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Resonance photoionization of a diarylethene derivative in the presence of cyclodextrins using multi-color multi-laser irradiation. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2015.05.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Yu T, Zeng Y, Chen J, Li YY, Yang G, Li Y. Exceptional dendrimer-based mimics of diiron hydrogenase for the photochemical production of hydrogen. Angew Chem Int Ed Engl 2013; 52:5631-5. [PMID: 23589161 DOI: 10.1002/anie.201301289] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Tianjun Yu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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3
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Yu T, Zeng Y, Chen J, Li YY, Yang G, Li Y. Exceptional Dendrimer-Based Mimics of Diiron Hydrogenase for the Photochemical Production of Hydrogen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301289] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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McLeod D, McNulty J. Mild Chemical and Biological Synthesis of Donor-Acceptor Flanked Reporter Stilbenes: Demonstration of a Physiological Wittig Olefination Reaction. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201042] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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5
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Han SC, Jin SH, Lee JW. Facile Synthesis of Aldehyde-focal Fréchet Type Dendrons and Dendrimers via Staudinger/Aza-Wittig Reactions. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.10.3624] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Cho S, Yoon MC, Lim JM, Kim P, Aratani N, Nakamura Y, Ikeda T, Osuka A, Kim D. Structural Factors Determining Photophysical Properties of Directly Linked Zinc(II) Porphyrin Dimers: Linking Position, Dihedral Angle, and Linkage Length. J Phys Chem B 2009; 113:10619-27. [DOI: 10.1021/jp904666s] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sung Cho
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea, and Department of Chemistry, Graduated School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Min-Chul Yoon
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea, and Department of Chemistry, Graduated School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Jong Min Lim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea, and Department of Chemistry, Graduated School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Pyosang Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea, and Department of Chemistry, Graduated School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Naoki Aratani
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea, and Department of Chemistry, Graduated School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Yasuyuki Nakamura
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea, and Department of Chemistry, Graduated School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Toshiaki Ikeda
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea, and Department of Chemistry, Graduated School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Atsuhiro Osuka
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea, and Department of Chemistry, Graduated School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea, and Department of Chemistry, Graduated School of Science, Kyoto University, Kyoto 606-8502, Japan
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7
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Furumi S, Otomo A, Yokoyama S, Mashiko S. Photochemical and photophysical reactions of poly(propylene imine) dendrimers tethering cinnamamide groups. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.04.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Saeki A, Seki S, Satoh N, Yamamoto K, Tagawa S. Long-Lived Hole Stabilized at a Triphenylamine Core and Shielded by Rigid Phenylazomethine Dendrons: A Pulse Radiolysis Study. J Phys Chem B 2008; 112:15540-5. [DOI: 10.1021/jp805266v] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Akinori Saeki
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan, and Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan
| | - Shu Seki
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan, and Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan
| | - Norifusa Satoh
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan, and Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan
| | - Kimihisa Yamamoto
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan, and Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan
| | - Seiichi Tagawa
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan, and Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan
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Berduque A, Scanlon MD, Collins CJ, Arrigan DWM. Electrochemistry of non-redox-active poly(propylenimine) and poly(amidoamine) dendrimers at liquid-liquid interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:7356-64. [PMID: 17516665 DOI: 10.1021/la063294w] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The electrochemistry of a series of dendrimers was examined at the interface between two immiscible electrolyte solutions (ITIES), enabling study of non-redox-active dendrimers. Different generations of poly(propylenimine) (DAB-AM-n) and poly(amidoamine) (PAMAM) dendrimers were studied. In their protonated states, the dendrimers were transferred across the ITIES, with the electrochemical behavior observed depending on the dendrimer family, the generation number, and the experimental pH. The electrochemistry of the lower generations studied was characterized by well-defined peaks for both dendrimer families and with small peak-peak separations in the case of the PAMAM family. The voltammetry of the higher generations was more complex, showing distorted voltammograms and instability of the interface. The charges of the transferring dendrimers were calculated by convolution of the voltammetric data and were similar to the theoretical charges for DAB-AM-n. For PAMAM, only the lowest generation exhibited reversible behavior, with higher generations having irreversible behavior. Using cyclic voltammetry, low micromolar concentrations of the dendrimers were detected. The results show that electrochemistry at the ITIES can be a useful method for characterization of ionizable dendrimers and that voltammetry can be a simple method for detection of low concentrations of these multicharged species.
