Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Room-temperature phosphorescence excitation-emission matrices and multiway methods have been analyzed as potential tools for screening oil samples, based on full matrix information for polyaromatic hydrocarbons. Crude oils obtained from different sources of similar geographic origin, as well as light and heavy lubricating oils, were analyzed. The room-temperature phosphorescence matrix signals were processed by applying multilayer perceptron artificial neural networks, parallel factor analysis coupled to linear discriminant analysis, discriminant unfolded partial least-squares, and discriminant multidimensional partial least-squares (DN-PLS). The ability of the latter algorithm to classify the investigated oils into four categories is demonstrated. In addition, the combination of DN-PLS with residual bilinearization allows for a proper classification of oils containing unsuspected compounds not present in the training sample set. This second-order advantage concept is applied to a classification study for the first time. The employed approach is fast, avoids the use of laborious chromatographic analysis, and is relevant for oil characterization, identification, and determination of accidental spill sources.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/ac702364n | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Systematic variation of the acceptor electrophilicity in donor-acceptor-donor emitters exhibiting efficient room temperature phosphorescence suited for digital luminescence.
Commun Chem
September 2025
Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP), Technische Universität Dresden, Dresden, Germany.
Purely organic materials showing efficient and persistent emission via room temperature phosphorescence (RTP) allow the design of minimalistic yet powerful technological solutions for sensing, bioimaging, information storage, and safety applications using the photonic design principle of digital luminescence. Although several promising materials exist, a deep understanding of the underlying structure-property relationship and, thus, development of rational design strategies are widely missing. Some of the best purely organic emitters follow the donor-acceptor-donor design motif.
View Article and Find Full Text PDFScalable Solvent-Free Synthesis of a Linear Heteroaromatic Trimer with Crystallization-Induced Phosphorescence.
Org Lett
September 2025
Guangdong Basic Research Center of Excellence for Aggregate Science, School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China.
The polymerization mechanism and the identification of key oligomer intermediates during the thermal condensation of benzoguanamine (BG) remain unclear. Herein, we report a novel mixed thermal condensation strategy using BG and a pre-synthesized dimer to selectively synthesize the trimer (BG) with a significantly enhanced yield. Comprehensive characterization techniques confirm the formation of a linear molecular structure for (BG).
View Article and Find Full Text PDFCyclization-enhanced photoactivatable reversible room-temperature phosphorescence for efficient real-time light printing.
Chem Sci
August 2025
State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University 46 Jianshe Road Xinxiang 453007 China +86
The construction of polymer-based photoactivated room-temperature phosphorescence systems remains a prominent research focus, yet the development of ultrafast activated systems under ambient conditions continues to pose a challenge. In this study, cyclized phenothiazine derivatives bearing diverse substituents are synthesized and incorporated into an amorphous polyvinyl alcohol (PVA) matrix, resulting in significantly enhanced dynamic photoactivation characteristics compared with those of their pristine monomeric counterparts. Under ambient conditions and 2 s irradiation, the lifetime and quantum yield of C[4]PTZ-OH@PVA increase by factors of 1.
View Article and Find Full Text PDFIn Pursuit of Low Energy Phosphorescence: Late Metal Coordination Complexes of the Planar, π-extended Bipyridyl Ligand 6,6',7,7'-Biphenanthridine.
Chemistry
September 2025
Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada.
The coordination chemistry of the planar, doubly π-extended bipyridine analog, 6,6',7,7'-biphenanthridine (p-biphe), is presented. The phenanthridine units in p-biphe are fused together at the 6- and 7- positions, and the resulting rigid ligand is compared with the more flexible parent "biphe" fused only at the 6-positions. p-Biphe is intensely fluorescent in solution with a much higher quantum yield, but, unlike biphe, at 77 K the fluorescence is not accompanied by any significant phosphorescence.
View Article and Find Full Text PDFRegioselective construction of two isomeric BN-fused aromatic frameworks enabling the synthesis of ultralong room-temperature phosphorescence materials.
Chem Sci
August 2025
College of Chemistry and Chemical Engineering, Jiangxi Province Engineering Research Center of Ecological Chemical Industry, Jiujiang University Jiujiang 332005 China
BN-fused aromatic compounds have garnered significant attention due to their unique electronic structures and exceptional photophysical properties, positioning them as highly promising candidates for applications in organic optoelectronics. However, the regioselective synthesis of BN isomers remains a formidable challenge, primarily stemming from the difficulty in precisely controlling reaction sites, limiting structural diversity and property tunability. Herein, we propose a regioselective synthetic strategy that employs 2,1-BN-naphthalene derivatives, wherein selective activation of N-H and C-H bonds is achieved in conjunction with -halogenated phenylboronic acids.
View Article and Find Full Text PDF