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Fu Q, Sun X, Zhang T, Pei J, Li Y, Li Q, Zhang S, Waterhouse GIN, Li H, Ai S. Porphyrin-based covalent organic polymers with customizable photoresponses for photodynamic inactivation of bacteria. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167475. [PMID: 37797764 DOI: 10.1016/j.scitotenv.2023.167475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/30/2023] [Accepted: 09/28/2023] [Indexed: 10/07/2023]
Abstract
Porphyrin-linked covalent organic polymers (COPs) provide a reliable photocatalytic platform, while photodynamic inactivation (PDI) induced by reliable porphyrin-based COPs is considered to be an effective method to resist microbial contamination. Herein, three tunable porphyrin-based covalent organic polymers (H2-Por-COPs, OH-Por-COPs, and Zn-Por-COPs) are designed and employed for the PDI of Staphylococcus aureus and Escherichia coli under visible light illumination. Interestingly, singlet oxygen (1O2) generation by the Por-COPs can be manipulated via intramolecular regulation with the order Zn-Por-COP > OH-Por-COP > H2-Por-COP. With rationally tune, the Zn-Por-COP demonstrated remarkable antibacterial activity against Staphylococcus aureus (kill percentage 99.65 % ± 0.24 %) and Escherichia coli (kill percentage 97.25 % ± 1.78 %) in only 15 min under visible-light irradiation. Density functional theory (DFT) calculations and photophysical tests showed that the presence of electron-donating -OH groups on the aromatic linkers and Zn2+ ions in porphyrin units narrowed the HOMO-LUMO gap, enhancing both light absorption, intersystem crossing (ISC) and 1O2 generation for more efficient bacteria inactivation. This work can be applied to efficiently screen suitable photosensitizers and provides a rational regulatory strategy for PDI of pathogenic bacteria.
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Affiliation(s)
- Quanbin Fu
- College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, PR China; College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, PR China
| | - Xin Sun
- College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, PR China
| | - Tingting Zhang
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, PR China; Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian 271018, PR China
| | - Jian Pei
- College of Life Sciences, Shandong Agricultural University, Taian 271018, PR China
| | - Yijing Li
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, PR China; Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian 271018, PR China
| | - Qingbo Li
- Center for Optics Research and Engineering, Key Laboratory of Laser & Infrared System, Ministry of Education, Shandong University, Qingdao 266237, PR China
| | - Shikai Zhang
- College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, PR China; College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, PR China
| | | | - Houshen Li
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, PR China; Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian 271018, PR China.
| | - Shiyun Ai
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, PR China; Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian 271018, PR China.
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2
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Zhang Y, Pan X, Shi H, Wang Y, Liu W, Cai L, Wang L, Wang H, Chen Z. Molecular engineering to red-shift the absorption band of AIE photosensitizers and improve their ROS generation ability. J Mater Chem B 2023; 11:3252-3261. [PMID: 36971133 DOI: 10.1039/d2tb02829h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Increasing the number of acceptors and extending their π-conjugation will red-shift the absorption-emission band, increase the maximum molar extinction coefficient, and improve the ROS generation ability of AIE-photosensitizers.
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Affiliation(s)
- Yuhui Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian Academy, University of Chinese Academy of Sciences, Fuzhou, Fujian 350108, China.
- Fujian Agriculture and Forestry University Fuzhou, Fuzhou, Fujian 350002, China
| | - Xiaohong Pan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian Academy, University of Chinese Academy of Sciences, Fuzhou, Fujian 350108, China.
| | - Haixing Shi
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian Academy, University of Chinese Academy of Sciences, Fuzhou, Fujian 350108, China.
- Fujian Agriculture and Forestry University Fuzhou, Fuzhou, Fujian 350002, China
| | - Yaqi Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian Academy, University of Chinese Academy of Sciences, Fuzhou, Fujian 350108, China.
