1
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Hadad C, Garcı́a-Martı́nez JC, Rodrı́guez-López J. Layer-Block Dendrimers with Alternating Thienylenevinylene and Phenylenevinylene Units. J Org Chem 2012; 77:6223-30. [DOI: 10.1021/jo301054w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Caroline Hadad
- Facultad
de Ciencias y Tecnologías Quı́micas, Universidad de Castilla-La Mancha, 13071
Ciudad Real, Spain
| | | | - Julián Rodrı́guez-López
- Facultad
de Ciencias y Tecnologías Quı́micas, Universidad de Castilla-La Mancha, 13071
Ciudad Real, Spain
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2
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Liu X, Guan Y, Wang Q, Ren X, Yang M. The surface modification of magnetic poly(methyl acrylate) microspheres with dendron and application in Au(III) adsorption. J Appl Polym Sci 2012. [DOI: 10.1002/app.36689] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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3
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Ito Y, Higashihara T, Ueda M. Synthesis of Aliphatic Polyamide Dendrimers Based on Facile Convergent Method. Macromolecules 2012. [DOI: 10.1021/ma300735w] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Yumiko Ito
- Department
of Organic and Polymeric Materials, Graduate
School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552,
Japan
| | - Tomoya Higashihara
- Department
of Organic and Polymeric Materials, Graduate
School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552,
Japan
| | - Mitsuru Ueda
- Department
of Organic and Polymeric Materials, Graduate
School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552,
Japan
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4
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Kömürlü S, Lee SH, McCarley T, Schanze KS, Kleiman VD. Energy Transfer in Extended Thienylene-Phenylene-Ethynylene Dendrimers. J Phys Chem B 2011; 115:15214-20. [DOI: 10.1021/jp2089802] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sevnur Kömürlü
- Department of Chemistry and Center for Chemical Physics, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Seoung Ho Lee
- Department of Chemistry and Center for Chemical Physics, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Tracy McCarley
- Department of Chemistry and Center for Chemical Physics, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Kirk S. Schanze
- Department of Chemistry and Center for Chemical Physics, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Valeria D. Kleiman
- Department of Chemistry and Center for Chemical Physics, University of Florida, Gainesville, Florida 32611-7200, United States
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5
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Kashiki T, Kohara M, Osaka I, Miyazaki E, Takimiya K. Synthesis and Characterization of Benzo[1,2-b:3,4-b′:5,6-b′′]trithiophene (BTT) Oligomers. J Org Chem 2011; 76:4061-70. [DOI: 10.1021/jo2005044] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tomoya Kashiki
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Masahiro Kohara
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Itaru Osaka
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Eigo Miyazaki
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Kazuo Takimiya
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
- Institute for Advanced Materials Research, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
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6
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Badaeva E, Harpham MR, Guda R, Süzer Ö, Ma CQ, Bäuerle P, Goodson T, Tretiak S. Excited-State Structure of Oligothiophene Dendrimers: Computational and Experimental Study. J Phys Chem B 2010; 114:15808-17. [DOI: 10.1021/jp109624d] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ekaterina Badaeva
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States, Department of Chemistry, Applied Physics Program, The University of Michigan, Ann Arbor Michigan 48109, United States, Institute of Organic Chemistry II and Advanced Materials, University of Ulm, 89081, Ulm, Germany, and Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Michael R. Harpham
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States, Department of Chemistry, Applied Physics Program, The University of Michigan, Ann Arbor Michigan 48109, United States, Institute of Organic Chemistry II and Advanced Materials, University of Ulm, 89081, Ulm, Germany, and Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Ramakrishna Guda
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States, Department of Chemistry, Applied Physics Program, The University of Michigan, Ann Arbor Michigan 48109, United States, Institute of Organic Chemistry II and Advanced Materials, University of Ulm, 89081, Ulm, Germany, and Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Özgün Süzer
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States, Department of Chemistry, Applied Physics Program, The University of Michigan, Ann Arbor Michigan 48109, United States, Institute of Organic Chemistry II and Advanced Materials, University of Ulm, 89081, Ulm, Germany, and Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Chang-Qi Ma
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States, Department of Chemistry, Applied Physics Program, The University of Michigan, Ann Arbor Michigan 48109, United States, Institute of Organic Chemistry II and Advanced Materials, University of Ulm, 89081, Ulm, Germany, and Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Peter Bäuerle
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States, Department of Chemistry, Applied Physics Program, The University of Michigan, Ann Arbor Michigan 48109, United States, Institute of Organic Chemistry II and Advanced Materials, University of Ulm, 89081, Ulm, Germany, and Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Theodore Goodson
