US-12618922-B2 - Nuclear magnetic resonance spectrometer

US12618922B2US 12618922 B2US12618922 B2US 12618922B2US-12618922-B2

Abstract

A nuclear magnetic resonance spectrometer is provided, including a body, a moving mechanism, a driving device, a probe, a superconducting magnet, and a light source. The moving mechanism is disposed on the body and includes a sample tube. The driving device is disposed on the body and is used to drive the moving mechanism to move the sample tube. The probe is disposed inside the body and under the moving mechanism, and has a channel for the sample tube to enter the probe. The superconducting magnet is disposed inside the body and located at the outer side of the probe. The light source is disposed inside the body, and is located outside the moving path of the sample tube or above the sample tube.

Inventors

Ching-Yu Chou

Assignees

Ching-Yu Chou

Dates

Publication Date: 20260505
Application Date: 20230425
Priority Date: 20230203

Claims (15)

1 . A nuclear magnetic resonance (NMR) spectrometer, comprising: a body; a moving mechanism, having a sample tube, a rail and a slider, the rail disposed on the body and extends into the body, the slider disposed on the rail, the sample tube disposed on the slider; a driving device, disposed on the body and used for driving the slider to move along the rail, wherein the slider drives the sample tube to move along a moving path; a probe, disposed inside the body and located below the rail, and having a channel for the sample tube to enter the probe; a superconducting magnet, disposed inside the body and located an outer side of the probe; and a light source disposed inside the body, disposed on the rail, and located at an outer side of the moving path of the sample tube or above the sample tube.
2 . The NMR spectrometer according to claim 1 , wherein the light source comprises a base and at least one light-emitting element, the base is disposed on the moving mechanism, located at the outer side the moving path of the sample tube, and parallel to the moving path of the sample tube; the at least one light-emitting element is fixed to the base.
3 . The NMR spectrometer according to claim 2 , wherein the light source further comprises a reflective element, the reflective element is disposed on the base and has a reflective hole, and the at least one light-emitting element is located in the reflective hole.
4 . The NMR spectrometer according to claim 3 , wherein inner surface of the reflective hole is an optical reflective curved surface.
5 . The NMR spectrometer according to claim 2 , wherein the light source comprises a plurality of light-emitting elements, and the light emitting elements are arranged in a direction parallel to the length direction of the sample tube.
6 . The NMR spectrometer according to claim 2 , wherein when the light source is located above the sample tube, the body comprises an adjustment structure, the adjustment structure is connected to the light source and used to adjust the position of the light source in the body.
7 . The NMR spectrometer according to claim 6 , wherein the adjustment structure is a rod, and the rod has an adjustable length.
8 . The NMR spectrometer according to claim 1 , wherein the light source comprises a base, a light-emitting element, and a light guide, the base is disposed in the moving mechanism and located above the sample tube, and can move along the moving mechanism; the light-emitting element is fixed to the base, the light guide is disposed in the sample tube, and one end of the light guide faces the light-emitting element.
9 . The NMR spectrometer according to claim 8 , wherein the light source further comprises a reflective element, the reflective element is disposed on the base and has a reflective hole, and the light-emitting element is located in the reflective hole.
10 . The NMR spectrometer according to claim 9 , wherein inner surface of the reflective hole is an optical reflective curved surface.
11 . The NMR spectrometer according to claim 8 , wherein an axis of the light-emitting element is aligned with an axis of the sample tube.
12 . The NMR spectrometer according to claim 1 , wherein the light source is disposed in the probe, and is located at an outer side of the moving path of the sample tube.
13 . The NMR spectrometer according to claim 12 , wherein the probe has an internal chamber, the chamber communicates with the channel, and the sample tube enters the chamber through the channel; wherein, the light source includes at least one light-emitting element, and the at least one light-emitting element is fixed inside the chamber.
14 . The NMR spectrometer according to claim 13 , wherein the light source comprises a plurality of light-emitting elements, and the light-emitting elements are arranged in a direction parallel to the length direction of the sample tube.