- Fujian Agriculture and Forestry University Fuzhou, Fuzhou, Fujian 350002, China
| | - Wenzhen Liu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian Academy, University of Chinese Academy of Sciences, Fuzhou, Fujian 350108, China.
| | - Liangzhi Cai
- Department of Gynecology, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian, 350001, China
| | - Le Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian Academy, University of Chinese Academy of Sciences, Fuzhou, Fujian 350108, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huanhuan Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian Academy, University of Chinese Academy of Sciences, Fuzhou, Fujian 350108, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhuo Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian Academy, University of Chinese Academy of Sciences, Fuzhou, Fujian 350108, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
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3
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Younus M, Valandro S, Gobeze HB, Ahmed S, Schanze KS. Wavelength and Solvent Controlled Energy and Charge Transfer in Donor-Acceptor Substituted Platinum Acetylide Complexes. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sun N, Wen X, Zhang S. Strategies to Improve Photodynamic Therapy Efficacy of Metal-Free Semiconducting Conjugated Polymers. Int J Nanomedicine 2022; 17:247-271. [PMID: 35082494 PMCID: PMC8786367 DOI: 10.2147/ijn.s337599] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 11/23/2021] [Indexed: 01/12/2023] Open
Abstract
Photodynamic therapy (PDT) is a noninvasive therapy for cancer and bacterial infection. Metal-free semiconducting conjugated polymers (SCPS) with good stability and optical and electrical properties are promising photosensitizers (PSs) for PDT compared with traditional small-molecule PSs. This review analyzes the latest progress of strategies to improve PDT effect of linear, planar, and three-dimensional SCPS, including improving solubility, adjusting conjugated structure, enhancing PS-doped SCPs, and combining therapies. Moreover, the current issues, such as hypoxia, low penetration, targeting and biosafety of SCPS, and corresponding strategies, are discussed. Furthermore, the challenges and potential opportunities on further improvement of PDT for SCPs are presented.
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Affiliation(s)
- Na Sun
- Department of Nuclear Medicine, XinQiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Xue Wen
- School of Electronics, Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Song Zhang
- Department of Nuclear Medicine, XinQiao Hospital, Army Medical University, Chongqing, People's Republic of China
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5
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Wu W, Liu B. Modulating the optical properties and functions of organic molecules through polymerization. MATERIALS HORIZONS 2022; 9:99-111. [PMID: 34498024 DOI: 10.1039/d1mh01030a] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Organic functional materials with advanced optical properties have attracted much attention due to their broad applications, such as in light-emitting diodes, solar cells, anti-counterfeiting, photocatalysis, and even disease diagnosis and treatment. Recent research has revealed that many optical properties of organic molecules can be improved through simple polymerization. In this review, we discuss the phenomenon, mechanism, and impact of polymerization on the properties of materials, including the polymerization-induced spectral shift, polymerization-enhanced photosensitization, polymerization-enhanced two-photon absorption, polymerization-enhanced photocatalytic efficiency, polymerization-induced room temperature phosphorescence, polymerization-induced thermally activated delayed fluorescence, and polymerization-induced emission using specific examples with different applications. The new opportunities arising from polymerization in designing high performance optical materials are summarized in the future perspective.
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Affiliation(s)
- Wenbo Wu
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin 300072, China.
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore.
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
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Holt ED, Wang J, Winkel RW, Younus M, Schanze KS. Photophysics and solar cell application of a benzodithiophene conjugated polymer containing cyclometalated platinum units. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2021. [DOI: 10.1016/j.jpap.2021.100060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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Pham TC, Nguyen VN, Choi Y, Lee S, Yoon J. Recent Strategies to Develop Innovative Photosensitizers for Enhanced Photodynamic Therapy. Chem Rev 2021; 121:13454-13619. [PMID: 34582186 DOI: 10.1021/acs.chemrev.1c00381] [Citation(s) in RCA: 588] [Impact Index Per Article: 196.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review presents a robust strategy to design photosensitizers (PSs) for various species. Photodynamic therapy (PDT) is a photochemical-based treatment approach that involves the use of light combined with a light-activated chemical, referred to as a PS. Attractively, PDT is one of the alternatives to conventional cancer treatment due to its noninvasive nature, high cure rates, and low side effects. PSs play an important factor in photoinduced reactive oxygen species (ROS) generation. Although the concept of photosensitizer-based photodynamic therapy has been widely adopted for clinical trials and bioimaging, until now, to our surprise, there has been no relevant review article on rational designs of organic PSs for PDT. Furthermore, most of published review articles in PDT focused on nanomaterials and nanotechnology based on traditional PSs. Therefore, this review aimed at reporting recent strategies to develop innovative organic photosensitizers for enhanced photodynamic therapy, with each example described in detail instead of providing only a general overview, as is typically done in previous reviews of PDT, to provide intuitive, vivid, and specific insights to the readers.