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States, Department of Chemistry, Applied Physics Program, The University of Michigan, Ann Arbor Michigan 48109, United States, Institute of Organic Chemistry II and Advanced Materials, University of Ulm, 89081, Ulm, Germany, and Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Sergei Tretiak
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States, Department of Chemistry, Applied Physics Program, The University of Michigan, Ann Arbor Michigan 48109, United States, Institute of Organic Chemistry II and Advanced Materials, University of Ulm, 89081, Ulm, Germany, and Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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7
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Endo K, Ito Y, Higashihara T, Ueda M. Synthesis of a novel water-soluble polyamide dendrimer based on a facile convergent method. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2009.04.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Kim D, Scranton AB, Stansbury JW. Analysis of association constant for ground state dye-electron acceptor complex of photoinitiator systems and the association constant effect on the kinetics of visible-light-induced polymerizations. JOURNAL OF POLYMER SCIENCE. PART A, POLYMER CHEMISTRY 2009; 47:1429-1439. [PMID: 20161099 PMCID: PMC2745164 DOI: 10.1002/pola.23252] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We investigated the formation of ground state donor/acceptor complexes between xanthene dyes (rose Bengal (RB) and fluorescein (FL)) and a diphenyl iodonium salt (DPI) which is dissolved in 2-hydroxyethyl methacrylate (HEMA) monomer. To characterize the association constant of the complex, we have suggested a new analysis model based upon the Benesi-Hildebrand model. Because the assumption of the original Benesi-Hildebrand model is that the absorption bands are due only to the presence of the complex and that the absorption by the free component is negligible; the model cannot be applied to our systems, which is a dye-based initiator system. For each dye, the molar absorptivity of the ground state complex was evaluated as a function of wavelength and this analysis confirmed the validity of the modified Benesi-Hildebrand model. In addition, we observed the RB/DPI photoinitiator system failed to produce a perceptible polymerization rate but the FL/DPI photoinitiator system provided very high rates of polymerization. Based upon the association constant for these complexes, we concluded that the observed kinetic differences arise from the different association constant values of the ground state dye-acceptor complex, resulting in back electron transfer reaction.
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Affiliation(s)
- Dongkwan Kim
- University of Colorado-Denver, School of Dental Medicine, Department of Craniofacial Biology, PO Box 6511/Mail Stop 8310, Aurora, Colorado 80045
| | - Alec B. Scranton
- University of Iowa, Department of Chemical and Biochemical Engineering, 4133 Seamans Center, Iowa City, Iowa 52242
| | - Jeffrey W. Stansbury
- University of Colorado-Denver, School of Dental Medicine, Department of Craniofacial Biology, PO Box 6511/Mail Stop 8310, Aurora, Colorado 80045
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9
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Pepitone MF, Jernigan GG, Melinger JS, Kim OK. Synthesis and Characterization of Donor−Acceptor Chromophores for Unidirectional Electron Transfer. Org Lett 2007; 9:801-4. [PMID: 17286407 DOI: 10.1021/ol063000y] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] A series of electron-transfer chromophores containing a donor and acceptor linked by an alkyl spacer were synthesized, and their electronic spectra were investigated. By inclusion with amylose, the supramolecularly encapsulated chromophores exhibit enhanced fluorescence quenching with discrete distance dependence and acquire the ability to sustain self-assemblies of a densely packed supramolecular array on a SiOH/Si substrate.
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Affiliation(s)
- M F Pepitone
- Chemistry Division, Electronics Science & Technology Division and Institute for Nanoscience, Naval Research Laboratory, Washington, DC 20375-5342, USA
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10
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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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Zhang X, Li ZC, Li KB, Lin S, Du FS, Li FM. Donor/acceptor vinyl monomers and their polymers: Synthesis, photochemical and photophysical behavior. Prog Polym Sci 2006. [DOI: 10.1016/j.progpolymsci.2006.08.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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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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13
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Aathimanikandan SV, Sandanaraj BS, Arges CG, Bardeen CJ, Thayumanavan S. Effect of Guest Molecule Flexibility in Access to Dendritic Interiors. Org Lett 2005; 7:2809-12. [PMID: 15987142 DOI: 10.1021/ol050579b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[structure: see text] Dendrimers are attractive scaffolds for catalysis, since catalytic sites can be isolated and the catalysts are recoverable and reusable. Herein, we show that conformationally constrained molecules have better access to dendritic cores compared to the more flexible counterparts. The results reported here should have implications in utilizing dendrimers as scaffolds for artificial selectivity in catalysis.
