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dc.contributor.authorDe Sousa, Frederico B.
dc.contributor.authorLima, Ana C.
dc.contributor.authorDenadai, Angelo M. L.
dc.contributor.authorAnconi, Cleber P. A.
dc.contributor.authorDe Almeida, Wagner B.
dc.contributor.authorNovato, Willian T. G.
dc.contributor.authorDos Santos, Helio F.
dc.contributor.authorDrum, Chester L.
dc.contributor.authorLanger, Robert
dc.contributor.authorSinisterra, Ruben D.
dc.date.accessioned2014-11-17T18:46:11Z
dc.date.available2014-11-17T18:46:11Z
dc.date.issued2012-01
dc.date.submitted2011-08
dc.identifier.issn1463-9076
dc.identifier.issn1463-9084
dc.identifier.urihttp://hdl.handle.net/1721.1/91598
dc.description.abstractThe size, shape and surface chemistry of nanoparticles play an important role in cellular interaction. Thus, the main objective of the present study was the determination of the β-cyclodextrin (β-CD) self-assembly thermodynamic parameters and its structure, aiming to use these assemblies as a possible controlled drug release system. Light scattering measurements led us to obtain the β-CD's critical aggregation concentration (cac) values, and consequently the thermodynamic parameters of the β-CD spontaneous self-assembly in aqueous solution: Δ[subscript agg]G[superscript o] = −16.31 kJ mol[superscript −1], Δ[subscript agg]H[superscript o] = −26.48 kJ mol[superscript −1] and TΔ[subscript agg]S[superscript o] = −10.53 kJ mol[superscript −1] at 298.15 K. Size distribution of the self-assembled nanoparticles below and above cac was 1.5 nm and 60–120 nm, respectively. The number of β-CD molecules per cluster and the second virial coefficient were identified through Debye's plot and molecular dynamic simulations proposed the three-fold assembly for this system below cac. Ampicillin (AMP) was used as a drug model in order to investigate the key role of the guest molecule in the self-assembly process and the β-CD:AMP supramolecular system was studied in solution, aiming to determine the structure of the supramolecular aggregate. Results obtained in solution indicated that the β-CD's cac was not affected by adding AMP. Moreover, different complex stoichiometries were identified by nuclear magnetic resonance and isothermal titration calorimetry experiments.en_US
dc.description.sponsorshipBrazil. National Institute in Science and Technology in Nanobiopharmaceutics (NanoBiofar) (CNPq/MCT/FAPEMIG)en_US
dc.description.sponsorshipConselho Nacional de Pesquisas (Brazil)en_US
dc.description.sponsorshipNational Institutes of Health (U.S.) (Grant 1-R01-DE016516-03)en_US
dc.description.sponsorshipCoordenacao de Aperfeicoamento de Pessoal de Nivel Superior (Process 4597-08-7)en_US
dc.description.sponsorshipFundacao de Amparo a Pesquisa do Estado de Minas Gerais (CEX APQ-00498/08)en_US
dc.language.isoen_US
dc.publisherRoyal Society of Chemistryen_US
dc.relation.isversionofhttp://dx.doi.org/10.1039/c2cp22768aen_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alikeen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/en_US
dc.sourcePMCen_US
dc.titleSuperstructure based on β-CD self-assembly induced by a small guest moleculeen_US
dc.typeArticleen_US
dc.identifier.citationDe Sousa, Frederico B., Ana C. Lima, Angelo M. L. Denadai, Cleber P. A. Anconi, Wagner B. De Almeida, Willian T. G. Novato, Helio F. Dos Santos, Chester L. Drum, Robert Langer, and Ruben D. Sinisterra. “Superstructure Based on β-CD Self-Assembly Induced by a Small Guest Molecule.” Physical Chemistry Chemical Physics 14, no. 6 (2012): 1934.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Chemical Engineeringen_US
dc.contributor.mitauthorDe Sousa, Frederico B.en_US
dc.contributor.mitauthorDrum, Chester L.en_US
dc.contributor.mitauthorLanger, Roberten_US
dc.relation.journalPhysical Chemistry Chemical Physicsen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsDe Sousa, Frederico B.; Lima, Ana C.; Denadai, Angelo M. L.; Anconi, Cleber P. A.; De Almeida, Wagner B.; Novato, Willian T. G.; Dos Santos, Helio F.; Drum, Chester L.; Langer, Robert; Sinisterra, Ruben D.en_US
dc.identifier.orcidhttps://orcid.org/0000-0003-4255-0492
mit.licenseOPEN_ACCESS_POLICYen_US


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