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Affiliation(s)
- Thanh Chung Pham
- Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, Korea
| | - Van-Nghia Nguyen
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Korea
| | - Yeonghwan Choi
- Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, Korea
| | - Songyi Lee
- Department of Chemistry, Pukyong National University, Busan 48513, Korea.,Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, Korea
| | - Juyoung Yoon
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Korea
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8
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Heterometal Grafted Metalla-ynes and Poly(metalla-ynes): A Review on Structure-Property Relationships and Applications. Polymers (Basel) 2021; 13:polym13213654. [PMID: 34771211 PMCID: PMC8588132 DOI: 10.3390/polym13213654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/04/2021] [Accepted: 10/20/2021] [Indexed: 11/16/2022] Open
Abstract
Metalla-ynes and poly(metalla-ynes) have emerged as unique molecular scaffolds with fascinating structural features and intriguing photo-luminescence (PL) properties. Their rigid-rod conducting backbone with tunable photo-physical properties has generated immense research interests for the design and development of application-oriented functional materials. Introducing a second d- or f-block metal fragment in the main-chain or side-chain of a metalla-yne and poly(metalla-yne) was found to further modulate the underlying features/properties. This review focuses on the photo-physical properties and opto-electronic (O-E) applications of heterometal grafted metalla-ynes and poly(metalla-ynes).
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9
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Synthesis, structure and photophysical properties of mono- and di-nuclear platinum(II) acetylide complexes. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Meng FL, Qian HL, Yan XP. Conjugation-regulating synthesis of high photosensitizing activity porphyrin-based covalent organic frameworks for photodynamic inactivation of bacteria. Talanta 2021; 233:122536. [PMID: 34215039 DOI: 10.1016/j.talanta.2021.122536] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 05/11/2021] [Accepted: 05/15/2021] [Indexed: 12/20/2022]
Abstract
Preparation of porphyrin-based covalent organic frameworks (Por-COFs) with high photosensitizing activity for photodynamic inactivation of bacteria is of great challenge, but significant for economy and human health. Herein, we show a conjugation-regulating strategy to design and synthesize Por-COFs with high photosensitizing activity for the photodynamic inactivation of bacteria. Terephthalaldehyde (Da), 2,5-Dihydroxyterephthalaldehyde (Dha), and 2,5-Diethoxyterephthalaldehyde (Deta) with different conjugation degrees are selected to condense with 5,10,15,20-Tetrakis(4-aminophenyl)porphyrin (Tph) to synthesize COF-366, DhaTph, and JNU-2, respectively. The higher conjugation of Dha and Deta than Da leads to the higher conjugation of DhaTph and JNU-2, respectively. Moreover, the hydroxyl group in Dha and the ethoxy group in Deta further expand the conjugation of DhaTph and JNU-2 via the formation of intralayer extended π-cloud delocalization and p-π conjunction, respectively. The extension of conjugation for DhaTph and JNU-2 results in the increase of intersystem crossing process and significantly improves their photosensitizing activity. Furthermore, JNU-2 with the highest photosensitizing activity exhibits superior antibacterial effects toward Staphylococcus aureus (99.1%) and Escherichia coli (96.8%). This study offers a new conjugation-regulating strategy for designing high photosensitizing activity of Por-COFs for the inactivation of bacteria.
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Affiliation(s)
- Fan-Lin Meng
- Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Hai-Long Qian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China; Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
| | - Xiu-Ping Yan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China; Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
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11
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Lai W, Chen Z, Ye S, Xu Y, Xie G, Kuang C, Li Y, Zheng L, Wei L. BiVO 4 prepared by the sol-gel doped on graphite felt cathode for ciprofloxacin degradation and mechanism in solar-photo-electro-Fenton. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124621. [PMID: 33383458 DOI: 10.1016/j.jhazmat.2020.124621] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/06/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
In this research, bismuth vanadate-doped graphite felt (GF-BiVO4) was successfully prepared by sol-gel method, in which BiVO4 owned superior electro-Fenton (EF) and solar-photo-electro-Fenton (SPEF) performance. Combined with the analysis by X-ray diffractometer (XRD), field emission transmission electron microscopy (FE-TEM), nitrogen adsorption-desorption isotherms and cyclic voltammetry (CV), the changes of electrodes were reflected in structure and physicochemical properties. The doping of monoclinic BiVO4 endued GF with a higher surface area and more electro-active sites and better electrode activity in comparison to Raw-GF. Then, the GFs were used as cathodes to detect •OH concentration with coumarin (COU) as probe molecule and to evaluate photoelectric performance with ciprofloxacin (CIP) in photocatalysis, EF and SPEF processes. The results demonstrated that the concentration of •OH followed an order of SPEF> EF> photocatalysis, which was consistent with the removal rate of CIP (99.8%, 99.4% and 21.2%, respectively) on GF-BiVO4 at 5 min. Further, five degradation pathways of CIP in SPEF system were proposed including the attack on piperazine ring, oxidation on cyclopropyl group, decarboxylation and hydroxyl radical addition, oxidation on benzene group and defluorination. The study provides insights into the enhancement of EF and SPEF performance and the degradation pathway of CIP in SPEF.
