provide unshared electrons, which may form a complex with Ag+. In addition, relatively soft donor atoms (e.g., Br) are well-suited for complexation with Ag+, which is a softer Lewis acid than alkali metal cations.","abstract_has_math":false,"creators":["Lai, Huiguo"],"institution":"University of North Texas","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Omary, Mohammad","Marchand, Alan P."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2003,"date_issued":"2003-08","date_published":"2003-08","updated_at":"2026-07-24T05:35:09Z","subjects":["Crown ethers.","complexation","crown ethers","cage compounds","fluorescence quenching","atomic absorption"],"languages":["English"],"rights":["Public","Copyright","Lai, Huiguo","Copyright is held by the author, unless otherwise noted. All rights reserved."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["oclc: 53362722","https://digital.library.unt.edu/ark:/67531/metadc4314/","ark: ark:/67531/metadc4314"],"render_values":[{"text":"oclc: 53362722","href":null,"code":true},{"text":"https://digital.library.unt.edu/ark:/67531/metadc4314/","href":"https://digital.library.unt.edu/ark:/67531/metadc4314/","code":true},{"text":"ark: ark:/67531/metadc4314","href":null,"code":true}]}]},"links":{"outbound_url":"https://doi.org/10.12794/metadc4314","outbound_label":"DOI","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Omary, Mohammad","Marchand, Alan P."]},{"key":"dc:creator","label":"Author","values":["Lai, Huiguo"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2003-08"]},{"key":"dc:publisher","label":"Institution","values":["University of North Texas"]},{"key":"dc:type","label":"Dc Type","values":["Thesis or Dissertation"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Crown ethers.","complexation","crown ethers","cage compounds","fluorescence quenching","atomic absorption"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]},{"key":"dc:rights","label":"Dc Rights","values":["Public","Copyright","Lai, Huiguo","Copyright is held by the author, unless otherwise noted. All rights reserved."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["oclc: 53362722","doi: 10.12794/metadc4314","https://digital.library.unt.edu/ark:/67531/metadc4314/","ark: ark:/67531/metadc4314"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Three different types of cage crown ethers have been prepared and their complexation properties with Ag(I) have been studied. Atomic absorption, fluorescence quenching, and UV absorption have been used to study the interaction between the hosts (cage crown ethers) and guests (Ag+). For the cage-annulated crown ethers that contain aromatic rings, cation-π and π-π interactions may contribute significantly to the overall complexation ability of the host system. Piperazine groups may cooperate, and the piperazine nitrogen atoms provide unshared electrons, which may form a complex with Ag+. In addition, relatively soft donor atoms (e.g., Br) are well-suited for complexation with Ag+, which is a softer Lewis acid than alkali metal cations."]},{"key":"dc:format","label":"Dc Format","values":["Text"]},{"key":"dc:title","label":"Title","values":["Design and Synthesis of Novel Cage-Functionalized Crown Ethers: A New Class of Ag Complexants."]}]}],"canonical_facts":{"dc:contributor":["Omary, Mohammad","Marchand, Alan P."],"dc:creator":["Lai, Huiguo"],"dc:date":["2003-08"],"dc:description":["Three different types of cage crown ethers have been prepared and their complexation properties with Ag(I) have been studied. Atomic absorption, fluorescence quenching, and UV absorption have been used to study the interaction between the hosts (cage crown ethers) and guests (Ag+). For the cage-annulated crown ethers that contain aromatic rings, cation-π and π-π interactions may contribute significantly to the overall complexation ability of the host system. Piperazine groups may cooperate, and the piperazine nitrogen atoms provide unshared electrons, which may form a complex with Ag+. In addition, relatively soft donor atoms (e.g., Br) are well-suited for complexation with Ag+, which is a softer Lewis acid than alkali metal cations."],"dc:format":["Text"],"dc:identifier":["oclc: 53362722","doi: 10.12794/metadc4314","https://digital.library.unt.edu/ark:/67531/metadc4314/","ark: ark:/67531/metadc4314"],"dc:language":["English"],"dc:publisher":["University of North Texas"],"dc:rights":["Public","Copyright","Lai, Huiguo","Copyright is held by the author, unless otherwise noted. All rights reserved."],"dc:subject":["Crown ethers.","complexation","crown ethers","cage compounds","fluorescence quenching","atomic absorption"],"dc:title":["Design and Synthesis of Novel Cage-Functionalized Crown Ethers: A New Class of Ag Complexants."],"dc:type":["Thesis or Dissertation"]},"updated_at":"2026-07-24T05:35:09Z"}