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Shinozaki Y, Uragami C, Hashimoto H, Tamiaki H. A Synthetic Chlorophyll Dimer Appending Fullerene: Effect of Chlorophyll Pairing on (Photo)redox Properties. Chemistry 2020; 26:8897-8906. [DOI: 10.1002/chem.202000614] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/12/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Yoshinao Shinozaki
- Graduate School of Life SciencesRitsumeikan University Noji-higashi 1-1-1, Kusatsu Shiga 525-8577 Japan
| | - Chiasa Uragami
- School of Science and TechnologyKwansei Gakuin University Gakuen 2-1 Sanda Hyogo 669-1337 Japan
| | - Hideki Hashimoto
- School of Science and TechnologyKwansei Gakuin University Gakuen 2-1 Sanda Hyogo 669-1337 Japan
| | - Hitoshi Tamiaki
- Graduate School of Life SciencesRitsumeikan University Noji-higashi 1-1-1, Kusatsu Shiga 525-8577 Japan
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2
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Shen Y, Wang FQ, Liu J, Wang Q. A C 20-based 3D carbon allotrope with high thermal conductivity. Phys Chem Chem Phys 2019; 22:306-312. [PMID: 31813946 DOI: 10.1039/c9cp02202c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Stimulated by the high thermal conductivity of diamond together with the light mass and rich resources of carbon, a great deal of effort has been devoted to the study of the thermal conductivity of carbon-based materials. In this work, we systematically study the thermal transport properties of a three dimensional (3D) C20 fullerene-assembled carbon allotrope, HSP3-C34, in which all carbon atoms are in sp3 hybridization. The stability of HSP3-C34 is confirmed and its thermal conductivity is obtained by using first principles calculations combined with solving the linearized phonon Boltzmann transport equation. At room temperature, the thermal conductivity of HSP3-C34 is 731 W m-1 K-1, which is larger than those of many 3D carbon allotropes, such as BCO-C16 (452 W m-1 K-1), 3D graphene (150 W m-1 K-1) and T-carbon (33 W m-1 K-1). A detailed analysis of its phonons reveals that three acoustic branches are the main heat carriers at room temperature, and the optical branches gradually become important with increasing temperature. A further study on the harmonic and anharmonic properties of HSP3-C34 uncovers that the main reasons for the high thermal conductivity are the weak anharmonicity and large group velocity resulting from the strong sp3 bonding. This study provides new insights on searching for carbon allotropes with high thermal conductivity.
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Affiliation(s)
- Yupeng Shen
- Center for Applied Physics and Technology, Department of Materials Science and Engineering, HEDPS, BKL-MEMD, College of Engineering, Peking University, Beijing 100871, China.
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Tamiaki H, Tanaka T, Wang XF. Photophysical properties of synthetic monomer, dimer, trimer, and tetramer of chlorophyll derivatives and their application to organic solar cells. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2015.05.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Plehn T, Megow J, May V. Concerted charge and energy transfer processes in a highly flexible fullerene-dye system: a mixed quantum-classical study. Phys Chem Chem Phys 2015; 16:12949-58. [PMID: 24852441 DOI: 10.1039/c4cp01081g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Photoinduced excitation energy transfer and accompanying charge separation are elucidated for a supramolecular system of a single fullerene covalently linked to six pyropheophorbide-a dye molecules. Molecular dynamics simulations are performed to gain an atomistic picture of the architecture and the surrounding solvent. Excitation energy transfer among the dye molecules and electron transfer from the excited dyes to the fullerene are described by a mixed quantum-classical version of the Förster rate and the semiclassical Marcus rate, respectively. The mean characteristic time of energy redistribution lies in the range of 10 ps, while electron transfer proceeds within 150 ps. In between, on a 20 to 50 ps time-scale, conformational changes take place in the system. This temporal hierarchy of processes guarantees efficient charge separation, if the structure is exposed to a solvent. The fast energy transfer can adopt the dye excitation to the actual conformation. In this sense, the probability to achieve charge separation is large enough since any dominance of unfavorable conformations that exhibit a large dye-fullerene distance is circumvented. And the slow electron transfer may realize an averaging with respect to different conformations. To confirm the reliability of our computations, ensemble measurements on the charge separation dynamics are simulated and a very good agreement with the experimental data is obtained.
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Affiliation(s)
- Thomas Plehn
- Institut für Physik, Humboldt Universität zu Berlin, Newtonstraße 15, D-12489 Berlin, Germany.