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Affiliation(s)
- Weikang Lai
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Zhuoyao Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Shengjun Ye
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Yanbin Xu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
| | - Guangyan Xie
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Chaozhi Kuang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Yuxin Li
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Li Zheng
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Longmeng Wei
- Analysis and Test Center, Guangdong University of Technology, Guangzhou 510006, China
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12
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Köse ME, Schanze KS. Prediction of Internal Reorganization Energy in Photoinduced Electron Transfer Processes of Molecular Dyads. J Phys Chem A 2020; 124:9478-9486. [PMID: 33141580 DOI: 10.1021/acs.jpca.0c09533] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel theoretical methodology is proposed to estimate the magnitude of internal reorganization energy for electron transfer and charge recombination processes in donor-bridge-acceptor (D-B-A) type molecular dyads. The potential energy surface for each process is plotted for the shortest path by assuming a displaced but slightly distorted harmonic oscillator model. Structural changes occurring upon photoexcitation and ionization were exploited to calculate the activation energies needed for electron transfer reactions with the aid of involved vibrational modes. D-B-A dyads consisting of octathiophene (T8) paired with three (di)imide acceptors (naphthalene diimide (NDI), benzene diimide (BDI), and naphthalimide (NI)) were studied as model systems for theoretical calculations. It has been found that T8NDI and T8BDI possess very low activation energies for both forward electron transfer and charge recombination, and hence the rates for relevant processes should be very rapid. In contrast, the activation energies for such processes for T8NI were found to be relatively large, and free energy estimations predict that the charge recombination mechanism in T8NI falls into the inverted regime of Marcus semiclassical electron transfer theory. All of the calculated properties of the dyads are in very good agreement with the available experimental data, suggesting the suitability of the proposed theoretical approach in revealing the photoinduced electron transfer mechanisms of molecular dyads.
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Affiliation(s)
| | - Kirk S Schanze
- Department of Chemistry, University of Texas at San Antonio, One UTSA Way, San Antonio, Texas 78249, United States
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Gundogan AS, Jagadesan P, Schanze KS. Photophysics of Oligothiophenes End‐Capped with Platinum(II) Auxochromes. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ali S. Gundogan
- Department of Chemistry University of Texas at San Antonio San Antonio 78249, TX United States
| | - Pradeepkumar Jagadesan
- Department of Chemistry University of Texas at San Antonio San Antonio 78249, TX United States
| | - Kirk S. Schanze
- Department of Chemistry University of Texas at San Antonio San Antonio 78249, TX United States
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Juvenal F, Lei H, Karsenti PL, Harvey PD. Drastic effect of the substituent on the anthraquinone diimine moiety on the properties of the push-pull trans-bisphosphinebisphenylacetynylplatinum(II)-containing polymers. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.05.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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15
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Wan T, Yin X, Pan C, Liu D, Zhou X, Gao C, Wong WY, Wang L. Boosting the Adhesivity of π-Conjugated Polymers by Embedding Platinum Acetylides towards High-Performance Thermoelectric Composites. Polymers (Basel) 2019; 11:polym11040593. [PMID: 30960577 PMCID: PMC6523095 DOI: 10.3390/polym11040593] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/19/2019] [Accepted: 03/22/2019] [Indexed: 11/16/2022] Open
Abstract
Single-walled carbon nanotubes (SWCNTs) incorporated with π-conjugated polymers, have proven to be an effective approach in the production of advanced thermoelectric composites. However, the studied polymers are mainly limited to scanty conventional conductive polymers, and their performances still remain to be improved. Herein, a new planar moiety of platinum acetylide in the π-conjugated system is introduced to enhance the intermolecular interaction with the SWCNTs via π–π and d–π interactions, which is crucial in regulating the thermoelectric performances of SWCNT-based composites. As expected, SWCNT composites based on the platinum acetylides embedded polymers displayed a higher power factor (130.7 ± 3.8 μW·m−1·K−2) at ambient temperature than those without platinum acetylides (59.5 ± 0.7 μW·m−1·K−2) under the same conditions. Moreover, the strong interactions between the platinum acetylide-based polymers and the SWCNTs are confirmed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) measurements.
