Related Experiment Video
Updated: Feb 1, 2026

08:39
Liquid-cell Transmission Electron Microscopy for Tracking Self-assembly of Nanoparticles
Published on: October 16, 2017
13.2K
Publisher Correction: Regioselective surface encoding of nanoparticles for programmable self-assembly
Gang Chen1,2, Kyle J Gibson1, Di Liu1
1Department of Chemistry, The University of Chicago, Chicago, IL, USA.
Nature Materials
|December 14, 2018
Summary
A correction has been made to a figure in the article. The diblock copolymer structure in Fig. 2a was updated to show a double bond instead of a single bond between carbon and oxygen atoms.
Area of Science:
- Polymer Chemistry
- Materials Science
Background:
- Diblock copolymers are crucial in various applications.
- Accurate structural representation is vital for understanding material properties.
Purpose of the Study:
- To correct a structural error in Fig. 2a.
- To ensure the accurate depiction of a diblock copolymer.
Main Methods:
- Review of published article figures.
- Correction of chemical structure representation.
Main Results:
- Identified an error in the original Fig. 2a.
- Corrected the carbon-oxygen bond from single to double.
Conclusions:
- The corrected figure accurately represents the diblock copolymer.
- Ensured scientific accuracy in published research.
More Related Videos
Related Concept Videos
Regioselectivity of Electrophilic Additions-Peroxide Effect
10.6K
In the presence of organic peroxides, the addition of hydrogen bromide to an alkene yields the isomer that is not predicted by Markovnikov’s rule. For example, the addition of hydrogen bromide to 2-methylpropene in the presence of peroxides gives 1-bromo-2-methylpropane. This addition reaction proceeds via a free radical mechanism, which reverses the regioselectivity. The free radical reaction mechanism involves three stages: initiation, propagation, and termination.
10.6K
Distance Corrections
290
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
290
Encoding
846
Information enters the brain through encoding, which is the input of information into the memory system. Once sensory information is received from the environment, the brain labels or codes it. The information is then organized with similar information and connected to existing concepts. Encoding occurs through automatic processing and effortful processing.
Automatic processing involves the encoding of details like time, space, frequency, and the meaning of words, usually done without conscious...
Automatic processing involves the encoding of details like time, space, frequency, and the meaning of words, usually done without conscious...
846
Power Factor Correction
538
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
538
Regioselectivity and Stereochemistry of Hydroboration
9.5K
A significant aspect of hydroboration–oxidation is the regio- and stereochemical outcome of the reaction.
Hydroboration proceeds in a concerted fashion with the attack of borane on the π bond, giving a cyclic four-centered transition state. The –BH2 group is bonded to the less substituted carbon and –H to the more substituted carbon. The concerted nature requires the simultaneous addition of –H and –BH2 across the same face of the alkene giving syn stereochemistry.
Hydroboration proceeds in a concerted fashion with the attack of borane on the π bond, giving a cyclic four-centered transition state. The –BH2 group is bonded to the less substituted carbon and –H to the more substituted carbon. The concerted nature requires the simultaneous addition of –H and –BH2 across the same face of the alkene giving syn stereochemistry.
9.5K
Regioselective Formation of Enolates
3.5K
As depicted in the figure below, the unsymmetrical ketones can form two possible enolates: less substituted or more substituted enolates. Usually, the thermodynamic enolates are formed from the more substituted α-carbon atom, while the kinetic enolates are formed faster by deprotonation from the less substituted position. The thermodynamic enolates have lower energy, so they are more stable. But the energy required to form kinetic enolates is less.
3.5K

