期刊
TETRAHEDRON LETTERS
卷 41, 期 7, 页码 1055-1058出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(99)02233-9
关键词
azo; azo compounds; isomerization; phosphoramidites; photochemistry
meta-Aminoazobenzene has been introduced in the side chain of oligonucleotides as a photo-responsive molecule. Compared with the para-aminoazobenzene which was previously used, the thermal cis-->trans isomerization was much slower: the half-lives of the cis-isomers of m- and p-aminoazobenzene were 13.2 h and 20 min at 50 degrees C, respectively. By using the present oligonucleotides, duplex formation and dissociation was efficiently regulated on photo-irradiation without being disturbed by the thermal isomerization. (C) 2000 Elsevier Science Ltd. All rights reserved.
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