tonic polymer-polymer interaction was studied in aqueous solution for poly(D-glutamic acid)(PGA) and poly(allyl amino)(PAA) as functions of pH, the mole ratio of functional unit of the two polymers and temperature by means of circular dichroism. Induced circular dichroism was also studied on PGA/PAA/methyl orange(MO) complexes. Strong interpolymer complexes were found to be formed. Although PGA itself is well known to take the random coil conformation at such a pH above 7, the PGA conformation in the PGA/PAA complexes took the α-helical conformation at such a high pH as ca. 10.5. The α-helical conformation of PGA in the complex did not change as the temperature increased up to 60℃. A positive ellipticity at 325nm and a negative ellipticity at 450nm indicated a left-handed super helical arrangement of MO molecules about the left-handed o-helix of PGA, where PAA chains were intercalated.

수용액중에서 폴리글루탐산(PGA)과 폴리알릴아민(PAA)의 고분자간 전해질복합체 형성에 있어서 pH, 몰비 그리고 온도에 따른 2차구조의 변화를 원편광이색성을 이용하여 관찰하였다. 또한, 전해질복합체 PGA/PAA/메틸오렌지(MO)에 대한 유발원편광이색성에 대해서도 검토되었다. 그 결과, PGA와 PAA는 강한 고분자간 복합체가 형성되었고, PGA단독에서는 pH 7이상에서 완전 random coil의 구조이나 PAA와 복합체형성으로 인하여 pH 10.5에서도 9-helix구조를 나타내었다. 복합체 의 PGA α-helix 구조는 온도가 60℃에서도 유지 되었다. PGA/PAA/MO 복합체의 325nm에서의 정-타원율과 450nm에서의 부-타원율은 PGA의 α-helix로 인하여 MO도 α-helix배열을 하는 것으로 나타났다.

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