Fluorescence Probing of Interior, Interfacial, and Exterior Regions in Solution Aggregates of Poly(ethylene oxide)− Poly(propylene oxide)−Poly(ethylene oxide) Triblock Copolymers
Fluorescence spectroscopy is used to probe local environments within regions of different polarity and hydrophobicity in aqueous aggregates of PEO109−PPO41−PEO109 triblock copolymers. These copolymer aggregates have well characterized microphases in aqueous solution. Concentrations and temperatures...
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| Veröffentlicht in: | Langmuir 2005-03, Vol.21 (5), p.1745-1752 |
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| creator | Grant, Christian D DeRitter, Michelle R Steege, Karen E Fadeeva, Tatiana A Castner, Edward W |
| description | Fluorescence spectroscopy is used to probe local environments within regions of different polarity and hydrophobicity in aqueous aggregates of PEO109−PPO41−PEO109 triblock copolymers. These copolymer aggregates have well characterized microphases in aqueous solution. Concentrations and temperatures for our studies are chosen such that the copolymers are in unimer, micellar, or micellar hydrogel forms. The observed fluorescence spectra and lifetimes from solutions individually labeled with each of the three coumarin probes report on the changes in the local polarity of the core, exterior, interfacial, and corona regions of these copolymer aggregates. This multiple fluorescence probe methodology will be straightforward to apply in general to problems in polymer and biopolymer aggregates, especially those that display strong hydrophobic effects. |
| doi_str_mv | 10.1021/la047560m |
| format | Article |
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These copolymer aggregates have well characterized microphases in aqueous solution. Concentrations and temperatures for our studies are chosen such that the copolymers are in unimer, micellar, or micellar hydrogel forms. The observed fluorescence spectra and lifetimes from solutions individually labeled with each of the three coumarin probes report on the changes in the local polarity of the core, exterior, interfacial, and corona regions of these copolymer aggregates. This multiple fluorescence probe methodology will be straightforward to apply in general to problems in polymer and biopolymer aggregates, especially those that display strong hydrophobic effects.</description><subject>Applied sciences</subject><subject>Coumarins - chemistry</subject><subject>Epoxy Compounds - chemistry</subject><subject>Exact sciences and technology</subject><subject>Molecular Structure</subject><subject>Organic polymers</subject><subject>Physicochemistry of polymers</subject><subject>Polyethylene Glycols - chemistry</subject><subject>Polymers - chemistry</subject><subject>Properties and characterization</subject><subject>Propylene Glycols - chemistry</subject><subject>Solution and gel properties</subject><subject>Solutions - chemistry</subject><subject>Spectrometry, Fluorescence</subject><subject>Temperature</subject><subject>Viscosity</subject><issn>0743-7463</issn><issn>1520-5827</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNptkM1qGzEURkVpady0i75A0aaQQKaVZqSRtQwmfxBaU7vdCllzNVUiS4M0BvsNus7D5IH6JJ0wJoaS1dXVOXxcPoQ-UvKFkpJ-9ZowwWuyfoUmlJek4NNSvEYTIlhVCFZXR-hdzneEEFkx-RYdUS7KitXTCXq89JuYIBsIBvA8xZULLY4W34QekovpbHxZbZz2Z1iHBl9sR4R_QOtiyNgFvIh-0w8LPm_bBK3uIT-lzKPfnUD_e-chAI5b18Dp3z8P43-XYvcfeMnHy-RWPpp7PIvdwNeQ8nv0xmqf4cN-HqOflxfL2XVx-_3qZnZ-W2jGRF9IYTmllugVM5LUUlpLwdZTxmxJjJCEEa6lHChYxhtCRd1wQg0VpWC24dUxOh1zTYo5J7CqS26t005Rop66V8_dD-6n0e02qzU0B3Nf9iB83gs6G-1t0sG4fPBqzkohq8ErRs_lHrbPXKd7VYtKcLWcL9S3q-vFr2pKFTnkapPVXdykMFTywoH_AEwmrCk</recordid><startdate>20050301</startdate><enddate>20050301</enddate><creator>Grant, Christian D</creator><creator>DeRitter, Michelle R</creator><creator>Steege, Karen E</creator><creator>Fadeeva, Tatiana A</creator><creator>Castner, Edward W</creator><general>American