Lifetimes of long-lived states in inhomogeneous magnetic fields

被引：4

作者：

Singh, Maninder ^{[1
,2
]}

Chinthalapalli, Srinivas ^{[2
,3
]}

Bodenhausen, Geoffrey ^{[2
,4
,5
,6
]}

机构：

[1] Indian Inst Technol, Dept Chem, New Delhi 110016, India

[2] Ecole Polytech Fed Lausanne, Inst Sci & Ingn Chim, CH-1015 Lausanne, Switzerland

[3] Cent Univ Karnataka, Sch Chem Sci, Dept Chem, Gulbarga 585311, Karnataka, India

[4] PSL Res Univ, Ecole Normale Super, Dept Chim, F-75005 Paris, France

[5] Univ Paris 06, Sorbonne Univ, F-4 Paris, France

[6] CNRS, UMR LBM 7203, F-75005 Paris, France

来源：

CHEMICAL PHYSICS LETTERS | 2015年 / 623卷

基金：

欧洲研究理事会; 瑞士国家科学基金会;

关键词：

MULTIPLE-SPIN SYSTEMS; HIGH-RESOLUTION NMR; SINGLET-STATES; 4-SPIN SYSTEMS; 3-SPIN;

D O I：

10.1016/j.cplett.2015.01.045

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Long-lived states (LLS), also known as singlet states, have been widely studied in the last decade. So far, LLS have only been observed in homogeneous magnetic fields, which preclude applications to many biological samples that are inherently inhomogeneous. We present a method to measure the lifetimes T-LLS of long-lived states in inhomogeneous magnetic fields, which combines established sequences for the excitation of LLS with their conversion into long-lived coherences (LLC) that can be detected by windowed acquisition. The method is applied to a pair of diastereotopic scalar-coupled protons of glycine in the dipeptide Alanine-Glycine (Ala-Gly). (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：113 / 116

页数：4

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