We report stimuli-responsive core-satellite assemblies of binary gold nanoparticles, linked by i-motif DNA, for live cell plasmonic imaging of pH changes in the endocytic pathway.

Engineering, American Chemical Society (ACS). It incorporates referee's comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document.

A new G-quadruplex (GQ) stabilizer, [Pt(Dip)2](PF6)2 (Dip: 4,7-diphenyl-1,10-phenanthroline), is prepared by the microwave irradiation method. The complex can highly stabilize G-quadruplex, but has negligible interactions with duplex DNA. Aromatic anchors on the polypyridyl ligands bestow the stabilizer with a high binding preference towards parallel GQ.

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Their professional technique supports have helped me solve numerous problems which I could not get over on my own. I would like to thank the summer research students, Low Yin Sing and Teng Zhi Rong Andrew, for their diligent work in the project of synthesis of DNA with hmC and fC modification as well as effects of epigenetic on charge transport. The financial support to my PhD study by Nanyang Technological University Research Scholarship is gratefully acknowledged. Sincere thanks to Thittaya Kunthic for bringing joy and happiness to my life. You've changed everything. Lastly, I would like to thank my family for the unconditional love and support all the time. Thank you for having faith in me and respecting my choices. I wish I did not let you down. I will not let you down.