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Qiu C, Liu H, Wang X, Tao S, Mo J, Chen P, Xiao H, Qi H. Cellulose-based fluorescent chemosensor with controllable sensitivity for Fe 3+ detection. Carbohydr Polym 2024; 346:122620. [PMID: 39245528 DOI: 10.1016/j.carbpol.2024.122620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 07/21/2024] [Accepted: 08/14/2024] [Indexed: 09/10/2024]
Abstract
Polymer-based sensors, particularly those derived from renewable polymers, are gaining attention for their superior properties compared to organic small molecules. However, their complex preparation and poor, uncontrollable sensitivity have hindered further development. Herein, cellulose-based polymer photoluminescence (PL) chemosensors were fabricated using a straightforward and adjustable strategy. Specifically, water-soluble cellulose acetoacetate (CAA) was used as the substance for the in-situ synthesis of 1,4-dihydropyridine (DHPs) fluorescent rings on cellulose chains via a catalyst-free, room-temperature Hantzsch reaction. Benefiting from the synergetic through-space conjugation of DHPs rings and semi-rigid cellulose chains with heteroatoms, the sensors exhibit bright and stable PL properties. Based on this performance, the cellulose-based sensor excels in the specific recognition of Fe3+ in aqueous systems, showing exceptional selectivity, stability, and anti-interference performance due to the synergy between the inner filter effect (IFE) and intramolecular charge transfer (ICT). Theoretical calculations confirm the role of the extended π-conjugated structure at the DHPs-4 position in modulating the sensor sensitivity, achieving a low limit of detection (LOD) of 0.48 μM. Furthermore, the versatility of the Hantzsch reaction shows the potential of this strategy for developing a new generation of biomass-based polymer portable sensors for real-time and on-site detection.
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Affiliation(s)
- Changjing Qiu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - Hongchen Liu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China; College of Textiles, Zhongyuan University of Technology, Zhengzhou 450007, China; National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, Fujian Agriculture and Forestry University, Fuzhou 350108, China.
| | - Xijun Wang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - Shenming Tao
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - Jilong Mo
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - Pinhong Chen
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - He Xiao
- National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, Fujian Agriculture and Forestry University, Fuzhou 350108, China.
| | - Haisong Qi
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China.
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Mahaan R, Narendran MG, John Alphin J, John Bosco A. Combined DFT and QM/MM Modeling on Multifunctional TADF Sensitizers and Hot-Exciton Emitters via Carborane Triads for Blue Hyperfluorescent OLEDs. J Phys Chem A 2024; 128:2611-2628. [PMID: 38506799 DOI: 10.1021/acs.jpca.4c00085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
The scarcity of novel luminogens significantly impedes the advancement of TADF sensitizers and hot exciton emitters, attracting considerable attention for their potential to enhance energy conversion efficiencies in hyperfluorescent OLEDs. In this study, a systematic investigation is employed to design and develop multifunctional materials based on carborane cores through DFT and TD-DFT methods. In pursuit of this objective, 45 carborane triad-type molecules were systematically designed using four donors and two acceptor units. Electronic structure calculations revealed that (i) the singlet, triplet, ΔEST, and SOC values exhibit an increased trend as the carborane core shifts from ortho to meta to para, while an increase in donor strength on the core leads to a decrease in these values. (ii) Moreover, there is a decrease in reorganization energies, absorption wavelengths, ISC, and RISC rates as the carborane switches from ortho to meta to para while witnessing an increase in donor strength. The QM/MM study reveals that para carborane's restricted intramolecular motions improve its solid-state aggregation over ortho carborane and solution phases. Interestingly, carborane triads featuring P-DMB and P-BODIPY acceptor units satisfy the desired criteria for multifunctional TADF sensitizers and hot exciton emitters, respectively.
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Affiliation(s)
- Ramalingam Mahaan
- Advanced Materials Chemistry Laboratory, Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - Moorthy Gnanasekar Narendran
- Advanced Materials Chemistry Laboratory, Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - Joseph John Alphin
- Advanced Materials Chemistry Laboratory, Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
| | - Aruljothy John Bosco
- Advanced Materials Chemistry Laboratory, Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603 203, Tamil Nadu, India
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Fan E, Guo H, Hao T, Zhao R, Zhang P, Feng Y, Liu Y, Deng K. Morpholine-modified polyacrylamides with Polymerization-Induced emission and its specific detection to Cu 2+ ions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 309:123782. [PMID: 38215564 DOI: 10.1016/j.saa.2023.123782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 01/14/2024]
Abstract
In this work, three morpholine-modified polyacrylamide derivatives (MMPAm) were successfully prepared by free radical polymerization of monomers with morpholine moiety. The intramolecular aggregation of morpholine rings on macromolecular backbone gives MMPAm a significant polymerization-induced emission (PIE). Particularly, poly(N-morpholine acrylamide) (PNMPA) has the characteristics of strong fluorescence at 450 nm, and its fluorescence quantum yield reaches 2.87 %. The introduction of morpholine moiety, the length of CH2 spacer between morpholine ring and the backbone and the molecular weight play the important roles in PIE properties of PNMPA. Interestingly, PNMPA can recognize and detect Cu2+ specifically even in the presence of 12 other metal ions by thorough fluorescence quenching, and the detection limit of PNMPA is 17.3 μM. Furthermore, the dynamic quenching of PNMPA by Cu2+ ions and the complexation ratio of 1:2 according to JOB's working diagram were confirmed by fluorescence titration. Under the assistance of EDTA, a reversible detection system for Cu2+ is achieved, and a portable test paper from PNMPA for the detection of Cu2+ was also made. In conclusion, PNMPA is endowed with a significant PIE effect by the intramolecular aggregation of morpholine rings along the backbone in the polymerization of non-fluorescent monomer, and is expected to be a promising material for specific detection to Cu2+ ions.
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Affiliation(s)
- Enze Fan
- Key Laboratory of Analytical Science and Technology of Hebie Province (Project Number: 22567620H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
| | - Huiying Guo
- Key Laboratory of Analytical Science and Technology of Hebie Province (Project Number: 22567620H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
| | - Tingting Hao
- Key Laboratory of Analytical Science and Technology of Hebie Province (Project Number: 22567620H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
| | - Ronghui Zhao
- Key Laboratory of Analytical Science and Technology of Hebie Province (Project Number: 22567620H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, China; Department of Clinical Pharmacy, Affiliated Hospital of Hebei University, Baoding 071002, China
| | - Pengfei Zhang
- Key Laboratory of Analytical Science and Technology of Hebie Province (Project Number: 22567620H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
| | - Yayu Feng
- Key Laboratory of Analytical Science and Technology of Hebie Province (Project Number: 22567620H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
| | - Yunfei Liu
- Key Laboratory of Analytical Science and Technology of Hebie Province (Project Number: 22567620H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
| | - Kuilin Deng
- Key Laboratory of Analytical Science and Technology of Hebie Province (Project Number: 22567620H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, China.
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Recent progresses in the mechanistic studies of aggregation-induced emission-active boron complexes and clusters. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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