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Choroba K, Penkala M, Palion-Gazda J, Malicka E, Machura B. Pyrenyl-Substituted Imidazo[4,5- f][1,10]phenanthroline Rhenium(I) Complexes with Record-High Triplet Excited-State Lifetimes at Room Temperature: Steric Control of Photoinduced Processes in Bichromophoric Systems. Inorg Chem 2023; 62:19256-19269. [PMID: 37950694 PMCID: PMC10685448 DOI: 10.1021/acs.inorgchem.3c02662] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 10/25/2023] [Accepted: 10/27/2023] [Indexed: 11/13/2023]
Abstract
Photochemical applications based on intermolecular photoinduced energy triplet state transfer require photosensitizers with strong visible absorptivity and extended triplet excited-state lifetimes. Using a bichromophore approach, two Re(I) tricarbonyl complexes with 2-(1-pyrenyl)-1H-imidazo[4,5-f][1,10]phenanthroline (pyr-imphen) and 1-(4-(methyl)phenyl)-2-(1-pyrenyl)-imidazo[4,5-f][1,10]phenanthroline (pyr-tol-imphen) showing extraordinary long triplet excited states at room temperature (>1000 μs) were obtained, and their ground- and excited-state properties were thoroughly investigated by a wide range of spectroscopic methods, including femtosecond transient absorption (fs-TA). It is worth noting that the designed [ReCl(CO)3(pyr-imphen)] (1) and [ReCl(CO)3(pyr-tol-imphen)] (2) complexes form a unique pair differing in the mutual chromophore arrangement due to introduction of a 4-(methyl)phenyl substituent into the imidazole ring at the H1-position, imposing an increase in the dihedral angle between the pyrene and {ReCl(CO)3(imphen)} chromophores. The magnitude of the electronic coupling between the pyrene and {ReCl(CO)3(imphen)} chromophores was found to be an efficient tool to tune the photophysical properties of 1 and 2. The usefulness of designed Re(I) compounds as triplet photosensitizers was successfully verified by examination of their abilities for 1O2 generation and triplet-triplet annihilation upconversion. The phosphorescence lifetimes, ∼1800 μs for 1 and ∼1500 μs for 2, are the longest lifetimes reported for Re(I) diimine carbonyl complexes in solution at room temperature.
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Affiliation(s)
- Katarzyna Choroba
- Institute of Chemistry, University of Silesia, Szkolna 9, Katowice 40-006, Poland
| | - Mateusz Penkala
- Institute of Chemistry, University of Silesia, Szkolna 9, Katowice 40-006, Poland
| | - Joanna Palion-Gazda
- Institute of Chemistry, University of Silesia, Szkolna 9, Katowice 40-006, Poland
| | - Ewa Malicka
- Institute of Chemistry, University of Silesia, Szkolna 9, Katowice 40-006, Poland
| | - Barbara Machura
- Institute of Chemistry, University of Silesia, Szkolna 9, Katowice 40-006, Poland
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2
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Platinum(II) complexes of imidazophenanthroline-based polypyridine ligands as potential anticancer agents: synthesis, characterization, in vitro cytotoxicity studies and a comparative ab initio, and DFT studies with cisplatin, carboplatin, and oxaliplatin. J Biol Inorg Chem 2018; 23:833-848. [DOI: 10.1007/s00775-018-1579-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Accepted: 06/02/2018] [Indexed: 12/21/2022]
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Mondal PC, Singh V, Zharnikov M. Nanometric Assembly of Functional Terpyridyl Complexes on Transparent and Conductive Oxide Substrates: Structure, Properties, and Applications. Acc Chem Res 2017; 50:2128-2138. [PMID: 28829569 DOI: 10.1021/acs.accounts.7b00166] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Over the last few decades, molecular assemblies on solid substrates have become increasingly popular, challenging the traditional systems and materials in terms of better control over molecular structure and function at the nanoscale. A variety of such assemblies with high complexity and adjustable properties was generated on the basis of organic, inorganic, organometallic, polymeric, and biomolecular building blocks. Particular versatile elements in this context are terpyridyls due to their wide design flexibility, ease of functionalization, and ability to coordinate to a broad variety of transition-metal ions without forming diastereoisomers, which facilitates tuning of their optical and electronic properties. Specifically, metal-terpyridyl complexes are worthy building blocks for generating optoelectronically active assemblies on technologically relevant transparent and conductive oxide substrates. In this context, the present Account summarizes our