Stable and Size Tunable CsPbBr3 Nanocrystals Synthesized with Oleylphosphonic Acid.

Nano Letters
Baowei ZhangLiberato Manna

Abstract

We employed oleylphosphonic acid (OLPA) for the synthesis of CsPbBr3 nanocrystals (NCs). Compared to phosphonic acids with linear alkyl chains, OLPA features a higher solubility in apolar solvents, allowing us to work at lower synthesis temperatures (100 °C), which in turn offer a good control over the NCs size. This can be reduced down to 5.0 nm, giving access to the strong quantum confinement regime. OLPA-based NCs form stable colloidal solutions at very low concentrations (∼1 nM), even when exposed to air. Such stability stems from the high solubility of OLPA in apolar solvents, which enables these molecules to reversibly bind/unbind to/from the NCs, preventing the NCs aggregation/precipitation. Small NCs feature efficient, blue-shifted emission and an ultraslow emission kinetics at cryogenic temperature, in striking difference to the fast decay of larger particles, suggesting that size-related exciton structure and/or trapping-detrapping dynamics determine the thermal equilibrium between coexisting radiative processes.

References

Aug 30, 2008·Journal of the American Chemical Society·Jonathan S OwenA Paul Alivisatos
Dec 30, 2015·Journal of the American Chemical Society·Ju Young WooSohee Jeong
Sep 25, 2017·The Journal of Physical Chemistry Letters·Vikash Kumar RaviAngshuman Nag
Jan 13, 2018·Nature·Michael A BeckerAlexander L Efros
Feb 21, 2018·Nature Materials·Quinten A AkkermanLiberato Manna
Aug 29, 2018·Nature·Qiushui ChenXiaogang Liu
Dec 21, 2018·Nanoscale·Roberto GrisorioGian Paolo Suranna
Jul 8, 2020·Nature Nanotechnology·Yitong DongEdward H Sargent

❮ Previous
Next ❯

Citations

Jan 8, 2021·Accounts of Chemical Research·Stefano TosoLiberato Manna
Feb 4, 2021·The Journal of Physical Chemistry Letters·Arnab MandalSayan Bhattacharyya
Jun 18, 2021·ACS Nano·Amrita DeyLakshminarayana Polavarapu
Sep 2, 2021·Journal of the American Chemical Society·Suman BeraNarayan Pradhan
Sep 23, 2021·The Journal of Physical Chemistry Letters·Sanford Ruhman
Nov 24, 2021·ACS Applied Materials & Interfaces·Jesna K GeorgeR Geetha Balakrishna

❮ Previous
Next ❯

Methods Mentioned

BETA
NMR

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.