ハイブリッドNMR:溶液と固体NMRの結合

Pallavi Thiagarajan-Rosenkranz¹, Adrian W Draney¹, Justin L Lorieau¹

¹Department of Chemistry, University of Illinois at Chicago , 845 West Taylor Street, Chicago, Illinois 60607, United States.

Journal of the American Chemical Society

|March 14, 2017

まとめ

ハイブリッド核磁気共鳴 (NMR) は,溶液中の高解像度測定を提供します. この新しい技術は分子特性を正確に測定し電子の密度や運動に関する詳細を明らかにします

科学分野:

生物物理化学
スペクトロスコーピー
材料科学

背景:

核磁共振 (NMR) は分子構造の決定に不可欠です.
溶液状態と固体状態のNMRを組み合わせることで,相乗効果がもたらされます.
特定の分子テンソールを測定すると,構造と動的情報を詳細に提供します.

研究の目的:

新しい技術としてハイブリッドNMR (hdNMR) を導入する.
部分的にランダムに指向された (PRO) 結晶水素ゲルのサンプルの使用を開発し,検証する.
水溶液で正確なテンソー測定を行うためのhdNMRの能力を実証する.

主な方法:

HdNMRの背後にある理論を開発しました.
部分的にランダムに指向した (PRO) 結晶水素ゲルのサンプルを使用した.
高精度測定のための新しいパルスシーケンスを実装しました.

主要な成果:

固体状態と溶液状態のNMR特性を組み合わせた高解像度スペクトル.
アスパルト酸のH−α−13二極テンソールとカルボキシレート化学シフトアニソトロピーテンソールを正確に測定した.
電子密度分布,原子間距離,運動に関する詳細な情報を提供することを示した.

結論:

hdNMRは水溶液中の分子を特徴づける強力なツールです
PROサンプルは,溶液状態の解像度で高品質の固体NMRスペクトルを可能にします.
hdNMRの測定は分子構造とダイナミクスを前例のない詳細で示しています

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