Design Principles of Colloidal Nanorod Heterostructures

Drake, Gryphon; Keating, Logan P.; Shim, Moonsub

doi:10.1021/acs.chemrev.2c00410

Cited by 24 publications

(26 citation statements)

References 157 publications

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“…Future research should likely aim to engineer the bandgap, band offsets, and size of semiconductor nanoparticle heterostructures to improve upconversion efficiency through better control of carrier transfer and loss. However, careful, systematic, and time-consuming studies are often needed to determine appropriate synthesis conditions for particles with increasingly complex structures and compositions, and such work is a prerequisite for the analysis of the relationship between particle structure and upconversion efficiency. − …”

Section: Discussionmentioning

confidence: 99%

Role of Semiconductor Nanostructures in Photon Upconversion Applications

Cleveland

Welsch

Chase

et al. 2023

ACS Appl. Opt. Mater.

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Photon upconversion, a process in which multiple low-energy photons are absorbed and re-emitted as higher-energy photons, has recently received a significant amount of attention due to its potential utility across a wide range of optical applications. Traditionally, two types of materials have been used for photon upconversion applications: lanthanide-doped nanocrystals and triplet–triplet annihilation molecules. While these systems have demonstrated good upconversion efficiencies, they both suffer from some limitations, particularly in spectral utilization. In this review, we will highlight the ways semiconductor nanocrystals have been integrated into existing upconverison platforms to address their limitations and improve their usability for some specific upconversion applications. Additionally, we will discuss the recent development of upconversion platforms based entirely on semiconductor nanostructures. These systems rely on the size-, shape-, and composition-dependent optical properties of semiconductors to design upconverting materials with the necessary electronic structure for a specific application. We discuss the current status of these hybrid and pure semiconductor-based upconverters and suggest future directions for further improving their upconversion performance.

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Section: Discussionmentioning

confidence: 99%

Role of Semiconductor Nanostructures in Photon Upconversion Applications

Cleveland

Welsch

Chase

et al. 2023

ACS Appl. Opt. Mater.

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“…Adding the studies of rod thickness, surface roughness, and rod flexibility will broaden the fundamental understanding of nanorod-polymer coupling. For future experiments, recent advances in the design principles of colloidal nanorod heterostructures may be utilized for the precise control of nanorod geometry as well as the tracking of nanorods based on the optical properties of semiconductor nanocyrstals.…”

Section: Recent Work On Nanoparticle–polymer Coupling In Various Scen...mentioning

confidence: 99%

Scaling Perspective on Dynamics of Nanoparticles in Polymers: Length- and Time-Scale Dependent Nanoparticle–Polymer Coupling

2023

Macromolecules

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The motion of nanoparticles in a polymer matrix is dictated by the intricate coupling of the nanoparticles and surrounding polymers. Various length- and time-scale dependent features of nanoparticle–polymer coupling in a polymer matrix have been delineated in the past decade by combining scaling theory and molecular simulations. Representative scenarios of nanoparticle dynamics in polymers, which embody the roles of polymer matrix topology, the polymers grafted to nanoparticle surface, the anisotropic shape of nanoparticles, and an external driving force, are reviewed. The systems examined demonstrate both the richness of the physics in the nanoparticle–polymer coupling and the capability of the scaling-level description in providing unique insights into the size- and time-dependence of nanoparticle mobility. Following a review of recent work, more scenarios of nanoparticles in polymer matrices, which reflect new pieces of physics in the nanoparticle–polymer coupling, are discussed. Together with the advances in the chemical synthesis of nanoparticles and polymers as well as in the techniques of tracking nanoparticle motion and measuring nanoparticle diffusivity, the microscopic picture of nanoparticle–polymer coupling revealed theoretically and computationally is anticipated to aid in the manipulation of nanoparticles in complex polymeric environments and thus benefit many technological applications.

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“…58,173 Depending on the interfacial energy, lattice matching, and the reaction conditions, HNCs can range from uniformly covered core-shells to dumbbells and even highly anisotropic structures such as tetrapods. 59,63,106,174,175 HNCs can generate synergistically enhanced chemical and physical properties for unusual phenomena, which are otherwise not achievable by monocomponent NCs. 23,58,106,176 For HNCs, uncharacteristic optical behavior results from altered quantum confinement, modified charge carrier recombination, or separation dynamics.…”

Section: Perovskite Ncsmentioning

confidence: 99%