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Nierengarten I, Nierengarten JF. The impact of copper-catalyzed alkyne-azide 1,3-dipolar cycloaddition in fullerene chemistry. CHEM REC 2014; 15:31-51. [PMID: 25392909 DOI: 10.1002/tcr.201402081] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Indexed: 12/13/2022]
Abstract
Click reactions largely cross the borders of organic synthetic chemistry and are now at the forefront of many interdisciplinary studies at the interfaces between chemistry, physics, and biology. As part of this research, our group is involved in a program on the development of clickable fullerene building blocks and their application in the preparation of a large variety of new advanced materials and bioactive compounds. Importantly, the introduction of the click chemistry concept in fullerene chemistry allowed us to produce compounds that would barely be accessible by using the classical tools of fullerene chemistry. This is particularly the case for the conjugation of fullerenes with other carbon nanoforms, such as carbon nanohorns and graphene. It is also the case for most of the sophisticated molecular ensembles constructed from clickable fullerene hexa-adduct building blocks. In this paper, we have summarized our ongoing progress in this particular field.
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Affiliation(s)
- Iwona Nierengarten
- Laboratoire de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (UMR 7509), Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 rue Becquerel, 67087, Strasbourg Cedex 2, France
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Luo J, Wang Y, Ren R, Sun W, Shen Z. Designed magnetic multilayer thin films fabricated via the layer-by-layer assembly of polycyanofullerenes. J Appl Polym Sci 2014. [DOI: 10.1002/app.40681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jin Luo
- Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Yanhua Wang
- Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Rong Ren
- Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Weilin Sun
- Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Zhiquan Shen
- Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
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Megow J, Plehn T, Steffen R, Röder B, May V. Photoinduced excitation energy transfer in hexapyropheophorbide a. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.08.076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Qaiser D, Khan MS, Singh RD, Khan ZH. Time resolved spectroscopy and gain studies of Fullerenes C60 and C70. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 113:400-407. [PMID: 23747380 DOI: 10.1016/j.saa.2013.04.085] [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: 12/01/2012] [Revised: 04/13/2013] [Accepted: 04/24/2013] [Indexed: 06/02/2023]
Abstract
The fluorescence decay time of Fullerenes C60 and C70 in pure form as well as in mixture with Coumarin C440 and Quinizarine dyes are studied. Results indicate that the decay of pure fullerenes is constant throughout the solute concentration and it is also independent of excitation wavelength, whereas in the case of mixture with dyes different behavior is noticed. We have also calculated the Stern-Volmer quenching constant and optical gain of both the fullerenes from which it is found that the optical gain is positive for Fullerene C70 only in a very narrow range of concentration.
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Affiliation(s)
- Darakhshan Qaiser
- Department of Physics, Jamia Millia Islamia, New Delhi 110 025, India.
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Bakkialakshmi S, Selvarani P, Chenthamarai S. Fluorescence quenching of Rhodamine B base by two amines. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 105:557-562. [PMID: 23353689 DOI: 10.1016/j.saa.2012.11.091] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2012] [Revised: 11/19/2012] [Accepted: 11/27/2012] [Indexed: 06/01/2023]
Abstract
Fluorescence quenching of Rhodamine B base (RhB) in DMF solution has been studied at different concentrations of the amine Triethyl amine (TEA) and n-butyl amine (NBA) at room temperature. It has been observed that the fluorescence intensity of RhB decrease with increase in the concentration of the TEA and NBA. It has been observed that the quenching due to amines proceeds via dynamic quenching process. The rate constants for the quenching process have been calculated using Stern-Volmer equation. Time resolved fluorescence study and (1)H NMR spectral study have also been carried out and discussed.
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Affiliation(s)
- S Bakkialakshmi
- Department of Physics, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India.
