Article
Spectroscopy
Ye Wang, Dongdong Wang, Song Zhang
Summary: The proton transfer dynamics of Schiff bases are investigated in this study, focused on the excited state intramolecular proton transfer (ESIPT) process of photochromic salicylaldehyde azine (SAA) in solutions. The ESIPT process is found to occur within <200 fs, followed by vibrational relaxation and isomerization processes. These processes are notably influenced by the polarity of the solvents.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Natalia Hachlica, Aleksandra Kolodziejczyk, Michal Rawski, Marcin Gorecki, Aleksandra Wajda, Agnieszka Kaczor
Summary: Environmental factors can compete against the templated growth of amyloid fibrils, and the structural indeterminism originates from deeper levels of the fibril structure.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Jun-Hu Cheng, Xinxue Zhang, Ji Ma, Da-Wen Sun
Summary: In this study, a label-free fluorescent aptasensor based on polythymidine (poly(T))-templated copper nanoclusters (CuNCs) was developed for sensitive detection of tropomyosin (TM) in processed shrimp products. The aptasensor achieved a linear range of 0.1 to 50 μg/mL, a low limit of detection of 0.0489 μg/mL, and excellent recovery percentage in the complex food matrix, providing a new approach for food safety assurance.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Houyang Ge, Xingen Gao, Juqiang Lin, Xin Zhao, Xiang Wu, Hongyi Zhang
Summary: This study employed a deep learning technique called multi-layer perceptron (MLP) to simplify the pre-processing and analysis of blood plasma SERS samples in patients with prostate cancer (PC) and enhance diagnosis using SERS technology. The results showed that the MLP method effectively differentiated between cancer and normal groups with high and stable classification accuracy.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Ciyang Zhang, Yi Wu, Xianyong Hong, Wu Lei, Mingzhu Xia, Fengyun Wang
Summary: In this study, a dual-emission fluorescent probe was prepared for the detection of nitrofurazone. The probe exhibited stable dual-emission signal, high sensitivity, and low detection limit. This work expands the application of LnMOFs in the field of ratiometric detection and provides a favorable fluorescent probe for the quantitative detection of nitrofurazone.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Zhenming Hao, Liming Hu, Ruyu Yan, Luyu Pei, Shanyan Mo
Summary: In this study, we developed a fluorescent probe for the detection of OAP, which is rapid, sensitive, and specific. The detection range is wide, and the accuracy and precision of the results were verified using HPLC analysis. This study offers a valuable tool for environmental and health management.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Ahmet Battal, Solomon Bezabeh Kassa, Nuray Altinolcek Gultekin, Mustafa Tavasli, Yavuz Onganer
Summary: In this study, probe L was tested as a colorimetric and ratiometric fluorescent probe for the detection of anions, cations, and neutral molecules. Probe L showed selectivity and sensitivity towards CN- ions and formed a new adduct through nucleophilic conjugate addition. This method demonstrated a low limit of detection and successful application in the detection of CN- in real-world water samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yajie Zhang, Changjiao Shang, Chaofan Sun, Lingling Wang
Summary: This study investigates the absorption capacities and antioxidant activities of four stilbene derivatives using computational chemistry and DPPH radical scavenging experiment. The results show that these compounds can effectively absorb UV rays and protect against UVB radiation, while also exhibiting strong antioxidant activities. EHDB and HPTP perform the best and are suitable for sunscreen formulation.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Bin Wang, Wei Zheng, Jiashang Chen, Yaru Wang, Xing Duan, Shiyu Ma, Zhe Kong, Tifeng Xia
Summary: In this study, we successfully synthesized a stable anionic microporous metal-organic framework and constructed a fluorescent probe for sensing Fe3+ and Cu2+ ions. The probe showed distinct fluorescent response for both ions and a ratiometric response for Cu2+ ions. This research provides a rare example of a sensor based on Ln-MOFs to distinguish Fe3+ and Cu2+ ions and also introduces a molecular logic gate device to improve the distinction.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yuanyuan Wu, Hanling Huang, Fengyang Jing, Yaping Wang, Shijun Chen, Lin Wang, Yiyi Li, Shicong Hou
Summary: In this study, three ESIPT fluorescent probes JLO/JLM/JLP were designed and synthesized using 2-(2-hydroxyphenyl) benzothiazole (HBT) as the fluorophore and introducing weakly absorbing bromine atoms to accelerate electron transfer. The probe JLO exhibited the fastest response time (30 min) and highest fluorescence quantum yield (CYRILLIC CAPITAL LETTER EF = 0.731), and also had a large Stokes shift and high sensitivity, making it a potential candidate for detecting endogenous and exogenous H2O2 in living cells for biological applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Peng-Yuan Li, Yi Liu, Si-Jia Wang, Dong Liu, Guang-Yue Li
