The synthesis of functionalized naphthalimide (compound 1) and its application for the preparation of pH chemosensor was described. The fluorescence enhancement of compound 1 with the increase of hydrogen ion concentration is based on the hindering of photo-induced electron transfer (PET) from aliphatic amine group to the naphthalimide. The comparison of this method with some other fluorescence methods based on naphthalimide for the measurement of pH indicated that the method can be applied in aqueous solutions rather than organic solutions. The analytical performance characteristics of the proposed pH chemosensor were also investigated. The chemosensor can be applied to the determination of pH between 3.20 and 7.80. Common inorganic ions do not show obvious interference for pH measurements. Moreover, the response of the chemosensor for pH is fast (response time less than 3 min). In addition, the chemosensor has been used for determination of pH in urine samples with satisfactory results.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.2116/analsci.28.743 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Triphenylamine-Naphthalimide-Based "On-Off-On" AIEgen for Imaging Golgi Apparatus and Endoplasmic Reticulum.
ACS Appl Bio Mater
January 2025
Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382355, India.
Golgi apparatus (GA) and endoplasmic reticulum (ER) are two of the interesting subcellular organelles that are critical for protein synthesis, folding, processing, post-translational modifications, and secretion. Consequently, dysregulation in GA and ER and cross-talk between them are implicated in numerous diseases including cancer. As a result, simultaneous visualization of the GA and ER in cancer cells is extremely crucial for developing cancer therapeutics.
View Article and Find Full Text PDFCarbonic Anhydrase IX Targeted Polyaspartamide fluorescent Probes for Tumor imaging.
Int J Nanomedicine
January 2025
College of Chemical and Material Engineering, Quzhou University, Quzhou, Zhejiang Province, 324000, People's Republic of China.
Background: Precise intraoperative tumor delineation is essential for successful surgical outcomes. However, conventional methods are often incompetent to provide intraoperative guidance due to lack specificity and sensitivity. Recently fluorescence-guided surgery for tumors to delineate between cancerous and healthy tissues has attracted widespread attention.
View Article and Find Full Text PDFThrough-Space Charge Transfer Dynamic Mechanism in V-Shaped Flexible Carbazole Aromatic Imides Dyads.
Chemistry
January 2025
Beijing University of Posts and Telecommunications, School of Science, Beijing, CHINA.
Cofacial electron donor-acceptor dyads exhibiting through-space charge-transfer (TSCT) characteristics are widely employed in the development of optoelectronic functional materials. The flexible molecular frameworks between the electron donor and acceptor components allow dynamic modulation of electronic coupling, influenced by excited-state structural relaxation or intermolecular interactions, thereby affecting the charge-transfer (CT) dynamics and the emission properties of TSCT states. In this work, we examine the TSCT dynamic processes of two electron donor-acceptor dyads, CzPhNI and CzPhPI formed by ortho-substitution of phenyl linkage with V-shaped flexible TSCT structures using carbazole as donor and naphthalimide or phthalimide as acceptor.
View Article and Find Full Text PDFDual-Lock System for High Sensitivity and Selectivity in Redox Enzyme Activation and Imaging.
Anal Chem
January 2025
Department of Chemistry, Chung-Ang University, Seoul 06974, South Korea.
Reductase expression is a potential indicator of cellular pathology. Single-detection systems for reductases have been developed, however, the development of dual-detection systems remain largely unexplored. We rationally designed a dual-lock fluorescent probe that exhibited a high signal-to-noise ratio with a fluorescence Off-On response exclusively for the simultaneous activity of two reductases, NTR and hNQO1, which are overexpressed in cancer hypoxia.
View Article and Find Full Text PDFConstruction of naphthalimide-based fluorescent probe for sequential detection of Al and NOR and its application in tea and honey.
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, Jiangsu, PR China. Electronic address:
Metal aluminum ions and the antibiotic NOR have both benefited humanity and due to improper use, posed significant threats to the environment and human health. Although the correct and rational use of these substances is crucial, developing real-time, rapid, and highly sensitive detection of trace aluminum ions and NOR in the environment and organisms is more important for early diagnosis of potential related diseases. After several decades of development, fluorescence analysis has become a mainstream research method due to its ability to meet these requirements.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!