Chiral properties of a water soluble reversible pH dependent supramolecular complex between an atropisomerically labeled poly(methacrylic acid) and a cyclodextrin

Mark M. Green; Gerald Schultz; Salil K. Jha; Herbert Morawetz; Herman F. Mark

Chiral properties of a water soluble reversible pH dependent supramolecular complex between an atropisomerically labeled poly(methacrylic acid) and a cyclodextrin

Mark M. Green, Gerald Schultz, Salil K. Jha, Herbert Morawetz, Herman F. Mark

Chemical and Biomolecular Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

In water solution at any pH no circular dichroism is observed in the chromophore of the binaphthyl group centered at near to 220 nm but this is immediately changed on addition of either beta or gamma cyclodextrin. In either case a large circular dichroism signal appears arises from an induced optical activity comparable to naphthalene itself. With beta cyclodextrin the signal is unchanged with the time while with the gamma cyclodextrin the signal increases with a half life of near 30 hours at 6.9 pH. This observation of the induced circular dichroism and the following increase with the time shows an interesting pH dependence.

Original language	English (US)
Pages (from-to)	505-506
Number of pages	2
Journal	American Chemical Society, Polymer Preprints, Division of Polymer Chemistry
Volume	37
Issue number	2
State	Published - Aug 1996
Event	Proceedings of the 1996 ACS Orlando Meeting - Orlando, FL, USA Duration: Aug 25 1996 → Aug 29 1996

ASJC Scopus subject areas

Polymers and Plastics

Cite this

Chiral properties of a water soluble reversible pH dependent supramolecular complex between an atropisomerically labeled poly(methacrylic acid) and a cyclodextrin. / Green, Mark M.; Schultz, Gerald; Jha, Salil K. et al.
In: American Chemical Society, Polymer Preprints, Division of Polymer Chemistry, Vol. 37, No. 2, 08.1996, p. 505-506.

Research output: Contribution to journal › Conference article › peer-review

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title = "Chiral properties of a water soluble reversible pH dependent supramolecular complex between an atropisomerically labeled poly(methacrylic acid) and a cyclodextrin",

abstract = "In water solution at any pH no circular dichroism is observed in the chromophore of the binaphthyl group centered at near to 220 nm but this is immediately changed on addition of either beta or gamma cyclodextrin. In either case a large circular dichroism signal appears arises from an induced optical activity comparable to naphthalene itself. With beta cyclodextrin the signal is unchanged with the time while with the gamma cyclodextrin the signal increases with a half life of near 30 hours at 6.9 pH. This observation of the induced circular dichroism and the following increase with the time shows an interesting pH dependence.",

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journal = "American Chemical Society, Polymer Preprints, Division of Polymer Chemistry",

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T1 - Chiral properties of a water soluble reversible pH dependent supramolecular complex between an atropisomerically labeled poly(methacrylic acid) and a cyclodextrin

AU - Green, Mark M.

AU - Schultz, Gerald

AU - Jha, Salil K.

AU - Morawetz, Herbert

AU - Mark, Herman F.

PY - 1996/8

Y1 - 1996/8

N2 - In water solution at any pH no circular dichroism is observed in the chromophore of the binaphthyl group centered at near to 220 nm but this is immediately changed on addition of either beta or gamma cyclodextrin. In either case a large circular dichroism signal appears arises from an induced optical activity comparable to naphthalene itself. With beta cyclodextrin the signal is unchanged with the time while with the gamma cyclodextrin the signal increases with a half life of near 30 hours at 6.9 pH. This observation of the induced circular dichroism and the following increase with the time shows an interesting pH dependence.

AB - In water solution at any pH no circular dichroism is observed in the chromophore of the binaphthyl group centered at near to 220 nm but this is immediately changed on addition of either beta or gamma cyclodextrin. In either case a large circular dichroism signal appears arises from an induced optical activity comparable to naphthalene itself. With beta cyclodextrin the signal is unchanged with the time while with the gamma cyclodextrin the signal increases with a half life of near 30 hours at 6.9 pH. This observation of the induced circular dichroism and the following increase with the time shows an interesting pH dependence.

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M3 - Conference article

AN - SCOPUS:0030204424

SN - 0032-3934

VL - 37

SP - 505

EP - 506

JO - American Chemical Society, Polymer Preprints, Division of Polymer Chemistry

JF - American Chemical Society, Polymer Preprints, Division of Polymer Chemistry

IS - 2

T2 - Proceedings of the 1996 ACS Orlando Meeting

Y2 - 25 August 1996 through 29 August 1996

ER -

Chiral properties of a water soluble reversible pH dependent supramolecular complex between an atropisomerically labeled poly(methacrylic acid) and a cyclodextrin

Abstract

ASJC Scopus subject areas

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