recent results on the preparation, characterization, and applications of nanometric (2-10 nm) surface-confined molecular assemblies of Cu2+, Fe2+, Ru2+, and Os2+-terpyridyl complexes on SiOx-based substrates (glass, quartz, silicon, and ITO-coated glass). These assemblies rely on covalent bond formation between the iodo-/chloro-terminated functionalized SiOx substrates and the pendant group (mostly pyridyl) hosted on the terpyridyl complexes. Such an anchoring provides excellent thermal, temporal, radiative, and electrochemical stability to the assemblies as needed for technological applications. The functional, covalently assembled monolayers were extended to fabricate molecular dyads (bilayers), triads (trilayers), and oligomers by an established layer-by-layer procedure using suitable metallolinkers such as Cu2+, Ag+, and Pd2+. The chemical, optical, and electrochemical properties of these assemblies could be precisely adjusted by selection of proper metal-terpyridyl complexes and/or metallolinkers, so that the resulting systems served, relying on the specific design, as sensors, catalysts, molecular logic gates, and photochromic devices. For instance, a Cu-terpyridyl-based assembly on a glass substrate showed "turn on" detection of ascorbic acid. In another example, heterometallic molecular triads were exposed to redox-active NO+ for selective oxidation of the metal ions, and the optical readout was utilized for configuring multiple-input-based molecular logic gates. Furthermore, bias-driven (+0.6 to +1.6 V vs Ag/AgCl) optical properties of the heteroleptic Ru2+/Os2+-terpyridyl monolayers were modulated and "read out" by spectro-electrochemical techniques demonstrating high charge/information density (3-4 × 1014 electrons/cm2). Moreover, the manipulation of the M2+/3+ (M = Fe, Ru, and Os) redox wave in the assembly provided the possibility to create mixed-valence redox-states paving the way toward the fabrication of "multi-bit" memory systems. We truly believe that due to these intriguing characteristics and excellent stability, terpyridyl-based molecular assemblies have the potential to become a versatile platform for the next generation of smart optoelectronic devices.
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Affiliation(s)
- Prakash Chandra Mondal
- National Institute for Nanotechnology, University of Alberta, Edmonton, Alberta T6G 2M9, Canada
| | - Vikram Singh
- Centre
for Nanoscience and Nanotechnology, Panjab University, Chandigarh 160014, India
| | - Michael Zharnikov
- Applied
Physical Chemistry, Heidelberg University, 69120 Heidelberg, Germany
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Manojkumar Y, Ambika S, Senthilkumar R, Arunachalam S. Biophysical and biological studies of some polymer grafted metallo-intercalators. Colloids Surf B Biointerfaces 2017; 156:320-329. [PMID: 28544964 DOI: 10.1016/j.colsurfb.2017.05.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 05/08/2017] [Accepted: 05/13/2017] [Indexed: 12/21/2022]
Abstract
Two water-soluble polymer-copper(II) complexes, [Cu(ip)2(BPEI)](ClO4)2·H2O (Complex 1) and [Cu(dppz)2BPEI](ClO4)2·H2O (Complex 2) with different degree of coordination have been synthesized and characterized. The interaction between the prepared complexes and CTDNA has been assessed by various physico-chemical methods The spectroscopic and the cyclic voltammetry studies have revealed that both the complexes interact with CTDNA through intercalation binding mode. Among the two complexes, Complex 2 has higher binding affinity with CTDNA. The antiproliferative activity of the complexes has been examined on human breast cancer cells, MDAMB231, adopting various techniques. The results indicate that both the polymer-copper(II) complexes are effective against the breast cancer cell line and the order of the activity is consistent with the DNA-binding ability.
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Affiliation(s)
- Yesaiyan Manojkumar
- School of Chemistry, Bharathidasan University, Tiruchirappalli-620 024, India
| | - Subramanian Ambika
- School of Chemistry, Bharathidasan University, Tiruchirappalli-620 024, India
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Gera B, Manna AK, Chandra Mondal P. Metal-ions linked surface-confined molecular dyads of Zn-porphyrin–metallo-terpyridine: an experimental and theoretical study. RSC Adv 2017. [DOI: 10.1039/c6ra25090d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Solid state molecular engineering is performed on SiOx-substrates by combining transition metal ions and metallo-porphyrins and terpyridyl complexes.
