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NLM15212246X |
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DE-627 |
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20231223061357.0 |
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231223s2004 xx ||||| 00| ||eng c |
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|a pubmed24n0507.xml
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|a (DE-627)NLM15212246X
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|a (NLM)15544366
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Steinbeck, Christian A
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Interactions of charged porphyrins with nonionic triblock copolymer hosts in aqueous solutions
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| 264 |
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1 |
|c 2004
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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| 338 |
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|a Band
|b nc
|2 rdacarrier
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| 500 |
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|a Date Completed 24.04.2006
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|a Date Revised 01.12.2018
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|a published: Print
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|a Citation Status MEDLINE
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|a The extent and locus of solubilization of guest and self-assembling surfactant host molecules in aqueous solutions are influenced by a variety of hydrophobic and hydrophilic interactions, as well as by more specific interactions between the various species present. By using a combination of two-dimensional heteronuclear 13C[1H] NMR correlation experiments with pulsed-gradient NMR diffusion and proton cross-relaxation measurements, the locations and distributions of porphyrin guest molecules have been established unambiguously with respect to the hydrophobic and hydrophilic moieties of a triblock copolymer species in solution. The interactions of tetra(4-sulfonatophenyl)porphyrin with the poly(propylene oxide) (PPO) and the poly(ethylene oxide) (PEO) segments of amphiphilic PEO-PPO-PEO triblock copolymer species have been measured as functions of solution conditions, including temperature and pH. The porphyrin/PEO-PPO-PEO interactions are established to be selective and adjustable according to the different temperature-dependent hydrophilicities or hydrophobicities of the PEO and PPO triblock copolymer components. Furthermore, such interactions influence the self-assembly properties of the block-copolymer amphiphiles in solution by stabilizing molecular porphyrin/PEO-PPO-PEO complexes well above the critical micellization temperature of the triblock copolymer species under otherwise identical conditions
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| 650 |
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|a Journal Article
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4 |
|a Research Support, U.S. Gov't, Non-P.H.S.
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| 650 |
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7 |
|a Micelles
|2 NLM
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|a PEO-PPO-PEO
|2 NLM
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| 650 |
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|a Polymers
|2 NLM
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|a Porphyrins
|2 NLM
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|a Propylene Glycols
|2 NLM
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|a Solutions
|2 NLM
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|a tetra(4-sulfonatophenyl)porphyrin
|2 NLM
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|a Water
|2 NLM
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| 650 |
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|a 059QF0KO0R
|2 NLM
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| 650 |
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|a polypropylene glycol
|2 NLM
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| 650 |
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|a 25322-69-4
|2 NLM
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| 650 |
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|a Polyethylene Glycols
|2 NLM
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| 650 |
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|a 3WJQ0SDW1A
|2 NLM
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| 700 |
1 |
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|a Hedin, Niklas
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chmelka, Bradley F
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 20(2004), 24 vom: 23. Nov., Seite 10399-412
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:20
|g year:2004
|g number:24
|g day:23
|g month:11
|g pages:10399-412
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|a GBV_USEFLAG_A
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|a SYSFLAG_A
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|a GBV_NLM
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|a GBV_ILN_350
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|a GBV_ILN_721
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|a AR
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|d 20
|j 2004
|e 24
|b 23
|c 11
|h 10399-412
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