探索含有各种异循环的NIR方形对比剂:合成,光学特性和应用
Shahir Sarasiya1,2, Sara Sarasiya1, Maged Henary1,2
1Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA.
Pharmaceuticals (Basel, Switzerland)
|September 28, 2023
概括
这项研究回顾了基于醇,醇和胺的方色素染料. 虽然英多尔方体具有局限性,但氨酸和氨酸为近红外应用提供了卓越的光学性能.
科学领域:
- 有机化学 有机化学
- 材料科学 材料科学 材料科学
- 摄影化学的使用.
背景情况:
- 方染料是有价值的近红外 (NIR) 对比剂.
- 印醇是正方形染料开发中的常见异环,提供高量子产量和分子吸收性.
- 基于印的方染料受到最大吸收度在700nm附近的限制.
研究的目的:
- 评价和比较基于醇,醇和胺的正方形染料的光学特性和应用.
- 突出基于氨酸和氨酸的方色素染料在先进的NIR应用中的潜力.
- 为了鼓励在方色染料设计中探索新型异环.
主要方法:
- 文献综述的重点是从2018年至2023年间的基于醇的方色素染料.
- 对基于诺林和胺的方色素染料进行全面的文献搜索.
- 分析报告的光学特性 (摩尔吸收率,最大吸收率) 和应用.
主要成果:
- 基于印的方染料具有很高的量子产量,但仅限于700nm的吸收度.
- 基於金素和胺的方染料顯示了擴展結合的潛力,其滅系數>100,000 M-1 cm-1 和吸收度>800 nm.
- 与以醇为基础的染料相比,基于氨酸和氨酸的方色素染料的开发有限.
结论:
- oline和perimidine异循环在开发具有增强光学性质的先进方形色素染料方面,比印具有显著的优势.
- 对林和胺基方染料的进一步研究是有必要的,以释放它们在NIR应用中的全部潜力.
- 探索多样化的异环基改性是克服当前方形染料技术局限性的关键.
相关概念视频
01:182D NMR: Overview of Heteronuclear Correlation Techniques
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Heteronuclear correlation spectroscopy is an analytical technique that investigates the coupling between different types of nuclei, often a proton and an X-nucleus, such as carbon-13 or nitrogen-15. This method is commonly used in nuclear magnetic resonance (NMR) spectroscopy to gain insights into complex chemical compounds' structural and compositional aspects. A typical heteronuclear correlation spectrum displays X-nucleus chemical shifts on one axis and a proton spectrum on the other...
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01:11Applications of IR Spectroscopy: Overview
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The non-destructive nature and ability to provide valuable chemical information make IR spectroscopy a versatile technique with broad applications in various scientific and industrial fields. IR spectroscopy is commonly used to identify and characterize organic and inorganic compounds. It provides information about the functional groups present in a molecule and the bonding between atoms. This helps in the structural elucidation of compounds during organic synthesis, pharmaceutical research,...
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01:192D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)
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Heteronuclear single-quantum correlation spectroscopy (HSQC) is a 2D NMR technique that reveals one-bond correlations between hydrogen and a heteronucleus. The HSQC experiment is similar to the heteronuclear correlation experiment (HETCOR) but is more sensitive. In the HSQC spectrum, the proton chemical shift is plotted on the horizontal F2 axis, while the 13C chemical shift is plotted on the vertical F1 axis. The corresponding proton and 13C spectra are also shown. The HSQC contour plot does...
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01:13¹H NMR: Complex Splitting
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Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied...
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01:26Spectroscopy of Carboxylic Acid Derivatives
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01:12Two-Dimensional (2D) NMR: Overview
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The 1D NMR spectrum of large and complex molecules like natural products has complicated splitting patterns and overlapping signals, which can be easily interpreted using 2-dimensional (2D) NMR. Unlike 1D NMR, 2D NMR has two frequency axes that provide the coupling information between the nucleus A and nucleus B in a molecule. The process from which 2D spectra are obtained has four steps.
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse....
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse....
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