Preparation and Photo-thermal Isomerization of Azo [2.2.1]-and Azo[2.2.3]metacyclophane Tweezers
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- Sawada Tsuyoshi
- Institute of Advanced Material Study Kyushu University
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- Thiemann Thies
- Institute of Advanced Material Study Kyushu University
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- Mataka Shuntaro
- Institute of Advanced Material Study Kyushu University
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Abstract
Azo[2.2.1]metacyclophane (MCP) tweezer 11 and azo[2.2.3]MCP tweezer 12 were prepared from [2.2.1]MCP 1a and [2.2.3]MCP 8, respectively, by ipso-nitration followed by reductive coupling using LiAlH_4. The photochemical and thermal isomerization of azo[2.2.n]MCP tweezers were studied by UV spectroscopy. The activation parameter (E_a) of the thermal cis-trans isomerization of 11 and 12 was determined as 81.7 kJmol^<-1> and 90.9 kJmol^<-1>, respectively.
Journal
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- 九州大学機能物質科学研究所報告
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九州大学機能物質科学研究所報告 13 (1), 25-30, 1999-07-08
Institute of Advanced Material Study Kyushu University
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Details 詳細情報について
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- CRID
- 1390572174788962688
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- NII Article ID
- 110006177557
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- NII Book ID
- AN10060378
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- ISSN
- 09143793
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- DOI
- 10.15017/7907
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- HANDLE
- 2324/7907
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- NDL BIB ID
- 4785916
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- Abstract License Flag
- Allowed