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14
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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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15
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Wang BB, Zhang X, Jia XR, Li ZC, Ji Y, Yang L, Wei Y. Fluorescence and Aggregation Behavior of Poly(amidoamine) Dendrimers Peripherally Modified with Aromatic Chromophores: the Effect of Dendritic Architectures. J Am Chem Soc 2004; 126:15180-94. [PMID: 15548015 DOI: 10.1021/ja048219r] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PAMAM dendrimers of the zeroth to fifth generation (G0-5) have been peripherally modified with phenyl, naphthyl, pyrenyl, and dansyl chromophores. Their fluorescence behaviors are strongly affected by the dendritic architectures at different generations. These dendrimers modified with hydrophobic chromphores can self-organize into vesicular aggregates at the low generations G0-3 in water. The size and aggregation number of these vesicles decrease with increasing generation from G0 to G3. Critical aggregation concentration determined by fluorescence spectroscopy reveals that these aggregates can be favorably formed in the order of G3 > G2 > G1. In contrast to the vesicles made from traditional amphiphilic compounds, these dendrimer-based vesicles are very adhesive due to the H-bonding interaction and entanglement of dendritic branches located in the outer layer. A large number of multivesicle assemblies, i.e., "twins" and "quins" consisting of two and five vesicles, were clearly identifiable with transmission electron (TEM) and atomic force microscopy. For the dendrimers with peripheral pyrenyl chromophores, triangle-like vesicles were observed in water. The hydrophobic interphase thickness of the vesicular bilayer is ca. 2.0-3.2 nm determined by fluorescence resonance energy transfer methods, which agrees well with the thickness directly observed with TEM.
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Affiliation(s)
- Bing-Bing Wang
- Department of Polymer Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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16
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Chong SHF, Lam SCF, Yam VWW, Zhu N, Cheung KK, Fathallah S, Costuas K, Halet JF. Luminescent Heterometallic Branched Alkynyl Complexes of Rhenium(I)−Palladium(II): Potential Building Blocks for Heterometallic Metallodendrimers. Organometallics 2004. [DOI: 10.1021/om049696l] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Díez-Barra E, García-Martínez JC, del Rey R, Rodríguez-López J, Giacalone F, Segura JL, Martín N. Synthesis and photoluminescent properties of 1,1'-binaphthyl-based chiral phenylenevinylene dendrimers. J Org Chem 2003; 68:3178-83. [PMID: 12688788 DOI: 10.1021/jo026222s] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
New chiral, soluble binaphthyl derivatives that incorporate stilbenoid dendrons at the 6,6'-positions have been prepared. The synthesis of the new enantiopure dendrimers was performed in a convergent manner by Horner-Wadsworth-Emmons (HWE) reaction of the appropriately functionalized 1,1'-binaphthyl derivative (R)-1 and the appropriate dendrons (R)(2n)G(n)-CHO. Different electroactive units were incorporated in the peripheral positions of the dendrons in order to tune both the optical and electrochemical behavior of these systems. Fluorescence measurements on the chiral dendrimers reveal a strong emission with maxima between 409 and 508 nm depending upon the substitution pattern. Finally, the redox properties of the dendrimers were determined by cyclic voltammetry, showing the influence of the functional groups at the peripheral positions of the dendrimer on the redox behavior of these systems.
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Affiliation(s)
- Enrique Díez-Barra
- Facultad de Ciencias Químicas, Universidad de Castilla-La Mancha, 13071-Ciudad Real, Spain.
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18
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Tyson DS, Luman CR, Castellano FN. Photodriven electron and energy transfer from a light-harvesting metallodendrimer. Inorg Chem 2002; 41:3578-86. [PMID: 12079481 DOI: 10.1021/ic011298c] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Intermolecular electron and energy transfer from a light-harvesting metallodendrimer [Ru[bpy(C-450)(4)](3)](2+), where bpy(C-450)(4) is a 2,2'-bipyridine derivative containing 4 coumarin-450 units connected together through aryl ether linkages, is observed in acetonitrile solutions at room temperature. The model complex [Ru(dmb)(3)](2+), where dmb is 4,4'-dimethyl-2,2'-bipyridine, is included for quantitative comparison. The excited states of both compounds are metal-to-ligand charge transfer in nature and participate in excited-state electron and triplet energy transfer processes. Quenching constants were determined from luminescence and time-resolved absorption experiments at constant ionic strength. [Ru[bpy(C-450)(4)](3)](2+) displays significantly slower quenching rates to molecular oxygen and methyl viologen relative to the other processes investigated. Triplet energy transfer from [Ru[bpy(C-450)(4)](3)](2+) to 9-methylanthracene is quantitatively indistinguishable from [Ru(dmb)(3)](2+) while reductive electron transfer from phenothiazine was slightly faster in the former. With the exception of dioxygen quenching, our results indicate that the current dendritic structure is ineffective in shielding the core from bimolecular electron and triplet energy transfer reactions. Electrochemical measurements of [Ru[bpy(C-450)(4)](3)](2+) reveal irreversible oxidative processes at potentials slightly negative to the Ru(III/II) potential that are assigned to oxidations in the dendritic structure. Excited-state oxidative electron-transfer reactions facilitate this process resulting in the reduction of ground-state Ru(III) to Ru(II) and the trapping of the methyl viologen radical cation (MV(*+)) when methyl viologen serves as the quencher. This process generates a minimum of 9 MV(*+)'s for every [Ru[bpy(C-450)(4)](3)](2+) molecule and disassembles the metallodendrimer, resulting in the production of a [Ru(dmb)(3)](2+)-like species and "free" C-450-like dyes.
