相关实验视频

Updated: Jul 9, 2026

Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites
12:21

Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites

Published on: February 6, 2016

(RbxK1-x) 3C60 超导体:形成一个连续系列的固体溶液

C C Chen, S P Kelty, C M Lieber

    Science (New York, N.Y.)
    |August 23, 1991
    PubMed
    概括

    研究人员创造了新的鲁比和辅助的烯超导体, (Rb_xK_{1-x})_3C_{60}. 过渡温度 (T_c) 与含量线性增加,这表明这些固体溶液中的化学压力效应.

    更多相关视频

    From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding06:44

    From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

    Published on: March 24, 2018

    Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene08:44

    Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

    Published on: August 22, 2017

    相关概念视频

    Structures of Solids02:22

    Structures of Solids

    Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
    Metallic Solids02:37

    Metallic Solids

    Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
    All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
    Benzene to 1,4-Cyclohexadiene: Birch Reduction Mechanism01:18

    Benzene to 1,4-Cyclohexadiene: Birch Reduction Mechanism

    Birch reduction uses solvated electrons as reducing agents. The reaction converts benzene to 1,4-cyclohexadiene. The reaction proceeds by the transfer of a single electron to the ring to form a benzene radical anion. This anion is highly basic—it abstracts a proton from the alcohol to form a cyclohexadienyl radical. Another single electron transfer gives the cyclohexadienyl anion. A proton transfer from the alcohol forms 1,4-cyclohexadiene. Since this reduction occurs via radical anion...
    Radical Formation: Overview01:03

    Radical Formation: Overview

    A bond can be broken either by heterolytic bond cleavage to form ions or homolytic bond cleavage to yield radicals. A fishhook arrow is used to represent the motion of a single electron in homolytic bond cleavage. There are two main sources from which radicals can be formed:
    Radicals from spin-paired molecules:
    Radicals can be obtained from spin-paired molecules either by homolysis or electron transfer. While two radicals are formed in the former, an electron is added in the latter, also known...
    Radical Substitution: Allylic Bromination01:27

    Radical Substitution: Allylic Bromination

    In organic synthesis, the formation of products can be altered by changing the reaction conditions. For example, a dibromo addition product is formed when propene is treated with bromine at room temperature. In contrast, propene undergoes allylic substitution in non-polar solvents at high temperatures to give 3-bromopropene. In order to avoid the addition reaction, the bromine concentration must be kept as low as possible throughout the reaction. This can be achieved using N-bromosuccinimide...
    Solid–Solid Solutions01:24

    Solid–Solid Solutions

    The temperature-composition phase diagram of two solids, A and B, which are immiscible in the solid phase but form miscible liquids, shows that when the temperature is low, these two exist as separate, pure solids (A and B). As the temperature increases, they transition into a single-phase liquid solution where A and B coexist. Moving from point a1 to a2 in the phase diagram, the composition changes such that solid B begins to separate from the solution, enriching the remaining liquid with A.