Chemical Society</general><scope>BSCLL</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20050301</creationdate><title>Fluorescence Probing of Interior, Interfacial, and Exterior Regions in Solution Aggregates of Poly(ethylene oxide)− Poly(propylene oxide)−Poly(ethylene oxide) Triblock Copolymers</title><author>Grant, Christian D ; DeRitter, Michelle R ; Steege, Karen E ; Fadeeva, Tatiana A ; Castner, Edward W</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a447t-97f511f0ab4c90699ff1ef6844f20c790405a99b4cef45d0176d501c17274fd53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Applied sciences</topic><topic>Coumarins - chemistry</topic><topic>Epoxy Compounds - chemistry</topic><topic>Exact sciences and technology</topic><topic>Molecular Structure</topic><topic>Organic polymers</topic><topic>Physicochemistry of polymers</topic><topic>Polyethylene Glycols - chemistry</topic><topic>Polymers - chemistry</topic><topic>Properties and characterization</topic><topic>Propylene Glycols - chemistry</topic><topic>Solution and gel properties</topic><topic>Solutions - chemistry</topic><topic>Spectrometry, Fluorescence</topic><topic>Temperature</topic><topic>Viscosity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Grant, Christian D</creatorcontrib><creatorcontrib>DeRitter, Michelle R</creatorcontrib><creatorcontrib>Steege, Karen E</creatorcontrib><creatorcontrib>Fadeeva, Tatiana A</creatorcontrib><creatorcontrib>Castner, Edward W</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><jtitle>Langmuir</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Grant, Christian D</au><au>DeRitter, Michelle R</au><au>Steege, Karen E</au><au>Fadeeva, Tatiana A</au><au>Castner, Edward W</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fluorescence Probing of Interior, Interfacial, and Exterior Regions in Solution Aggregates of Poly(ethylene oxide)− Poly(propylene oxide)−Poly(ethylene oxide) Triblock Copolymers</atitle><jtitle>Langmuir</jtitle><addtitle>Langmuir</addtitle><date>2005-03-01</date><risdate>2005</risdate><volume>21</volume><issue>5</issue><spage>1745</spage><epage>1752</epage><pages>1745-1752</pages><issn>0743-7463</issn><eissn>1520-5827</eissn><coden>LANGD5</coden><abstract>Fluorescence spectroscopy is used to probe local environments within regions of different polarity and hydrophobicity in aqueous aggregates of PEO109−PPO41−PEO109 triblock copolymers. These copolymer aggregates have well characterized microphases in aqueous solution. Concentrations and temperatures for our studies are chosen such that the copolymers are in unimer, micellar, or micellar hydrogel forms. The observed fluorescence spectra and lifetimes from solutions individually labeled with each of the three coumarin probes report on the changes in the local polarity of the core, exterior, interfacial, and corona regions of these copolymer aggregates. This multiple fluorescence probe methodology will be straightforward to apply in general to problems in polymer and biopolymer aggregates, especially those that display strong hydrophobic effects.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>15723468</pmid><doi>10.1021/la047560m</doi><tpages>8</tpages></addata></record> |
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| source | ACS Publications; MEDLINE |
| subjects | Applied sciences Coumarins - chemistry Epoxy Compounds - chemistry Exact sciences and technology Molecular Structure Organic polymers Physicochemistry of polymers Polyethylene Glycols - chemistry Polymers - chemistry Properties and characterization Propylene Glycols - chemistry Solution and gel properties Solutions - chemistry Spectrometry, Fluorescence Temperature Viscosity |
| title | Fluorescence Probing of Interior, Interfacial, and Exterior Regions in Solution Aggregates of Poly(ethylene oxide)− Poly(propylene oxide)−Poly(ethylene oxide) Triblock Copolymers |
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