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Related Concept Videos

Stereoisomerism02:52

Stereoisomerism

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Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
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Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
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It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their applications. Just as our feet, which are chiral, interact uniquely with chiral objects, such as a pair of shoes, but identically with achiral socks, enantiomers of a molecule exhibit different properties only when they interact with other chiral media. An example of a significant implication from this facet is the phenomenon known as optical activity,...
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Inductive Effects on Chemical Shift: Overview01:27

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The protons in unsubstituted alkanes are strongly shielded with chemical shifts below 1.8 ppm. Methine, methylene, and methyl protons appear at approximately 1.7, 1.2 and 0.7 ppm, while the proton signal from methane appears at 0.23 ppm. An electronegative substituent, such as chlorine, withdraws the electron density from the protons, increasing their chemical shift. Progressive substitution of the hydrogens in methane by chlorine shifts the proton signals increasingly downfield, to 3.05 ppm in...
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π Electron Effects on Chemical Shift: Overview

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An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
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Intermolecular Forces and Physical Properties02:56

Intermolecular Forces and Physical Properties

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Related Experiment Video

Updated: Feb 24, 2026

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
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In-plane optical anisotropy and nonlinear optical effects in 2D InTeO3Cl.

Zemin Zheng1, Siyuan Li1, Jiuxiang Dai1

  • 1School of Chemistry and Chemical Engineering, Frontiers Science Centre for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China.

Nanoscale
|February 23, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed anisotropic two-dimensional (2D) Indium Tellurium Oxychloride (InTeO3Cl) materials. These novel 2D InTeO3Cl flakes exhibit strong in-plane optical anisotropy and nonlinear optical effects, making them promising for advanced photonic devices.

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Optoelectronics

Background:

  • Anisotropic two-dimensional (2D) materials with low structural symmetry are crucial for developing polarization-driven photonic devices.
  • In-plane optical anisotropy in 2D materials enables novel optical functionalities.

Purpose of the Study:

  • To synthesize and characterize high-quality 2D Indium Tellurium Oxychloride (InTeO3Cl) single crystals.
  • To investigate the in-plane optical anisotropy, bandgap, stability, and nonlinear optical properties of 2D InTeO3Cl.

Main Methods:

  • Chemical Vapor Transport (CVT) method for synthesizing subcentimetre-scale InTeO3Cl single crystals.
  • Exfoliation technique to obtain nanometer-thick 2D InTeO3Cl flakes.
  • Raman spectroscopy for characterizing optical anisotropy and material properties.

Main Results:

  • High-quality 2D InTeO3Cl flakes with strong in-plane optical anisotropy were successfully prepared.
  • An optical bandgap of 2.6 eV and excellent environmental and thermal stability were determined.
  • Anisotropic second-harmonic generation (SHG) response was observed, attributed to centrosymmetry breaking.

Conclusions:

  • 2D InTeO3Cl exhibits outstanding in-plane optical anisotropy and significant nonlinear optical effects.
  • The material's stability and unique optical properties make it a promising candidate for high-performance optical and photonic devices.
  • This research opens avenues for novel polarization-dependent optoelectronic applications.