Direct observation of rhodamine dimer structures in water

被引：64

作者：

Ilich, P ^{[1
]}

Mishra, PK ^{[1
]}

Macura, S ^{[1
]}

Burghardt, TP ^{[1
]}

机构：

[1] MAYO CLIN & MAYO FDN,DEPT BIOCHEM & MOL BIOL,ROCHESTER,MN 55905

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 1996年 / 52卷 / 10期

基金：

美国国家卫生研究院;

关键词：

dimer conformation; intermolecular distance; self-association; 2D proton NMR; xanthene dye;

D O I：

10.1016/0584-8539(96)01719-9

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Self-association of rhodamine B, rhodamine 6G, and their mixture in aqueous solution has been studied by two-dimensional proton-proton nuclear Overhauser effect spectroscopy in the laboratory (NOESY) and rotating frames (ROESY). The strength of the observed cross-peaks between protons that are distant in the rhodamine monomer demonstrates intermolecular proximity between homodimers of rhodamine B and rhodamine 6G, and between heterodimers of rhodamine B and rhodamine 6G. It is shown that stacking of the xanthene rings occurs in all homo- and heterodimer interactions.

引用

页码：1323 / 1330

页数：8

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