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Affiliation(s)
- Alfonso Berduque
- Tyndall National Institute, Lee Maltings, University College, Cork, Ireland
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He Z, Ishizuka T, Jiang D. Dendritic Architectures for Design of Photo– and Spin–Functional Nanomaterials. Polym J 2007. [DOI: 10.1295/polymj.pj2007006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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11
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Chen J, Zhang L, Li S, Li YY, Chen J, Yang G, Li Y. Valence isomerization in dendrimers by photo-induced electron transfer and energy transfer from the dendrimer backbone to the core. J Photochem Photobiol A Chem 2007. [DOI: 10.1016/j.jphotochem.2006.05.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Preston AJ, Gallucci JC, Parquette JR. Structural Impact of Coordinating a Helical 2,6-Pyridyl Diamide with Divalent Metals. Org Lett 2006; 8:5259-62. [PMID: 17078692 DOI: 10.1021/ol062086s] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[Structure: see text] The structural consequences of coordinating 2,6-bis[2-((4S)-4-methyl-4,5-dihydro-1,3-oxazol-2-yl)phenyl]carbamoylpyridines, 2, with divalent metals such as Cu(II), Ni(II), and Zn(II) are reported. Metal coordination occurs under mild conditions in a manner that preserves the helical bias of the parent ligand in the solid state and in solution. 1H NMR line-shape analysis indicates that metal coordination increases the helical interconversion barrier, thus rigidifying the dynamic helicity of 2.
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Affiliation(s)
- Adam J Preston
- Department of Chemistry, The Ohio State University, Columbus, Ohio 43210, USA
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Chen J, Chen J, Li S, Zhang L, Yang G, Li Y. Conversion of Intramolecular Singlet Electron Transfer at Room Temperature into Triplet Energy Transfer at 77 K: Photoisomerization in Norbornadiene- and Carbazole-Labeled Poly(aryl ether) Dendrimers. J Phys Chem B 2006; 110:4663-70. [PMID: 16526699 DOI: 10.1021/jp057002w] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of Fréchet-type poly(aryl ether) dendrimers (CZ-Gn-NBD, n = 1-3) with carbazole (CZ) chromophores and a norbornadiene (NBD) group attached to the periphery and the core, respectively, were synthesized, and their photophysical and photochemical properties were investigated. Selective excitation of the carbazole units in CZ-Gn-NBD resulted in a singlet electron transfer from CZ to NBD at room temperature, and an intersystem crossing followed a triplet-triplet energy transfer from CZ to NBD in glassy 2-methyltetrahydrofuran at 77 K. Both singlet electron transfer and triplet energy transfer processes lead to the isomerization of the norbornadiene group into the quadricyclane (CZ-Gn-QC). The efficiencies and the rate constants for singlet electron transfer are approximately 88, 80, and 74% and 1.8 x 10(9), 6.1 x 10(8), and 4.0 x 10(8) s(-1) for generations 1-3, respectively. The quantum yields of the intramolecular photosensitized isomerization are measured to be approximately 0.013, 0.012, and 0.011, and the efficiencies of triplet norbornadiene formation via singlet electron transfer are approximately 0.070, 0.065, and 0.059 for generations 1-3, respectively. The light-harvesting ability of CZ-Gn-NBD increases with the generation due to an increase of the number of peripheral chromophores. In glassy 2-methyltetrahydrofuran at 77 K, the triplet-triplet energy transfer proceeds with efficiencies of approximately 0.86, 0.64, and 0.36 and rate constants of 0.96, 0.25, and 0.08 s(-1) for generations 1-3, respectively. The intramolecular singlet electron transfer and triplet energy transfer in CZ-Gn-NBD proceed mainly via a through-space mechanism involving the proximate donor (folding back conformation) and acceptor groups.