Summary: The complete excited-state sensing mechanism of a fluorescent probe capable of distinguishing different thiols has been investigated using TDDFT method. The study explains the fluorescence differences in the detection of thiols at the molecular level, and confirms that the distance between reactive sites can be used to differentiate thiols and control fluorescence activity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Hua-jin Zeng, Li Sun, Si-meng Liu, Ling-bo Qu, Ran Yang
Summary: This study successfully synthesized a novel 4-mercaptophenylboronic acid functionalized MoS2 quantum dots and demonstrated their ability to inhibit protein aggregation and reduce cytotoxicity. The quantum dots showed good biocompatibility and solubility, making them potential candidates for the treatment of amyloid-related diseases.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Zdravka Slavkova, Denitsa Yancheva, Julia Genova
Summary: Lipid membranes are essential for biological cells, and understanding their structure and function is crucial for medical and pharmacological research. This study investigated the impact of the disaccharide sucrose on the physical and chemical properties of the SOPC lipid system. The results showed that the addition of sugar significantly altered the thermodynamic and structural properties of SOPC, and spectral evidence suggested a mechanism of interaction between the sugar and SOPC. These findings contribute to the understanding of sugar-lipid interactions and highlight the potential of sucrose as a cell protector.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Nazia Nasr, Muhammad Shafi, Tingkai Zhao, Rawaid Ali, Ishaq Ahmad, Muhammad Khan, Ahmed Deifalla, Adham E. Ragab, Mohd Zahid Ansari
Summary: This study presents a composite structure using AuNPs and graphene for surface-enhanced Raman scattering and surface plasmonic resonance fiber sensors. The sensor shows high sensitivity and low detection limit, and can detect both glucose and thiram, providing a solution for pesticide residue detection in the environment.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yukun Zhang, Chen Xu, Hui Sun, Jindong Ai, Mingguang Ren, Fangong Kong
Summary: In this paper, a novel fluorescent probe LN-NCS was designed and synthesized for detecting cysteine in lysosomes. The probe has a large Stokes shift, low cytotoxicity, low detection limit, and high selectivity, and can be used to detect cysteine in cells, plant roots, food samples, and environmental water samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Qiang Zhang, Chao Yuan, Lingxiao Wang, Pengchen Su, Long Yu, Xiangyang Hao, Suhua Wang
Summary: A novel fluorescent sensor based on carbon spheres was developed for efficient detection of hypochlorite. The sensor exhibited advantages such as simple preparation, good water solubility, and low detection limit. A field visualization platform based on smartphone was also designed for real-time monitoring of hypochlorite in environmental water samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Fatemeh Ahmadinouri, Parviz Parvin, Ahmad Reza Rabbani
Summary: In this paper, a modified Beer-Lambert method of laser-induced fluorescence spectroscopy is proposed for rapid identification and differentiation of crude oil fractions, which is of great significance in marine pollution research.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Jin-Mei Xie, Xiao-Ying Cui, Hongbo Liu, Yan Leng, Chun-Gang Min, Ai-Min Ren
Summary: This study investigates the chemiluminescent reaction mechanism and photophysical properties of CLM analogues. The results show that the introduction of triphenylamine and π-bridge can improve the injection abilities and shift the emission spectra to longer wavelengths of light emitters. Therefore, TPA-CLM and TPA-TP-CLM are potential candidates for bioinspired OLED applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Ming Chen, Xing Zhao, Bin Wang, Hongliang Liu, Zhixiang Chen, Lu Sun, Xiaoxuan Xu
Summary: This study presents a novel graphene-wrapped petal-like gap-enhanced Raman tags with mesoporous silica shells (MS-GPGERTs). These nanoplatforms exhibit great potential for early diagnosis and efficient treatment of diseases, especially tumors, due to their multifunctional capabilities of imaging, diagnosis, and therapy. The results show that MS-GP-GERTs have enhanced photothermal effect and excellent stability in physiological environments, making them promising candidates for repeated photothermal therapy. Additionally, MS-GP-GERTs demonstrate low detection limit, large imaging depth, and great imaging ability for simulated biological tissue and cells.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Hijran Sanaan Jabbar
Summary: A simplified paper-based analytical device was described for the determination of sulfa drugs. The method is simple, cost-effective, and sensitive, making it suitable for pharmaceutical applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