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Han J, Zhuo Y, Chai Y, Yuan R, Xiang Y, Zhu Q, Liao N. Multi-labeled functionalized C₆₀ nanohybrid as tracing tag for ultrasensitive electrochemical aptasensing. Biosens Bioelectron 2013; 46:74-9. [PMID: 23506946 DOI: 10.1016/j.bios.2013.02.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Revised: 01/25/2013] [Accepted: 02/12/2013] [Indexed: 10/27/2022]
Abstract
This work reports a new supramolecular method for the synthesis of the amino and thiol groups functionalized C₆₀ nanoparticles (FC60NPs) with the large surface active sites and good water solubility. First, Prussian blue carried gold nanoparticles were decorated onto the surface of the obtained FC₆₀NPs (abbreviated as Au@PB/FC₆₀). Subsequently, the Au@PB/FC₆₀ was labeled by detection aptamers and alkaline phosphatase to act as tracer. On the other hand, onion-like mesoporous graphene sheets and gold nanoparticles were utilized as the biosensor platform to immobilize a large amount of capture aptamers, owing to theirs porous structure and high surface-to-volume ratio. Based on the sandwich format, a dual signal amplification strategy based on multi-labeled functionalized C₆₀ nanohybrid as tracing tag has been successfully developed for platelet-derived growth factor B-chain electrochemical detection with a wide linear response in the range of 0.002-40 nM and a limit of detection of 0.6 pM (S/N=3). The proposed aptasensor demonstrated good specificity and high sensitivity, implying potential applications in bioanalysis and biomedicine.
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Affiliation(s)
- Jing Han
- Education Ministry Key Laboratory on Luminescence and Real-Time Analysis, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
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Gunderson VL, Smeigh AL, Kim CH, Co DT, Wasielewski MR. Electron transfer within self-assembling cyclic tetramers using chlorophyll-based donor-acceptor building blocks. J Am Chem Soc 2012; 134:4363-72. [PMID: 22329812 DOI: 10.1021/ja211329k] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The synthesis and photoinduced charge transfer properties of a series of Chl-based donor-acceptor triad building blocks that self-assemble into cyclic tetramers are reported. Chlorophyll a was converted into zinc methyl 3-ethylpyrochlorophyllide a (Chl) and then further modified at its 20-position to covalently attach a pyromellitimide (PI) acceptor bearing a pyridine ligand and one or two naphthalene-1,8:4,5-bis(dicarboximide) (NDI) secondary electron acceptors to give Chl-PI-NDI and Chl-PI-NDI(2). The pyridine ligand within each ambident triad enables intermolecular Chl metal-ligand coordination in dry toluene, which results in the formation of cyclic tetramers in solution, as determined using small- and wide-angle X-ray scattering at a synchrotron source. Femtosecond and nanosecond transient absorption spectroscopy of the monomers in toluene-1% pyridine and the cyclic tetramers in toluene shows that the selective photoexcitation of Chl results in intramolecular electron transfer from (1*)Chl to PI to form Chl(+•)-PI(-•)-NDI and Chl(+•)-PI(-•)-NDI(2). This initial charge separation is followed by a rapid charge shift from PI(-•) to NDI and subsequent charge recombination of Chl(+•)-PI-NDI(-•) and Chl(+•)-PI-(NDI)NDI(-•) on a 5-30 ns time scale. Charge recombination in the Chl-PI-NDI(2) cyclic tetramer (τ(CR) = 30 ± 1 ns in toluene) is slower by a factor of 3 relative to the monomeric building blocks (τ(CR) = 10 ± 1 ns in toluene-1% pyridine). This indicates that the self-assembly of these building blocks into the cyclic tetramers alters their structures in a way that lengthens their charge separation lifetimes, which is an advantageous strategy for artificial photosynthetic systems.
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Affiliation(s)
- Victoria L Gunderson
- Department of Chemistry and Argonne-Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, USA
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Iehl J, Nierengarten JF, Harriman A, Bura T, Ziessel R. Artificial light-harvesting arrays: electronic energy migration and trapping on a sphere and between spheres. J Am Chem Soc 2011; 134:988-98. [PMID: 22148681 DOI: 10.1021/ja206894z] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A sophisticated model of the natural light-harvesting antenna has been devised by decorating a C(60) hexa-adduct with ten yellow and two blue boron dipyrromethene (Bodipy) dyes in such a way that the dyes retain their individuality and assist solubility of the fullerene. Unusually, the fullerene core is a poor electron acceptor and does not enter into light-induced electron-transfer reactions with the appended dyes, but ineffective electronic energy transfer from the excited-state dye to the C(60) residue competes with fluorescence from the yellow dye. Intraparticle electronic energy transfer from yellow to blue dyes can be followed by steady-state and time-resolved fluorescence spectroscopy and by excitation spectra for isolated C(60) nanoparticles dissolved in dioxane at 293 K and at 77 K. The decorated particles can be loaded into polymer films by spin coating from solution. In the dried film, efficient energy transfer occurs such that photons absorbed by the yellow dye are emitted by the blue dye. Films can also be prepared to contain C(60) nanoparticles loaded with the yellow Bodipy dye but lacking the blue dye and, under these circumstances, electronic energy migration occurs between yellow dyes appended to the same nanoparticle and, at higher loading, to dye molecules on nearby particles. Doping these latter polymer films with the mixed-dye nanoparticle coalesces these multifarious processes in a single system. Thus, long-range energy migration occurs among yellow dyes attached to different particles before trapping at a blue dye. In this respect, the film resembles the natural photosynthetic light-harvesting complexes, albeit at much reduced efficacy. The decorated nanoparticles sensitize amorphous silicon photocells.
