操纵铬化锌量子点的缺陷态发射及其对叶绿素光谱响应的影响

IF 4.3 2区 化学 Q1 SPECTROSCOPY
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引用次数: 0

摘要

水溶性锌基量子点(QDs)因其生物相容性和低毒性而备受关注。它们经常被用于与生物技术相关的研究,尤其是农业研究。然而,如何控制锌基量子点的光学特性仍然是一个挑战。在这项工作中,我们通过两种不同的途径成功地控制了 ZnSe QDs 的缺陷态发射:1)在富硒内核周围形成富硫外区;2)改变封端剂。利用两种不同的封端剂:N-乙酰-L-半胱氨酸(NAC)和 3-巯基丙酸(3-MPA),成功合成了具有富Se内核和富S外区的梯度合金化 ZnSeS QDs。在 NAC 封端的 ZnSeS QDs 中,源于表面缺陷的发射贡献几乎消失,从而显著提高了光致发光量子产率。此外,还研究了锌基 QDs 与叶绿素分子之间的相互作用。与 3-MPA 封端的 ZnSeS QDs 相互作用后,叶绿素的吸收能力明显增强。此外,叶绿素的光谱响应也可以通过与 3-MPA 封端的 ZnSeS QDs 的相互作用来调节,这可以通过使用不同化学成分的 ZnSeS QDs 来实现。我们的研究结果表明,ZnSeS QDs 具有农业应用潜力,可作为叶绿素采光能力的调节剂。通过 QD 相互作用来调节叶绿素光谱响应的能力为优化光合生物对光的利用提供了新的可能性,从而有助于提高作物产量以及在自然和人工生态系统中更有效地利用光能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Manipulation of defect state emission in Zn chalcogenide quantum dots and their effects on chlorophyll spectral response

Manipulation of defect state emission in Zn chalcogenide quantum dots and their effects on chlorophyll spectral response
Water soluble Zn based quantum dots (QDs) are of interest due to their biocompatibility and less toxic features. They have been frequently used in studies related to biotechnology, especially in agriculture studies. However, to control the optical properties of Zn based QDs has still been a challenge. In this work, the defect state emission of ZnSe QDs was successfully controlled through two different routes; 1) By creating a sulfur rich outer region around the Se rich core 2) By changing the capping agent. Gradient alloyed ZnSeS QDs with Se rich core and S rich outer region were successfully synthesized with two different capping agents; N-Acetyl-L-Cysteine (NAC) and 3-Mercaptopropionic Acid (3-MPA). The contribution of emission originated from surface-defects almost disappeared in NAC capped ZnSeS QDs, with causing a significant increase in photoluminescence quantum yield. The interaction between Zn based QDs with chlorophyll molecules was also investigated. The absorption capacity of chlorophylls significantly enhanced upon interaction with 3-MPA capped ZnSeS QDs. Also, the spectral response of chlorophylls could be modulated through interaction with 3-MPA capped ZnSeS QDs, which could be manipulated by using ZnSeS QDs with different chemical composition. Our results indicated that ZnSeS QDs have potential to be used in agriculture, which could act as a modulator of light-harvesting capacity of chlorophylls. The ability to modulate chlorophyll spectral responses through QD interaction opens new possibilities for optimizing light utilization in photosynthetic organisms, thereby contributing to enhanced crop yields and more efficient use of light energy in natural and artificial ecosystems.
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来源期刊
CiteScore
8.40
自引率
11.40%
发文量
1364
审稿时长
40 days
期刊介绍: Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (SAA) is an interdisciplinary journal which spans from basic to applied aspects of optical spectroscopy in chemistry, medicine, biology, and materials science. The journal publishes original scientific papers that feature high-quality spectroscopic data and analysis. From the broad range of optical spectroscopies, the emphasis is on electronic, vibrational or rotational spectra of molecules, rather than on spectroscopy based on magnetic moments. Criteria for publication in SAA are novelty, uniqueness, and outstanding quality. Routine applications of spectroscopic techniques and computational methods are not appropriate. Topics of particular interest of Spectrochimica Acta Part A include, but are not limited to: Spectroscopy and dynamics of bioanalytical, biomedical, environmental, and atmospheric sciences, Novel experimental techniques or instrumentation for molecular spectroscopy, Novel theoretical and computational methods, Novel applications in photochemistry and photobiology, Novel interpretational approaches as well as advances in data analysis based on electronic or vibrational spectroscopy.
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