Nanocages derived from shell cross-linked micelle templates [14]

Journal of the American Chemical Society

Volumn 121, Issue 15, 1999, Pages 3805-3806

  Huang, Haiyong ^a,c   Remsen, Edward E ^b   Kowalewski, Tomasz ^a   Wooley, Karen L ^a  

^a WASHINGTON UNIVERSITY   (United States)

^b MONSANTO COMPANY   (United States)

^c UNION CARBIDE CORPORATION   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

NANOPARTICLE; POLYACRYLIC ACID; POLYELECTROLYTE;

CROSS LINKING; DRUG SYNTHESIS; LETTER; MICELLE; MICROENCAPSULATION; PARTICULATE MATTER;

EID: 0033594525     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja983610w     Document Type: Letter

References (20)

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12. 170 (subscripts denote the numbers of monomer repeat units in each block), was prepared by the hydrolysis of poly(isoprene-b-tert-butyl acrylate) copolymer precursor, which was synthesized by sequential anionic polymerization of isoprene using sec-butyllithium initiator in hexane at room temperature, followed by addition of diphenylethylene and then polymerization of tert-butyl acrylate in hexane/tetrahydrofuran containing lithium chloride at -78 °C. Approximately 95% of the isoprene repeat units were of cis-1,4-microstructure. The hydrolysis of the tert-butyl esters by heating the diblock polymers in 1,4-dioxane containing concentrated HCl at reflux caused about 30% of the isoprene double bonds to undergo hydrochlorination, with 60% of the cis-1,4-isoprene repeat units remaining intact.
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18. -1.
19. The experimental and computational procedures used for DLS analysis were described previously: Huang, H.; Kowalewski, T.; Remsen, E. E.; Gertzmann, G.; Wooley, K. L. J. Am. Chem. Soc. 1997, 119, 11653.
20. h), which was no longer detected after ozonolysis. The loss of the larger particles was likely due to swelling of the resulting nanocapsules to a diameter greater than 200 nm the cutoff of the membrane used for filtration (0.2 μm filter) prior to DLS and TEM analysis.