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Affiliation(s)
- Julien Iehl
- Laboratoire de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (UMR 7509), Ecole Européenne de Chimie, Polymères et Matériaux, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France
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Megiatto Junior JD, Spencer R, Schuster DI. Optimizing reaction conditions for synthesis of electron donor-[60]fullerene interlocked multiring systems. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm02154g] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Qaiser D, Khan MS, Singh RD, Khan ZH, Chawla S. Förster's resonance energy transfer between Fullerene C60 and Coumarin C440. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 77:1065-1068. [PMID: 20869302 DOI: 10.1016/j.saa.2010.08.074] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Revised: 08/09/2010] [Accepted: 08/26/2010] [Indexed: 05/29/2023]
Abstract
The interaction between Coumarin C440 with Fullerene C60 has been studied by fluorescence and time resolved spectroscopic techniques. The Coumarin C440-Fullerene C60 pair shows Forster's resonance energy transfer (FRET) from Coumarin C440 (donor) to Fullerenes C60 (acceptor). The FRET efficiency of this pair increases with the increase of the acceptor concentration. The critical energy transfer distance (R0) at which transfer efficiency is 50% is found to be 34Ǻ. Stern-Volmer plot indicates static as well as dynamic quenching. However, the FRET studies show highest efficiency at the critical stage of dimer formation.
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Affiliation(s)
- Darakhshan Qaiser
- Department of Physics, Jamia Millia Islamia, New Delhi 110025, India.
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Megiatto JD, Li K, Schuster DI, Palkar A, Herranz MÁ, Echegoyen L, Abwandner S, de Miguel G, Guldi DM. Convergent synthesis and photoinduced processes in multi-chromophoric rotaxanes. J Phys Chem B 2010; 114:14408-19. [PMID: 20518479 PMCID: PMC2964391 DOI: 10.1021/jp101154k] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of [2]rotaxane materials, in which [60]fullerene is linked to a macrocycle and ferrocene (Fc) moieties are placed at the termini of a thread, both of which possess a central Cu(I)-1,10-phenanthroline [Cu(phen)(2)](+) complex, were synthesized by self-assembly using Sauvage metal template methodology. Two types of threads were constructed, one with terminal ester linkages, and a second with terminal 1,2,3-triazole linkages derived from Cu(I)-catalyzed "click" 1,3-cycloaddition reactions. Model compounds lacking the fullerene moiety were prepared in an analogous manner. The ability of the interlocked Fc-[Cu(phen)(2)](+)-C(60) hybrids to undergo electron transfer upon photoexcitation in benzonitrile, dichloromethane, and ortho-dichlorobenzene was investigated by means of time-resolved fluorescence and transient absorption spectroscopy, using excitation wavelengths directed at the fullerene and [Cu(phen)(2)](+) subunits. The energies of the electronic excited states and charge separated (CS) states that might be formed upon photoexcitation were determined from spectroscopic and electrochemical data. These studies showed that MLCT excited states of the copper complex in the fullerenerotaxanes were quenched by electron transfer to the fullerene in benzonitrile, resulting in charge separated states with oxidized copper and reduced fullerene moieties, (Fc)(2)-[Cu(phen)(2)](2+)-C(60)(•-). Even though electron transfer from Fc to the oxidized copper complex is predicted to be exergonic by 0.16 to 0.20 eV, no unequivocal evidence in support of such a process was obtained. The conclusion that Fc plays no role in the photoinduced processes in our systems rests on the lack of enhancement of the lifetime of the charge separated state, as measured by decay of C(60)(•-) at ∼1000 nm, since one-electron oxidized Fc is very difficult to detect spectroscopically in the 500-800 nm spectral region.
