Self-assembly of nanocrystals into strongly electronically coupled all-inorganic supercrystals

Igor Coropceanu, Eric M. Janke, Joshua Portner, Danny Haubold, Trung Dac Nguyen, Avishek Das, Christian P.N. Tanner, James K. Utterback, Samuel W. Teitelbaum, Margaret H. Hudson, Nivedina A. Sarma, Alex M. Hinkle, Christopher J. Tassone, Alexander Eychmüller, David T. Limmer, Monica Olvera de la Cruz, Naomi S. Ginsberg, Dmitri V. Talapin

Research output: Contribution to journalArticlepeer-review

Abstract

Colloidal nanocrystals of metals, semiconductors, and other functional materials can self-assemble into long-range ordered crystalline and quasicrystalline phases, but insulating organic surface ligands prevent the development of collective electronic states in ordered nanocrystal assemblies. We reversibly self-assembled colloidal nanocrystals of gold, platinum, nickel, lead sulfide, and lead selenide with conductive inorganic ligands into supercrystals exhibiting optical and electronic properties consistent with strong electronic coupling between the constituent nanocrystals. The phase behavior of charge-stabilized nanocrystals can be rationalized and navigated with phase diagrams computed for particles interacting through short-range attractive potentials. By finely tuning interparticle interactions, the assembly was directed either through one-step nucleation or nonclassical two-step nucleation pathways. In the latter case, the nucleation was preceded by the formation of two metastable colloidal fluids.

Original languageEnglish (US)
Pages (from-to)1422-1426
Number of pages5
JournalScience
Volume375
Issue number6587
DOIs
StatePublished - Mar 25 2022

ASJC Scopus subject areas

  • General

Fingerprint

Dive into the research topics of 'Self-assembly of nanocrystals into strongly electronically coupled all-inorganic supercrystals'. Together they form a unique fingerprint.

Cite this