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Affiliation(s)
- Tao Wan
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Xiaojun Yin
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Chengjun Pan
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Danqing Liu
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Xiaoyan Zhou
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Chunmei Gao
- College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Wai-Yeung Wong
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Lei Wang
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
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Ahmed MK, Rahman MM, Naher M, Mehdi SS, Khan AR, Khan MMR, Islam SMS, Younus M, Wedler S, Bagnich S, Hofmann A, Rudnick A, Köhler A. A New Series of Conjugated Platinum‐
co
‐Poly(
p
‐phenylenebutadiynylene)s Polymers: Syntheses and Photophysical Properties. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201800494] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Md. Kausar Ahmed
- Department of ChemistryShahjalal University of Science and Technology Sylhet ‐3114 Bangladesh
| | - Md. Mostafizur Rahman
- Department of ChemistryShahjalal University of Science and Technology Sylhet ‐3114 Bangladesh
| | - Masnun Naher
- Department of ChemistryShahjalal University of Science and Technology Sylhet ‐3114 Bangladesh
| | - Shawon Shawrier Mehdi
- Department of ChemistryShahjalal University of Science and Technology Sylhet ‐3114 Bangladesh
| | - Atiqur Rahman Khan
- Department of ChemistryShahjalal University of Science and Technology Sylhet ‐3114 Bangladesh
| | | | - S. M. Saiful Islam
- Department of ChemistryShahjalal University of Science and Technology Sylhet ‐3114 Bangladesh
| | - Muhammad Younus
- Department of ChemistryShahjalal University of Science and Technology Sylhet ‐3114 Bangladesh
| | - Stefan Wedler
- Soft Matter Optoelectronics and Bayreuth Institute of Macromolecular ResearchUniversity of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - Sergey Bagnich
- Soft Matter Optoelectronics and Bayreuth Institute of Macromolecular ResearchUniversity of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - Anna‐Lena Hofmann
- Soft Matter Optoelectronics and Bayreuth Institute of Macromolecular ResearchUniversity of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - Alexander Rudnick
- Soft Matter Optoelectronics and Bayreuth Institute of Macromolecular ResearchUniversity of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - Anna Köhler
- Soft Matter Optoelectronics and Bayreuth Institute of Macromolecular ResearchUniversity of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
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Zhong YF, Zhang H, Mu G, Liu WT, Cao Q, Tan CP, Ji LN, Mao ZW. Nucleus-localized platinum(ii)–triphenylamine complexes as potent photodynamic anticancer agents. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00738e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The para-position coordinated platinum–triphenylamine conjugates exhibited much better PDT anticancer activity than their meta-position coordinated isomers.
