DNA Directed Self‐Assembly of Fluorescent Colloidal Semiconductor Quantum Dots and Plasmonic Metal Nanoparticles Heterogeneous Nanomaterials

Abstract

The exciton-plasmon interaction between fluorescent colloidal semiconductor quantum dots and plasmonic metal nanoparticles may lead to emission quenching or enhancement of quantum dots, which have potential applications in renewable energy, nanophotonics, and biosensing. Semiconductor quantum dots and metal nanoparticles hybrids with controlled geometry, distance, and stoichiometry are crucial for the potential applications. While DNA nanotechnology, based on Watson-Crick base-pairing interactions between two single-stranded DNAs, has provided unique opportunities to generate fully programmable, functional metal nanoparticles and semiconductor quantum dots hybrid nanomaterials, and offers precisely control over the spacing, orientation, and chirality of the components. This review provides the highlights of the recent progresses in DNA directed self-assembly of colloidal semiconductor quantum dots and metallic nanoparticles heterogeneous nanomaterials. We also discuss the challenges and the trends in DNA directed self-assembly of semiconductor quantum dots and metallic nanoparticles hybrid nanomaterials.

Recent Advances in the DNA-Mediated Multi-Mode Analytical Methods for Biological Samples

“…Nowadays, DNA is regarded as a masterpiece in the field of nanotechnology for the multifarious and programmable structures at the nanoscale [1]. Except for the basic biological carrying functions, DNA plays the prominent role as a functional chemical molecule in the synthesis, modification and assembly of nanomaterials due to the unique properties of diverse structures, easy labeling, nanoscale rigidity, specific molecule binding and metal-ion response [2][3][4]. Thus, DNA-mediated technology driven by DNA with a specific sequence or structure can be applied in different sensing analyses to achieve selective response to the targets via various nucleic acid chain reactions [5][6][7][8] due to its distinctive properties of precise programmability, easy synthesis and high stability.…”

Assembly of CdTe Quantum Dots and Photosystem II Multilayer Films with Enhanced Photocurrent

“…Owing to their remark-able features such as broad excitation range, narrow and symmetric emission, high photostability and high quantum yield, QDs have been applied in many fields from optoelectronics to biomedicine. [17][18][19][20][21][22] Most importantly, fluorescent QDs possess size-tunable emission covering the UV-blue to near infrared, which has overlap with the "red" light that can be efficiently captured by PSII. For example, both CdTe and CdSe QDs have been used in the investigation of energy transfer in the photosynthetic protein/semiconductor hybrid systems.…”