## Abstract A series of oligomer model compounds of polyethyleneimine derivatives with pendant adenine bases were prepared by the reaction of a carboxyethyl derivative of adenine with oligomeric amines, using an activated ester method. To evaluate the intramolecular interaction between pendant aden
Functional monomers and polymers. XCVII. Synthesis of oligomer models of polyethyleneimine derivatives containing pendant thymine bases
β Scribed by Inaki, Yoshiaki ;Sakuma, Yo ;Suda, Yasuo ;Takemoto, Kiichi
- Publisher
- John Wiley and Sons
- Year
- 1982
- Weight
- 698 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0360-6376
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β¦ Synopsis
Abstract
A series of oligomer models of polyethyleneimine derivatives having pendant thymine bases were prepared by the reaction of carboxyethyl derivatives of thymine with oligomer amines using an activatedβester method. It was found that the hypochromicity values obtained from UV spectra and pKa values obtained from spectrophotometric titrations depend on the chain length of the oligomers and the thymine content of the polymers.
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## Abstract The photodimerization reaction of pendant thymine bases in thymineβcontaining polyβlysine derivatives was studied over a wide range in aqueous solution. It was found that the quantum yield of the photodimerization of pendant thymine bases is affected mainly by the conformation of the po