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• W1970722363 endingPage "11815" @default.
• W1970722363 startingPage "11805" @default.
• W1970722363 abstract "We report DNA assisted self-assembly of polyamidoamine (PAMAM) dendrimers using all atom Molecular Dynamics (MD) simulations and present a molecular level picture of a DNA-linked PAMAM dendrimer nanocluster, which was first experimentally reported by Choi et al. (Nano Lett., 2004, 4, 391–397). We have used single stranded DNA (ssDNA) to direct the self-assembly process. To explore the effect of pH on this mechanism, we have used both the protonated (low pH) and nonprotonated (high pH) dendrimers. In all cases studied here, we observe that the DNA strand on one dendrimer unit drives self-assembly as it binds to the complementary DNA strand present on the other dendrimer unit, leading to the formation of a DNA-linked dendrimer dimeric complex. However, this binding process strongly depends on the charge of the dendrimer and length of the ssDNA. We observe that the complex with a nonprotonated dendrimer can maintain a DNA length dependent inter-dendrimer distance. In contrast, for complexes with a protonated dendrimer, the inter-dendrimer distance is independent of the DNA length. We attribute this observation to the electrostatic complexation of a negatively charged DNA strand with the positively charged protonated dendrimer." @default.
• W1970722363 created "2016-06-24" @default.
• W1970722363 creator A5011980056 @default.
• W1970722363 creator A5027898641 @default.
• W1970722363 creator A5083231687 @default.
• W1970722363 date "2014-09-26" @default.
• W1970722363 modified "2023-09-26" @default.
• W1970722363 title "DNA Assisted Self-Assembly of PAMAM Dendrimers" @default.
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• W1970722363 doi "https://doi.org/10.1021/jp504175f" @default.
• W1970722363 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25205346" @default.
• W1970722363 hasPublicationYear "2014" @default.
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