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Affiliation(s)
- Bhawna Gera
- Department of Chemistry
- University of Delhi
- New Delhi-110007
- India
| | - Arun Kumar Manna
- Department of Materials and Interfaces
- Weizmann Institute of Science
- Rehovot
- Israel
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Zhuang X, Ma X, Xue X, Jiang Q, Song L, Dai L, Zhang C, Jin S, Yang K, Ding B, Wang PC, Liang XJ. A Photosensitizer-Loaded DNA Origami Nanosystem for Photodynamic Therapy. ACS NANO 2016; 10:3486-95. [PMID: 26950644 PMCID: PMC4837698 DOI: 10.1021/acsnano.5b07671] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Photodynamic therapy (PDT) offers an alternative for cancer treatment by using ultraviolet or visible light in the presence of a photosensitizer and molecular oxygen, which can produce highly reactive oxygen species that ultimately leading to the ablation of tumor cells by multifactorial mechanisms. However, this technique is limited by the penetration depth of incident light, the hypoxic environment of solid tumors, and the vulnerability of photobleaching reduces the efficiency of many imaging agents. In this work, we reported a cellular level dual-functional imaging and PDT nanosystem BMEPC-loaded DNA origami for photodynamic therapy with high efficiency and stable photoreactive property. The carbazole derivative BMEPC is a one- and two-photon imaging agent and photosensitizer with large two-photon absorption cross section, which can be fully excited by near-infrared light, and is also capable of destroying targets under anaerobic condition by generating reactive intermediates of Type I photodynamic reactions. However, the application of BMEPC was restricted by its poor solubility in aqueous environment and its aggregation caused quenching. We observed BMEPC-loaded DNA origami effectively reduced the photobleaching of BMEPC within cells. Upon binding to DNA origami, the intramolecular rotation of BMEPC became proper restricted, which intensify fluorescence emission and radicals production when being excited. After the BMEPC-loaded DNA origami are taken up by tumor cells, upon irradiation, BMEPC could generate free radicals and be released due to DNA photocleavage as well as the following partially degradation. Apoptosis was then induced by the generation of free radicals. This functional nanosystem provides an insight into the design of photosensitizer-loaded DNA origami for effective intracellular imaging and photodynamic therapy.
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Affiliation(s)
- Xiaoxi Zhuang
- Laboratory of Controllable Nanopharmaceuticals, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Xiaowei Ma
- Laboratory of Controllable Nanopharmaceuticals, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
- Corresponding Authors: .
| | - Xiangdong Xue
- Laboratory of Controllable Nanopharmaceuticals, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Qiao Jiang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Linlin Song
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Luru Dai
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Chunqiu Zhang
- Laboratory of Controllable Nanopharmaceuticals, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Shubin Jin
- Laboratory of Controllable Nanopharmaceuticals, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Keni Yang
- Laboratory of Controllable Nanopharmaceuticals, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Baoquan Ding
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Paul C. Wang
- Fu Jen Catholic University, Taipei 24205, Taiwan
- Laboratory of Molecular Imaging, Department of Radiology, Howard University, Washington, DC 20060, United States
| | - Xing-Jie Liang
- Laboratory of Controllable Nanopharmaceuticals, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
- Corresponding Authors: .
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Mondal PC, Manna AK. Synthesis of heteroleptic terpyridyl complexes of Fe(ii) and Ru(ii): optical and electrochemical studies. NEW J CHEM 2016. [DOI: 10.1039/c5nj03106k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Heteroleptic terpyridyl complexes of Fe(ii) and Ru(ii) are synthesized. They are characterized using complimentary techniques and their optical and electrochemical properties are studied. A detailed computational study was also performed.
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Affiliation(s)
| | - Arun Kumar Manna
- Department of Materials and Interfaces
- Weizmann Institute of Science
- Rehovot-7610001
- Israel
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Vilvamani N, Chhatwal M, Bhowmick I, Gupta RD, Awasthi SK. Gold nanocomposite assemblies using functionalized Ru(ii)-polypyridyl complexes. RSC Adv 2016. [DOI: 10.1039/c6ra11516k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ru(ii)-polypyridyl complexes with various surface anchoring functional groups were prepared and utilized as capping and engineering agents to attain surface functionalized gold nanocomposites (Au NCs) with unique morphologies.
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Affiliation(s)
| | - Megha Chhatwal
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
| | - Indrani Bhowmick
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
| | - Rinkoo Devi Gupta
- Faculty of Life Sciences and Biotechnology
- South Asian University
- New Delhi-110021
- India
| | - Satish Kumar Awasthi
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
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Singh V, Sharma K, Shankar B, Awasthi SK, Gupta RD. Heteroleptic Cu(ii)–polypyridyl complexes as photonucleases. NEW J CHEM 2016. [DOI: 10.1039/c6nj00409a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four new copper(ii)–polypyridyl complexes having tail groups with increasing aromaticity, hydrophobicity and planarity are synthesized. These complexes are found to be avid DNA binders and show efficient nuclease activity under either chemical stimulus or UV-A light irradiation.
