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Norbornadiene
About: Norbornadiene is a research topic. Over the lifetime, 2389 publications have been published within this topic receiving 38603 citations.
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18 Feb 1984
TL;DR: In this paper, the objective solar energy conversion material can be obtained by incorporating an organic compound capable of photo-isomerization (e.g., phenol, cresol, hydroquinone, catechol).
Abstract: PURPOSE:To obtain titled material capable of accumulating solar energy and releasing heat repeatedly over a long period, and of achieving long-term energy storage, by incorporating both photosensitizer and side-reaction inhibitor in an organic compound (or its solution) capable of photoisomerization. CONSTITUTION:The objective solar energy conversion material can be obtained by incorporating (A) an organic compound capable of photo-isomerization (e.g. norbornadiene, azobenzene, anthracene, naphthalene) or its solution, with (B) normally, <=1mol% of (i) a photosensitizer (e.g., acetophenone, benzophenone, thioxanetone, anthraquinone) plus (ii) a side-reaction inhibitor (e.g., phenol, cresol, hydroquinone, catechol). The solvent for the component (A) is, for example, an aliphatic saturated compound, halogen compound, aromatic compound, acetonitrile.
TL;DR: The quantum yields for norbornadiene to quadricyclene isomerization were measuerd in acetonitrile using several triplet sensitizers.
Abstract: The quantum yields for norbornadiene to quadricyclene isomerization were measuerd in acetonitrile using several triplet sensitizers. Among benzophenones employed as sensitizers which have nearly the same triplet excitation energies, those with electron-donating substituents exhibited higher efficiency than those with electron-accepting substituents.
01 Jan 1975
TL;DR: It has been reported that the cyclodimerization of butadiene proceeds smoothly under the influence of some nickel complexes to give 2-methylenevinylcyclopentane (I) ((a), Eq. 1) as discussed by the authors.
Abstract: It has already been reported that the cyclodimerization of butadiene proceeds smoothly under the influence of some nickel complexes to give 2-methylenevinylcyclopentane (I) ((a), Eq. 1).1 In this reaction a ligand-containing nickel(0) complex, combined with protic acid, has been proved to be an active species.2 Not only the cyclodimerization but also following reactions of diolefins occur in the presence of the catalysts; (b) trans-l,14-polymerization,3 (c) amination of 1,3-diolefin and norbornadiene,4 (d) ally1 transfer,5 (e) a novel dimerization of norbornadiene (Eq.2),6 and (f) cycloaddition of butadiene to strained ring olefins to form an exomethylene- and methyl-substituted four-membered cyclic compound (Eq. 3).7