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Affiliation(s)
| | - Ke Li
- Department of Chemistry, New York University, New York, NY 10003, USA
| | - David I. Schuster
- Department of Chemistry, New York University, New York, NY 10003, USA
| | - Amit Palkar
- Department of Chemistry, Clemson University, Clemson, SC 29634
| | | | - Luis Echegoyen
- Department of Chemistry, Clemson University, Clemson, SC 29634
| | - Silke Abwandner
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Gustavo de Miguel
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Dirk M. Guldi
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
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Chen K, Wacker M, Hackbarth S, Ludwig C, Langer K, Röder B. Photophysical evaluation of mTHPC-loaded HSA nanoparticles as novel PDT delivery systems. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2010; 101:340-7. [PMID: 20813540 DOI: 10.1016/j.jphotobiol.2010.08.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Revised: 07/18/2010] [Accepted: 08/04/2010] [Indexed: 11/19/2022]
Abstract
Controlled drug release is one of the main goals of recent developments in drug carrier systems. In this work human serum albumin (HSA) nanoparticles as carriers for 5-, 10-, 15-, 20-Tetrakis (3-hydroxyphenyl)-chlorin (mTHPC) were investigated. The photophysical properties of mTHPC-HSA nanoparticles in dependence of loading ratio and level of HSA cross-linking were determined. Further the drug release after uptake by Jurkat cells and in vitro singlet oxygen kinetics were examined. The loading ratio of the mTHPC-HSA nanoparticles turned out to be of major importance for the PDT relevant electronic parameters in solution. Therefore, only HSA nanoparticles with low mTHPC-loading ratio generate singlet oxygen in D(2)O. However, after cellular uptake all mTHPC-HSA samples generate singlet oxygen in Jurkat cells, but the decomposition rate depends on the level of HSA cross-linking.
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Affiliation(s)
- Kuan Chen
- Institute of Physics, Humboldt Universität zu Berlin, Newtonstraße 15, 12489 Berlin, Germany
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Dubey RK, Kumpulainen T, Efimov A, Tkachenko NV, Lemmetyinen H. Close Proximity Dibenzo[a,c]phenazine-Fullerene Dyad: Synthesis and Photoinduced Singlet Energy Transfer. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000136] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Megiatto JD, Schuster DI, Abwandner S, de Miguel G, Guldi DM. [2]Catenanes decorated with porphyrin and [60]fullerene groups: design, convergent synthesis, and photoinduced processes. J Am Chem Soc 2010; 132:3847-61. [PMID: 20196597 PMCID: PMC2862559 DOI: 10.1021/ja910149f] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A new class of [2]catenanes containing zinc(II)-porphyrin (ZnP) and/or [60]fullerene (C(60)) as appended groups has been prepared. A complete description of the convergent synthetic approach based on Cu(I) template methodology and "click" 1,3-dipolar cycloaddition chemistry is described. This new electron donor-acceptor catenane family has been subjected to extensive spectroscopic, computational, electrochemical and photophysical studies. (1)H NMR spectroscopy and computational analysis have revealed that the ZnP-C(60)-[2]catenane adopts an extended conformation with the chromophores as far as possible from each other. A detailed photophysical investigation has revealed that upon irradiation the ZnP singlet excited state initially transfers energy to the (phenanthroline)(2)-Cu(I) complex core, producing a metal-to-ligand charge transfer (MLCT) excited state, which in turn transfers an electron to the C(60) group, generating the ZnP-[Cu(phen)(2)](2+)-C(60)(*-) charge-separated state. A further charge shift from the [Cu(phen)(2)](2+) complex to the ZnP subunit, competitive with decay to the ground state, leads to the isoenergetic long distance ZnP(*+)-[Cu(phen)(2)](+)-C(60)(*-) charge-separated radical pair state, which slowly decays back to the ground state on the microsecond time scale. The slow rate of back-electron transfer indicates that in this interlocked system, as in previously studied covalently linked ZnP-C(60) hybrid materials, this process occurs in the Marcus-inverted region.
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Affiliation(s)
- Jackson D Megiatto
- Department of Chemistry, New York University, New York, New York 10003, USA.