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Affiliation(s)
- Jie Chen
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, China
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Lee KS, Yang DY, Park SH, Kim RH. Recent developments in the use of two-photon polymerization in precise 2D and 3D microfabrications. POLYM ADVAN TECHNOL 2006. [DOI: 10.1002/pat.664] [Citation(s) in RCA: 152] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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Synthesis of Fréchet type dendritic benzyl propargyl ether and Fréchet type triazole dendrimer. Tetrahedron 2006. [DOI: 10.1016/j.tet.2005.10.039] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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16
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Facile Synthesis of Fréchet Type Dendritic Benzyl Azides and Dendrimer via Cycloaddition Reaction with Tripodal Core. B KOREAN CHEM SOC 2005. [DOI: 10.5012/bkcs.2005.26.11.1790] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Boubbou KH, Ghaddar TH. Electrostatic layer-by-layer deposition of photoactive dendrimers with triviologen-like cores on their surfaces. Synthesis and electrochemical and photocurrent generation measurements. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:8844-51. [PMID: 16142969 DOI: 10.1021/la051100r] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The stepwise assembly of Fréchet-type dendrimers with naphthalene peripheral groups and positively charged viologen-like cores on quartz and ITO surfaces utilizing the layer-by-layer approach was investigated. We were able to deposit only the (+6) charged dendrimers series on ITO. The number of assembled dendrimers was found to increase as we go to higher-generation dendrimers. This dendrimer generation effect was evident from the UV-vis and electrochemical measurements of the assembled dendrimers. The half-wave potentials (E1/2) of the dendrimers shift to less negative values as the dendrimer generation increases in acetonitrile and to more negative values when assembled on ITO. Anodic photocurrent generation was seen upon light irradiation of the second- and third-generation dendrimers, NB1V3+6 and NB2V3+6, assembled on ITO but not for the zero-generation one, NV3+6. This observation was attributed to a fast charge recombination process in NV3+6 when compared to that of NB1V3+6 and NB2V3+6 dendrimers.
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Hara M, Samori S, Cai X, Tojo S, Arai T, Momotake A, Hayakawa J, Uda M, Kawai K, Endo M, Fujitsuka M, Majima T. Inhibition of the Formation and Decay of Stilbene Core Radical Cations by the Dendron during the Photoinduced Electron Transfer. J Phys Chem B 2004; 109:973-6. [PMID: 16866467 DOI: 10.1021/jp045777j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Formation and decay processes of stilbene core radical cation (ST*+) during the photoinduced electron transfer have been studied for a series of stilbene bearing benzyl ether-type dendrons (D). ST*+ and the radical cation of peripheral dendron (D*+) were generated by intermolecular hole transfer from biphenyl radical cation, which was generated from photoinduced electron transfer from biphenyl to the singlet-excited 9,10-dicyanoanthracene in a mixture of acetonitrile and 1,2-dichloroethane (3:1). An intramolecular dimer radical cation of benzyl groups at the terminal of stilbene dendrimer was indicated as a hole trapping site. Subsequent hole transfer from the trapping site to the core ST generated ST*+. The shielding effects of D depending on the dendrimer generation on the growth and decay of ST*+ were observed. It was revealed for the first time that D acts as the hole trapping site and the hole conductor on the way of the exothermic hole transfer from the terminal of D to the central core ST. We also found that D inhibits the charge recombination with 9,10-dicyanoanthracene radical anion because of the steric hindrance.
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Affiliation(s)
- Michihiro Hara
- The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
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