Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

IR and UV–Vis Spectroscopy of Carboxylic Acids01:28

IR and UV–Vis Spectroscopy of Carboxylic Acids

In IR spectroscopy of carboxylic acids, the C=O bond shows a characteristic band between 1710 and 1760 cm⁻¹, and the O–H bond exhibits a broad band between 2500 and 3300 cm⁻¹.
However, the stretching absorptions for the C=O bond vary depending on the structure of carboxylic acids. The C=O bond of the free carboxylic acids shows a higher stretching frequency, 1760 cm−1, while H-bonded carboxylic acids (dimers) exhibit stretching absorptions at a lower frequency, 1710 cm−1. The C=O bond of the...
Spectroscopy of Carboxylic Acid Derivatives01:26

Spectroscopy of Carboxylic Acid Derivatives

Infrared spectroscopy is primarily used to determine the types of bonds and functional groups. In carboxylic acid derivatives, a typical carbonyl bond absorption is observed around 1650–1850 cm−1. For esters, the absorption is recorded at around 1740 cm−1, while acid halides show the absorption at about 1800 cm−1. Another acid derivative, the acid anhydrides, exhibit two carbonyl absorption around 1760 cm−1 and 1820 cm−1, arising from the symmetrical and unsymmetrical carbonyl vibration.
In the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Morphological and chemical changes in Cd-free colloidal QD-LEDs during operation.

Science advances·2026
Same author

Automated synthesis of InSb quantum dots with improved batch-to-batch reproducibility via kinetically matched co-reduction.

Nature communications·2026
Same author

Reconstruction-hybridization of molecular and metallic interfaces for efficient oxygen evolution.

Chemical science·2026
Same author

Multisite Passivation and Surface Reconstruction of Perovskite for All-Air-Fabricated Perovskite Solar Cells.

Nano letters·2026
Same author

Lattice-Matched 2D Template Enables Efficient Cesium Tin Halide Perovskite Solar Cells.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Electrochemical Modulation of Precatalysts Tailors the Cu Coordination Environment to Shift CO<sub>2</sub>RR Products from C<sub>1</sub> to C<sub>2</sub>.

ACS nano·2026

Related Experiment Video

Updated: May 16, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

Short-Chain Acids Sustain InAs Colloidal Quantum Dot Growth during Synthesis, Extending Spectral Response into the

Hyeong Woo Ban1, Xubiao Li1, Stefan Zeiske1

  • 1Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States.

Journal of the American Chemical Society
|May 14, 2026
PubMed
Summary
This summary is machine-generated.

Short-chain carboxylic acids (SCCAs) overcome the size limitations in colloidal quantum dot (CQD) synthesis. These ligands enhance monomer transfer, enabling continuous growth for advanced infrared photodetector applications.

More Related Videos

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing
08:12

Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing

Published on: March 13, 2013

Related Experiment Videos

Last Updated: May 16, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing
08:12

Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing

Published on: March 13, 2013

Area of Science:

  • Materials Science
  • Nanotechnology
  • Quantum Dot Synthesis

Background:

  • III-V colloidal quantum dots (CQDs) are crucial for optoelectronic devices, but their synthesis faces a size limitation around 5-8 nm.
  • Existing nanocluster-seeded syntheses struggle to surpass this 'size wall', hindering applications requiring larger CQDs.

Purpose of the Study:

  • To identify kinetic constraints in CQD growth beyond the typical size limit.
  • To develop a method for continuous growth of CQDs past the empirical size wall.
  • To enable the synthesis of larger CQDs for deep short-wave infrared (SWIR) applications.

Main Methods:

  • Investigated monomer release and transfer kinetics during CQD growth.
  • Utilized short-chain carboxylic acids (SCCAs) as transient ligands.
  • Employed nuclear magnetic resonance (NMR) spectroscopy (1H, 2H, 13C-labeled, DOSY) and X-ray photoelectron spectroscopy (XPS).
  • Analyzed InAs CQDs using indium K-edge XANES/EXAFS.

Main Results:

  • Identified monomer transfer from nanoclusters as a key kinetic bottleneck.
  • Demonstrated that SCCAs (particularly acetic acid) enhance nanocluster lability and monomer transfer.
  • Achieved continuous CQD growth beyond the 5-8 nm size wall.
  • Synthesized InAs CQDs with excitonic features extending to 1800 nm.
  • Fabricated photodetectors with a 1520 nm exciton, extending photodetection into the deep SWIR spectrum.

Conclusions:

  • SCCAs act as transient ligands, facilitating continuous growth of CQDs past the size wall.
  • This method allows for the controlled synthesis of larger CQDs for advanced SWIR optoelectronic devices.
  • The developed technique overcomes a critical limitation in colloidal quantum dot synthesis.