関連する実験動画
Updated: Feb 11, 2026

10:16
Electroactive Polymer Nanoparticles Exhibiting Photothermal Properties
Published on: January 8, 2016
14.3K
1次元コバルト-シチジン一リン酸配位高分子、効率的な紫外第二高調波発生を示す
Mubashar Ilyas1, Lin Xiong2, Li Zhang2
1Key Laboratory of Clusters Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China.
Chemistry (Weinheim an der Bergstrasse, Germany)
|February 10, 2026
まとめ
研究者らは、紫外非線形光学(NLO)用途向けの新しいコバルトベースの配位錯体を開発しました。この材料は強力な第二高調波発生(SHG)応答を示し、NLO技術に有望です。
科学分野:
- 材料科学
- 無機化学
- 結晶学
背景:
- 高度な光学アプリケーションには、新しい紫外線(UV)非線形光学(NLO)材料の開発が不可欠です。
- 配位錯体は、NLO材料設計のための調整可能な特性を提供します。
研究 の 目的:
- UV NLO用途向けの新しいコバルトベースの水素結合配位錯体を合成および特性評価すること。
- 合成された錯体のNLO挙動を支配する構造-特性相関を調査すること。
主な方法:
- コバルトベースの配位錯体の合成のための緩徐蒸発法。
- 結晶構造と非中心対称(NCS)空間群を決定するためのX線結晶構造解析。
- NLO応答を定量化するための第二高調波発生(SHG)測定。
- UV透過性を評価するための光学バンドギャップ決定。
主要な成果:
- 新規コバルト(II)配位錯体[complex (1)]を合成し、NCS空間群P2₁で結晶化しました。
- [Complex (1)]は、KDPの約7.4倍の強力な第二高調波発生(SHG)応答を示します。
- この材料は3.41 eVの光学バンドギャップを持ち、良好なUV透過性を示します。
- 堅牢な水素結合相互作用と歪んだ分極可能なCo(II)配位構造が、SHG活性の向上に寄与しています。
結論:
- [Complex (1)]として表される合成されたコバルトベースのフレームワークは、UV NLO用途の有望な候補です。
- この研究は、優れた光学特性を持つ極性金属有機系を設計する上で、水素結合と配位構造制御の効果を強調しています。
関連する概念動画
Coordination Number and Geometry
19.1K
For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
19.1K
Coordination Compounds and Nomenclature
26.9K
In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
26.9K
Polymers
41.1K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
41.1K
Harmonic Mean
3.8K
The arithmetic mean is usually skewed towards the larger values in the data set. Therefore, to avoid this inherent bias towards smaller values, the harmonic mean is used.
Take the example of the speed of a car, which is the measure of the rate of distance traveled. If the vehicle traverses the same distance back-and-forth, its average speed equals the total distance traveled divided by the total time taken. However, if the car moves with varying speeds, then the arithmetic mean is more skewed...
Take the example of the speed of a car, which is the measure of the rate of distance traveled. If the vehicle traverses the same distance back-and-forth, its average speed equals the total distance traveled divided by the total time taken. However, if the car moves with varying speeds, then the arithmetic mean is more skewed...
3.8K
Lattice Centering and Coordination Number
12.0K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
Types of Unit Cells
Imagine taking a large number of identical...
12.0K
Simple Harmonic Motion
15.4K
Simple harmonic motion is the name given to oscillatory motion for a system where the net force can be described by Hooke's law. If the net force can be described by Hooke's law and there is no damping (by friction or other non-conservative forces), then a simple harmonic oscillator will oscillate with equal displacement on either side of the equilibrium position. To derive an equation for period and frequency, the equation of motion is used. The period of a simple harmonic oscillator is given...
15.4K