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Megiatto JD, Spencer R, Schuster DI. Efficient One-Pot Synthesis of Rotaxanes Bearing Electron Donors and [60]Fullerene. Org Lett 2009; 11:4152-5. [DOI: 10.1021/ol9016645] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
| | - Robert Spencer
- Chemistry Department, New York University, New York City, New York 10003
| | - David I. Schuster
- Chemistry Department, New York University, New York City, New York 10003
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Novel photosensitizer-protein nanoparticles for photodynamic therapy: photophysical characterization and in vitro investigations. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2009; 96:66-74. [PMID: 19442534 DOI: 10.1016/j.jphotobiol.2009.04.006] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2008] [Revised: 04/07/2009] [Accepted: 04/14/2009] [Indexed: 11/20/2022]
Abstract
In this work two types of pheophorbide-HSA (Pheo-HSA) nanoparticles, PHSA40 and PHSA100, were prepared and their photophysical and photosensitizing properties were investigated. Due to intramolecular interactions the singlet oxygen quantum yield of PHSA40 and PHSA100 is very low (less than 0.1). Intracellular uptake and phototoxicity of pheophorbide a as well as of the Pheo-HSA nanoparticles were studied in Jurkat cells. The HSA nanoparticles do not influence the amount of dye accumulation in cells. After 24h incubation, PHSA40 and PHSA100 showed a higher phototoxicity than Pheo. The reason for this behavior is an efficient nanoparticle decomposition in the cellular lysosomes. The process of drug release during incubation of cells with Pheo-HSA nanoparticles was illustrated by fluorescence lifetime imaging (FLIM) and confocal laser scanning microscopy (CLSM). The final phototoxicity of Pheo-HSA is at the same scale as induced by free Pheo. The drug release ability of HSA nanoparticles shows the possibility to use such formulations as drug carriers in PDT treatment. Therefore, this work constructs a standard for further investigation and optimization of photosensitizer-HSA drug carrier system.
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Zhang EY, Wang CR. Fullerene self-assembly and supramolecular nanostructures. Curr Opin Colloid Interface Sci 2009. [DOI: 10.1016/j.cocis.2007.10.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Regehly M, Wang T, Siggel U, Fuhrhop JH, Röder B. Electron Transfer in Oligothiophene-Bridged Bisporphyrins. J Phys Chem B 2009; 113:2526-34. [DOI: 10.1021/jp808052u] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Martin Regehly
- Institut für Physik, Photobiophysik, Humboldt Universität, Newtonstr. 15, D-12489 Berlin, Germany; Institut für Chemie, Max-Volmer Labor, Technische Universität Berlin, Strasse des 17. Juni, D-10623 Berlin; and Institut für Chemie und Biochemie, Organische Chemie, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany
| | - Tianyu Wang
- Institut für Physik, Photobiophysik, Humboldt Universität, Newtonstr. 15, D-12489 Berlin, Germany; Institut für Chemie, Max-Volmer Labor, Technische Universität Berlin, Strasse des 17. Juni, D-10623 Berlin; and Institut für Chemie und Biochemie, Organische Chemie, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany
| | - Ulrich Siggel
- Institut für Physik, Photobiophysik, Humboldt Universität, Newtonstr. 15, D-12489 Berlin, Germany; Institut für Chemie, Max-Volmer Labor, Technische Universität Berlin, Strasse des 17. Juni, D-10623 Berlin; and Institut für Chemie und Biochemie, Organische Chemie, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany
| | - Jürgen H. Fuhrhop
- Institut für Physik, Photobiophysik, Humboldt Universität, Newtonstr. 15, D-12489 Berlin, Germany; Institut für Chemie, Max-Volmer Labor, Technische Universität Berlin, Strasse des 17. Juni, D-10623 Berlin; and Institut für Chemie und Biochemie, Organische Chemie, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany
| | - Beate Röder
- Institut für Physik, Photobiophysik, Humboldt Universität, Newtonstr. 15, D-12489 Berlin, Germany; Institut für Chemie, Max-Volmer Labor, Technische Universität Berlin, Strasse des 17. Juni, D-10623 Berlin; and Institut für Chemie und Biochemie, Organische Chemie, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany
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Muthiah C, Kee HL, Diers JR, Fan D, Ptaszek M, Bocian DF, Holten D, Lindsey JS. Synthesis and Excited-state Photodynamics of a Chlorin–Bacteriochlorin Dyad—Through-space Versus Through-bond Energy Transfer in Tetrapyrrole Arrays. Photochem Photobiol 2008; 84:786-801. [DOI: 10.1111/j.1751-1097.2007.00258.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Rancan F, Helmreich M, Mölich A, Jux N, Hirsch A, Röder B, Böhm F. Intracellular Uptake and Phototoxicity of 31,32-Didehydrophytochlorin-fullerene Hexaadducts. Photochem Photobiol 2007; 83:1330-8. [DOI: 10.1111/j.1751-1097.2007.00163.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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