15 . The NMR spectrometer according to claim 13 , wherein the light source surrounds the outside of the chamber, the light source includes a plurality of light-emitting elements, and the light emitting elements are located inside the chamber and distributed around the chamber.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the priority of Taiwanese patent application No. 112201000, filed on Feb. 3, 2023, which is incorporated herewith by reference. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to a nuclear magnetic resonance (NMR) spectrometer. 2. The Prior Arts Direction Irradiation of samples during NMR measurements is used in a variety of applications such as photochemically induced dynamic nuclear polarization (photo-CIDNP), ultraviolet-visible (UV-VIS) spectrum in NMR, photo-irradiated trans-cis conversion, and any photo-catalyst research topic. In the magnetic field of the nuclear magnetic resonance spectrometer, due to the restriction of geometric shape and material limitations, light sources such as lasers or light-emitting diodes can only be disposed on the outside of the housing of the Dewar bottle of the NMR spectrometer. In order to irradiate the sample with the light emitted by the light source, conventional NMR spectrometers must be coupled to the light source via an optical fiber extending into a channel in the housing of the NMR spectrometer and inserted into a sample tube containing the sample. The optical fiber can guide the light emitted by the light source into the sample tube to irradiate the sample in the sample tube. However, the optical fiber hinders the movement of the sample during transporting the sample between positions of different magnetic field magnitudes in the NMR spectrometer and irradiating the sample with light. SUMMARY OF THE INVENTION A primary objective of the present invention is to provide a nuclear magnetic resonance (NMR) spectrometer, wherein the light source can directly irradiate the sample tube inside the body and will not hinder the movement of the sample tube. In order to achieve the aforementioned objective, the invention provides a nuclear magnetic resonance spectrometer, including a body, a moving mechanism, a driving device, a probe, a superconducting magnet, and a light source. The moving mechanism is disposed on the body and includes a sample tube. The driving device is disposed on the body and is used to drive the moving mechanism to move the sample tube. The probe is disposed inside the body and under the moving mechanism, and has a channel for the sample tube to enter the probe. The superconducting magnet is disposed inside the body and located at the outer side of the probe. The light source is disposed inside the body, and is located outside the moving path of the sample tube or above the sample tube. In a preferred embodiment, the light source includes a base and at least one light-emitting element, the base is disposed on the moving mechanism, located at an outer side the moving path of the sample tube, and parallel to the moving path of the sample tube; the at least one light-emitting element is fixed to the base. In a preferred embodiment, the light source further includes a reflective element, the reflective element is disposed on the base and has a reflective hole, and the at least one light-emitting element is located in the reflective hole. In a preferred embodiment, inner surface of the reflective hole is an optical reflective curved surface. In a preferred embodiment, the light source includes a plurality of light-emitting elements, and the light emitting elements are arranged in a direction parallel to the length direction of the sample tube. In a preferred embodiment, the light source includes a base, a light-emitting element, and a light guide, the base is disposed in the moving mechanism and located above the sample tube, and can move along the moving mechanism; the light-emitting element is fixed to the base, the light guide is disposed in the sample tube, and one end of the light guide faces the light-emitting element. In a preferred embodiment, the light source further includes a reflective element, the reflective element is disposed on the base and has a reflective hole, and the light-emitting element is located in the reflective hole. In a preferred embodiment, inner surface of the reflective hole is an optical reflective curved surface. In a preferred embodiment, an axis of the light-emitting element is aligned with an axis of the sample tube. In a preferred embodiment, when the light source is located above the sample tube, the body includes an adjustment structure, the adjustment structure is connected to the light source and used to adjust the position of the light source in the body. In a preferred embodiment, the adjustment structure is a rod, and the rod has an adjustable length. In a preferred embodiment, the moving mechanism further includes a rail and a slider, the rail is disposed on the body and extends into the body, the slider is disposed on the rail, the sample tube is disposed on the slider, the driving device drives the slider to move along the rail, the probe is located below the rail, and the light source is disposed on