Molecular Chemistry to the Fore: New Insights into the Fascinating World of Photoactive Colloidal Semiconductor Nanocrystals

TitleMolecular Chemistry to the Fore: New Insights into the Fascinating World of Photoactive Colloidal Semiconductor Nanocrystals
Publication TypeJournal Article
Year of Publication2013
AuthorsVela J
Journal TitleJournal of Physical Chemistry Letters
Volume4
Pages653-668
Date Published02
Type of ArticleArticle
ISBN Number1948-7185
Accession NumberWOS:000315432000018
Keywords3d atom-probe, chalcogenide surface ligands, ENHANCED RAMAN-SCATTERING, fluorescent biological labels, luminescent, magnetic-resonance-spectroscopy, quantum dots, ring-closing metathesis, shape-controlled synthesis, solar-cells, solution-phase synthesis
Abstract

Colloidal semiconductor nanocrystals possess unique properties that are unmatched by other chromophores such as organic dyes or transition-metal complexes. These versatile building blocks have generated much scientific interest and found applications in bioimaging, tracking lighting, lasing, photovoltaics, photocatalysis, thermoelectrics, and spintronics. Despite these advances, important challenges remain, notably how to produce semiconductor nanostructures with predetermined architecture, how to produce metastable semiconductor nanostructures that are hard to isolate by conventional syntheses, and how to control the degree of surface loading or valence per nanocrystal. Molecular chemists are very familiar with these issues and can use their expertise to help solve these challenges. In this Perspective, we present our group's recent work on bottom-up molecular control of nanoscale composition and morphology, low-temperature photochemical routes to semiconductor heterostructures and metastable phases, solar-to-chemical energy conversion with semiconductor-based photocatalysts, and controlled surface modification of colloidal semiconductors that bypasses ligand exchange.

URL<Go to ISI>://WOS:000315432000018
DOI10.1021/jz302100r