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Affiliation(s)
- Yi-Fang Zhong
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou
- China
| | - Hang Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou
- China
| | - Ge Mu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou
- China
| | - Wen-Ting Liu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou
- China
| | - Qian Cao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou
- China
| | - Cai-Ping Tan
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou
- China
| | - Liang-Nian Ji
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou
- China
| | - Zong-Wan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou
- China
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18
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Beto CC, Yang Y, Zeman CJ, Ghiviriga I, Schanze KS, Veige AS. Cu-Catalyzed Azide-Pt-Acetylide Cycloaddition: Progress toward a Conjugated Metallopolymer via iClick. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00737] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Christopher C. Beto
- Department of Chemistry, Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Yajing Yang
- Department of Chemistry, Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Charles J. Zeman
- Department of Chemistry, Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Ion Ghiviriga
- Department of Chemistry, Center for Catalysis, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Kirk S. Schanze
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
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19
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Liu S, Zhang H, Li Y, Liu J, Du L, Chen M, Kwok RTK, Lam JWY, Phillips DL, Tang BZ. Strategies to Enhance the Photosensitization: Polymerization and the Donor–Acceptor Even–Odd Effect. Angew Chem Int Ed Engl 2018; 57:15189-15193. [DOI: 10.1002/anie.201810326] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Indexed: 12/30/2022]
Affiliation(s)
- Shunjie Liu
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Haoke Zhang
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Yuanyuan Li
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Junkai Liu
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Lili Du
- Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong SAR China
- Institute of Life SciencesJiangsu University Zhenjiang 212013 China
| | - Ming Chen
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Ryan T. K. Kwok
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Jacky W. Y. Lam
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - David Lee Phillips
- Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong SAR China
| | - Ben Zhong Tang
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
- Center for Aggregation-Induced EmissionSCUT-HKUST Joint Research InstituteState Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology Guangzhou 510640 China
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20
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Liu S, Zhang H, Li Y, Liu J, Du L, Chen M, Kwok RTK, Lam JWY, Phillips DL, Tang BZ. Strategies to Enhance the Photosensitization: Polymerization and the Donor–Acceptor Even–Odd Effect. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810326] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Shunjie Liu
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Haoke Zhang
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Yuanyuan Li
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Junkai Liu
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Lili Du
- Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong SAR China
- Institute of Life SciencesJiangsu University Zhenjiang 212013 China
| | - Ming Chen
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Ryan T. K. Kwok
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Jacky W. Y. Lam
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - David Lee Phillips
- Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong SAR China
| | - Ben Zhong Tang
- Department of ChemistryHong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstructionInstitute for Advanced Studgy and Department of Chemical and Biological EngineeringThe Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China
- HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
- Center for Aggregation-Induced EmissionSCUT-HKUST Joint Research InstituteState Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology Guangzhou 510640 China
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21
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Haque A, Al-Balushi RA, Al-Busaidi IJ, Khan MS, Raithby PR. Rise of Conjugated Poly-ynes and Poly(Metalla-ynes): From Design Through Synthesis to Structure-Property Relationships and Applications. Chem Rev 2018; 118:8474-8597. [PMID: 30112905 DOI: 10.1021/acs.chemrev.8b00022] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Conjugated poly-ynes and poly(metalla-ynes) constitute an important class of new materials with potential application in various domains of science. The key factors responsible for the diverse usage of these materials is their intriguing and tunable chemical and photophysical properties. This review highlights fascinating advances made in the field of conjugated organic poly-ynes and poly(metalla-ynes) incorporating group 4-11 metals. This includes several important aspects of conjugated poly-ynes viz. synthetic protocols, bonding, electronic structure, nature of luminescence, structure-property relationships, diverse applications, and concluding remarks. Furthermore, we delineated the future directions and challenges in this particular area of research.
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Affiliation(s)
- Ashanul Haque
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Rayya A Al-Balushi
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Idris Juma Al-Busaidi
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Muhammad S Khan
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Paul R Raithby
- Department of Chemistry , University of Bath , Claverton Down , Bath BA2 7AY , U.K
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22
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Wang YX, Zhou QF, Chen LJ, Xu L, Wang CH, Li X, Yang HB. Facile construction of organometallic rotaxane-terminated dendrimers using neutral platinum-acetylides as the main scaffold. Chem Commun (Camb) 2018; 54:2224-2227. [PMID: 29323676 DOI: 10.1039/c7cc08729b] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present the successful construction of a new family of organometallic rotaxane-terminated dendrimers using neutral platinum-acetylides as the main scaffold. The fourth generation dendrimer has 24 rotaxane moieties on the surface termini in a monodisperse manner.
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Affiliation(s)
- Yu-Xuan Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 N. Zhongshan Road Shanghai, 200062, China.
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23
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Beto CC, Holt ED, Yang Y, Ghiviriga I, Schanze KS, Veige AS. A new synthetic route to in-chain metallopolymers via copper(i) catalyzed azide-platinum-acetylide iClick. Chem Commun (Camb) 2018; 53:9934-9937. [PMID: 28829464 DOI: 10.1039/c7cc06289c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The first example of an in-chain metallo-poly(triazolate) synthesized by CuAAC is reported. Azido-platinum-acetylide (A-M-B) monomers are catalytically polymerized with copper(i) acetate to yield 1,2,3-triazolate linked Pt(ii) units. The metallopolymers are characterized by multinuclear NMR, IR, UV/Vis, GPC, and MS.
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Affiliation(s)
- C C Beto
- University of Florida, Department of Chemistry, Center for Catalysis, P. O. Box 117200, Gainesville, FL 32611, USA.
