Showing papers by "Yoshiaki Inaki published in 1991"
TL;DR: In this article, a photoreversible recording system with a long alkyl chain was proposed, which is based on the photo-reactivity of thymine base in film state and in polymer matrix.
Abstract: Thymine base with long alkyl chain shows wonderful reactivity and perfect reversibility on photoreversible dimerize, splitting reaction by irradiating UV light at 280nm and 240nm. There are three points for this photoreversible recording system. 1). It causes upon the high photo-reactivity of thymine base in film state and in polymer matrix. 2). With long alkyl chain supply suitable ordered thymine bases in film and matrix. 3). Polymer matrix increases the stability of the reactant from outside influences to be in use as a recording materials.
14 citations
7 citations
01 Jan 1991
TL;DR: Water soluble nucleic acid analogs were prepared and found to form complementary polymer complexes with each other and with polynucleotides by specific base-base interaction in aqueous solution.
Abstract: Water soluble nucleic acid analogs were prepared by grafting uracil, thymine, 5-fluorouracil, hypoxanthine, cytosine, and adenine derivatives containing a hydroxy group onto linear poly (ethyleneimine). These polymers contained about 90 unit% of the nucleic acid bases, and were easily soluble in water at neutral pH resign. The analogs were found to form complementary polymer complexes with each other and with polynucleotides. The interaction study was made on these polymers, and with polynucleotides; poly (uridylic acid) poly (U), poly (adenylic acid) poly (A), poly (inosinic acid) poly (I) and poly (cytidylic acid) poly(C) in water. They were found to form polymer complexes with polynucleotide by specific base-base interaction in aqueous solution.
2 citations