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Affiliation(s)
- V. Singh
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
- Department of Chemical Engineering
| | - K. Sharma
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
| | - B. Shankar
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
| | - S. K. Awasthi
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
| | - R. D. Gupta
- Faculty of Life Sciences and Biotechnology
- South Asian University
- Delhi-110 021
- India
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Mondal PC, Singh V, Jeyachandran YL, Zharnikov M. Surface-confined heterometallic triads on the basis of terpyridyl complexes and design of molecular logic gates. ACS APPLIED MATERIALS & INTERFACES 2015; 7:8677-8686. [PMID: 25853640 DOI: 10.1021/acsami.5b00953] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Surface-confined heterometallic molecular triads (SURHMTs) were fabricated on SiOx-based solid substrates using optically rich and redox-active Fe-, Os-, and Ru-based terpyridyl complexes as metalloligands and Cu(2+) ions as linkers. Optical and electrochemical studies reveal efficient electronic intramolecular communication in these assemblies. The UV-vis spectra of the triads exhibit a superposition of the metal-to-ligand charge-transfer bands of individual complexes, providing a significant enlargement of the optical window, useful for application. Similarly, cyclic voltammograms of SURHMT layers show a variety of redox peaks corresponding to individual complexes as well as multi-redox states at a low potential. Interaction of a representative SURHMT assembly with redox-active NOBF4 was investigated and used as a basis for configuring molecular logic gates.
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Affiliation(s)
- Prakash Chandra Mondal
- †Department of Chemistry, University of Delhi, Delhi 110007, India
- ‡Department of Chemical Physics, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Vikram Singh
- †Department of Chemistry, University of Delhi, Delhi 110007, India
| | | | - Michael Zharnikov
- §Applied Physical Chemistry, Heidelberg University, Heidelberg 69120, Germany
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Vilvamani N, Gupta RD, Awasthi SK. Ru(ii)–polypyridyl complex-grafted silica nanohybrids: versatile hybrid materials for Raman spectroscopy and photocatalysis. RSC Adv 2015. [DOI: 10.1039/c4ra14202k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ru(ii)–polypyridyl complex-grafted silica nanohybrids were prepared with and without Ag NP cores, and these materials are demonstrated as substrates for plasmon-based on-resonance Raman scattering studies and as photocatalysts.
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Affiliation(s)
- Narayanasamy Vilvamani
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- New Delhi-110007
- India
| | - Rinkoo Devi Gupta
- Faculty of Life Sciences and Biotechnology
- South Asian University
- New Delhi-110021
- India
| | - Satish Kumar Awasthi
- Chemical Biology Laboratory
- Department of Chemistry
- University of Delhi
- New Delhi-110007
- India
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Mondal PC. Optical and electrochemical properties of covalent assembled bis(4′-carboxylic phenyl terpyridyl) Ru(ii)-monolayer. NEW J CHEM 2015. [DOI: 10.1039/c5nj01421b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Monomolecular layers of Ru(ii)-4′carboxylicphenyl-terpyridyl complex are prepared on glass and ITO-coated glass substrates. The optical, electrochemical and stability studies indicate that the present system is highly robust.
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Zheng YC, Zheng ML, Li K, Chen S, Zhao ZS, Wang XS, Duan XM. Novel carbazole-based two-photon photosensitizer for efficient DNA photocleavage in anaerobic condition using near-infrared light. RSC Adv 2015. [DOI: 10.1039/c4ra11133h] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel carbazole derivatives are first reported as two-photon photosensitizers for DNA photodamage under near-infrared light exposure.
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Affiliation(s)
- Yong-Chao Zheng
- Laboratory of Organic NanoPhotonics and Key Laboratory of Functional Crystals and Laser Technology
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Mei-Ling Zheng
- Laboratory of Organic NanoPhotonics and Key Laboratory of Functional Crystals and Laser Technology
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Ke Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Shu Chen
- Laboratory of Organic NanoPhotonics and Key Laboratory of Functional Crystals and Laser Technology
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Zhen-Sheng Zhao
- Laboratory of Organic NanoPhotonics and Key Laboratory of Functional Crystals and Laser Technology
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Xue-Song Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Xuan-Ming Duan
- Laboratory of Organic NanoPhotonics and Key Laboratory of Functional Crystals and Laser Technology
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
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