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24
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Juvenal F, Bonnot A, Fortin D, Harvey PD. The trans-Bis( p-thioetherphenylacetynyl)bis(phosphine)platinum(II) Ligands: A Step towards Predictability and Crystal Design. ACS OMEGA 2017; 2:7433-7443. [PMID: 31457310 PMCID: PMC6645136 DOI: 10.1021/acsomega.7b01352] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 10/19/2017] [Indexed: 06/10/2023]
Abstract
Two organometallic ligands L1 (trans-[p-MeSC6H4C≡C-Pt(PR3)2-C≡CC6H4SMe; R = Me]) and L2 (R = Et) react with CuX salts (X = Cl, Br, I) in MeCN to form one-dimensional (1D) or two-dimensional (2D) coordination polymers (CPs). The clusters formed with copper halide can either be step cubane Cu4I4, rhomboids Cu2X2, or simply CuI. The formed CPs with L1, which is less sterically demanding than L2, exhibit a crystallization solvent molecule (MeCN), whereas those formed with L2 do not incorporate MeCN molecules in the lattice. These CPs were characterized by X-ray crystallography, thermogravimetric analysis, IR, Raman, absorption, and emission spectra as well as photophysical measurements in the presence and absence of crystallization MeCN molecules for those CPs with the solvent in the lattice (i.e., [(Cu4I4)L1·MeCN] n (CP1), [(Cu2Br2)L1·2MeCN] n (CP3), and [(Cu2Cl2)L1·MeCN] n (CP5)). The crystallization molecules were removed under vacuum to evaluate the porosity of the materials by Brunauer-Emmett-Teller (N2 at 77 K). The 2D CP shows a reversible type 1 adsorption isotherm for both CO2 and N2, indicative of microporosity, whereas the 1D CPs do not capture more solvent molecules or CO2.
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25
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Du L, Xiong W, Cheng SC, Shi H, Chan WK, Phillips DL. Direct Observation of an Efficient Triplet Exciton Diffusion Process in a Platinum-Containing Conjugated Polymer. J Phys Chem Lett 2017; 8:2475-2479. [PMID: 28514159 DOI: 10.1021/acs.jpclett.7b00942] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report the synthesis and characterization of a conjugated polymer incorporated with cyclometalated platinum complexes on the main chain. The polymer may serve as an efficient triplet sensitizer in light-harvesting systems. The photophysical properties of the polymer were studied by nanosecond and femtosecond time-resolved transient absorption spectroscopies. After excitation, an energy-transfer process from the thiophene units on the conjugated main chain to the singlet excited state of the Pt complex moieties occurred in less than 150 fs. The subsequent intersystem crossing process resulted in the formation of a triplet excited state at the Pt complex moieties in ∼3.2 ps, which was then followed by an efficient triplet diffusion process that led to the formation of triplet excitons on the polymer main chain in ∼283 ps. This proposed efficient triplet sensitized polymer system not only enhances the exciton diffusion length but also reduces energy loss in the process, which displays remarkable implications in the design of novel materials for triplet sensitized solar cells.
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Affiliation(s)
- Lili Du
- Institute of Molecular Functional Materials (Areas of Excellence Scheme, University Grants Committee, Hong Kong) and Department of Chemistry, The University of Hong Kong , Hong Kong S.A.R., China
| | - Wenjuan Xiong
- Institute of Molecular Functional Materials (Areas of Excellence Scheme, University Grants Committee, Hong Kong) and Department of Chemistry, The University of Hong Kong , Hong Kong S.A.R., China
| | - Shun-Cheung Cheng
- Institute of Molecular Functional Materials (Areas of Excellence Scheme, University Grants Committee, Hong Kong) and Department of Chemistry, The University of Hong Kong , Hong Kong S.A.R., China
| | - Haiting Shi
- Institute of Molecular Functional Materials (Areas of Excellence Scheme, University Grants Committee, Hong Kong) and Department of Chemistry, The University of Hong Kong , Hong Kong S.A.R., China
| | - Wai Kin Chan
- Institute of Molecular Functional Materials (Areas of Excellence Scheme, University Grants Committee, Hong Kong) and Department of Chemistry, The University of Hong Kong , Hong Kong S.A.R., China
| | - David Lee Phillips
- Institute of Molecular Functional Materials (Areas of Excellence Scheme, University Grants Committee, Hong Kong) and Department of Chemistry, The University of Hong Kong , Hong Kong S.A.R., China
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