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Probing DNA-AuNP Interactions with Oligo-Texaphyrin Bridges

Investigate the aggregation behavior of DNA-AuNP complexes using circularized and linearized texaphyrin bridges of varying lengths. The study demonstrates fluorescence changes indicating bridge-induced interactions.

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Probing DNA-AuNP Interactions with Oligo-Texaphyrin Bridges

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  1. hv @ 732nm Oligo-texaphyrin (15nt) Circularized bridge (45nt) Linearized bridge (30nt unpaired) Linearized bridge induced aggregation (blue)

  2. C1 C1 L1 induced aggregation (blue) L1 L1 DNA-AuNP (red) L1 L1 L1 C1 induces no aggregation (red)

  3. c C T A G C A A L1 T A C C G G G A A G G G G rA C G U C C C C A A T T T C T A G C GrA G C C2 T A A G G C A C U A G A G C C A T A T C G C T A G C A A T A L2 C C G G G A A C G G T rA G T U C C A A G C G C A C G T CrA A G C1 G C A G G C A C U A G A G C C A T A T C G Fluorescence active Fluorescence quenched

  4. c C T A G C A A L1 T A C C G G G A A G G G G rA C G U C C C C A A T T T C T A G C GrA G C C2 T A A G G C A C U A G A G C C A T A T C G C T A G C A A T A L2 C C G G G A A C G G T rA G T U C C A A G C G C A C G T CrA A G C1 G C A G G C A C U A G A G C C A T A T C G Fluorescence active Fluorescence quenched

  5. C T A G C A A L1 T A C C G G G A T A A G G G G G rA rA G C G U U T C C C C A C A C A G A G T C T A T C G T A G T C GrA A G G C C1 C2 C G T A A A G G G G C C A A C C T U A A G G A A G G C C C C A A T T A T A T C G C G Fluorescence active Fluorescence quenched

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