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Affiliation(s)
- Daniel S Tyson
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, USA
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19
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Grayson SM, Fréchet JM. Convergent dendrons and dendrimers: from synthesis to applications. Chem Rev 2001; 101:3819-68. [PMID: 11740922 DOI: 10.1021/cr990116h] [Citation(s) in RCA: 1173] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S M Grayson
- Department of Chemistry, University of California, Berkeley, California 94720-1460, USA
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20
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Kimura M, Shiba T, Yamazaki M, Hanabusa K, Shirai H, Kobayashi N. Construction of regulated nanospace around a porphyrin core. J Am Chem Soc 2001; 123:5636-42. [PMID: 11403594 DOI: 10.1021/ja004312d] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of 1,3,5-phenylene-based rigid dendritic porphyrins were synthesized by Suzuki coupling between a porphyrin core and dendron units. The intramolecular energy transfer was studied by absorption and fluorescence spectroscopies. The encapsulation of the porphyrin core within the 1,3,5-phenylene dendron units was found to provide highly efficient energy transfer from the dendron units to the porphyrin core. The dendritic wedge structure affected the energy transfer efficiency. The 1,3,5-phenylene-based rigid dendron units act as highly efficient light-harvesting antennae. These dendritic porphyrins have also been examined as C(60) hosts and substrate-selective oxidation catalysts. The attachment of the second generation of 1,3,5-phenylene-based dendron units with the porphyrin core enabled a stable inclusion of C(60) in toluene. Furthermore, the size and shape of the nanospace in the rigid dendritic porphyrins were found to affect the selectivity of substrates in the catalytic olefin oxidations.
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Affiliation(s)
- M Kimura
- Department of Functional Polymer Science, Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan
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21
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Kirkwood JC, Scheurer C, Chernyak V, Mukamel S. Simulations of energy funneling and time- and frequency-gated fluorescence in dendrimers. J Chem Phys 2001. [DOI: 10.1063/1.1334612] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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22
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Chernyak V, Minami T, Mukamel S. Exciton transport in molecular aggregates probed by time and frequency gated optical spectroscopy. J Chem Phys 2000. [DOI: 10.1063/1.481396] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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23
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Kimura M, Shiba T, Muto T, Hanabusa K, Shirai H. Intramolecular Energy Transfer in 1,3,5-Phenylene-Based Dendritic Porphyrins. Macromolecules 1999. [DOI: 10.1021/ma991246v] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mutsumi Kimura
- Department of Functional Polymer Science, Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan
| | - Tetsuo Shiba
- Department of Functional Polymer Science, Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan
| | - Tsuyoshi Muto
- Department of Functional Polymer Science, Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan
| | - Kenji Hanabusa
- Department of Functional Polymer Science, Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan
| | - Hirofusa Shirai
- Department of Functional Polymer Science, Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan
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24
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Affiliation(s)
- T. Sean Elicker
- Quantum Chemistry Research Group, Albuquerque High-Performance Computing Center and Department of Chemistry, University of New Mexico, Albuquerque, New Mexico 87131
| | - Deborah G. Evans
- Quantum Chemistry Research Group, Albuquerque High-Performance Computing Center and Department of Chemistry, University of New Mexico, Albuquerque, New Mexico 87131
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Affiliation(s)
- Qiao-Sheng Hu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901
| | - Vincent Pugh
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901
| | - Michal Sabat
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901
| | - Lin Pu
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901
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Ng ACH, Li XY, Ng DKP. Synthesis and Photophysical Properties of Nonaggregated Phthalocyanines Bearing Dendritic Substituents. Macromolecules 1999. [DOI: 10.1021/ma990367s] [Citation(s) in RCA: 128] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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