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Pulse Radiolysis Studies of Dendritic Macromolecules with Biphenyl Peripheral Groups and a Ruthenium Tris-bipyridine Core

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Tarek H. Ghaddar,^§ James F. Wishart,^† James P. Kirby,^† James K. Whitesell,^§ and Marye Anne Fox*^§

Contribution from the Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, and Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973

J. Am. Chem. Soc., 2001, 123 (51), pp 12832–12836

DOI: 10.1021/ja011615e

Publication Date (Web): December 1, 2001

Section:

Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes

Abstract

Electron-transfer reactions in Fréchet-type dendrimers with biphenyl peripheral groups and a ruthenium core were investigated by pulse radiolysis techniques. Fast electron-transfer rates found in the two ruthenium dendrimers suggest a very efficient electronic coupling between the peripheral donor groups and the core acceptor.

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This article has been cited by 13 ACS Journal articles (5 most recent appear below).

Photodynamic Behavior of Heteroleptic Ir(III) Complexes with Carbazole-Functionalized Dendrons Associated with Efficient Electron Transfer Processes
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The Journal of Physical Chemistry C2012 116 (2), 1973-1986
- Photodynamic Behavior of Heteroleptic Ir(III) Complexes with Carbazole-Functionalized Dendrons Associated with Efficient Electron Transfer Processes
  Ah-Reum Hwang, Won-Sik Han, Kyung-Ryang Wee, Hyun Young Kim, Dae Won Cho, Byoung Koun Min, Suk Woo Nam, Chyongjin Pac, and Sang Ook Kang
  The Journal of Physical Chemistry C2012 116 (2), 1973-1986
  We prepared dendrimers of heteroleptic iridium(III) complexes, [(dfppy–Cz1)2Ir(dpq)]+ (G1) and [(dfppy–Cz2)2Ir(dpq)]+ (G2), which have the dfppy ligand connected to carbazole-functionalized dendron Czn (n = 1, 2) [dfppy–Czn = 5-Czn-2-(4,6-difluorophenyl)...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
A Perspective on Organic Chemistry: Physical Organic Chemistry
Marye Anne Fox
The Journal of Organic Chemistry2009 74 (22), 8497-8509
- A Perspective on Organic Chemistry: Physical Organic Chemistry
  Marye Anne Fox
  The Journal of Organic Chemistry2009 74 (22), 8497-8509
  A physical organic chemist wants to understand the detailed sequence of bond makings and bond breakings by which new or well-known reactions take place, i.e., the reaction mechanism, and to identify any metastable intermediates involved. The ultimate goal ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
Long-Lived Hole Stabilized at a Triphenylamine Core and Shielded by Rigid Phenylazomethine Dendrons: A Pulse Radiolysis Study
Akinori Saeki, Shu Seki, Norifusa Satoh, Kimihisa Yamamoto and Seiichi Tagawa
The Journal of Physical Chemistry B2008 112 (49), 15540-15545
- Long-Lived Hole Stabilized at a Triphenylamine Core and Shielded by Rigid Phenylazomethine Dendrons: A Pulse Radiolysis Study
  Akinori Saeki, Shu Seki, Norifusa Satoh, Kimihisa Yamamoto and Seiichi Tagawa
  The Journal of Physical Chemistry B2008 112 (49), 15540-15545
  The optical properties and reactivity of one-electron oxidized states (radical cations) of dendrimers are investigated in benzonitrile solutions by nanosecond pulse radiolysis. The hole stabilized at the triphenylamine (TPA) core is effectively shielded ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
Synthesis of Novel Dendritic 2,2‘-Bipyridine Ligands and Their Application to Lewis Acid-Catalyzed Diels−Alder and Three-Component Condensation Reactions
Takahito Muraki, Ken-ichi Fujita, and Masato Kujime
The Journal of Organic Chemistry2007 72 (21), 7863-7870
- Synthesis of Novel Dendritic 2,2‘-Bipyridine Ligands and Their Application to Lewis Acid-Catalyzed Diels−Alder and Three-Component Condensation Reactions
  Takahito Muraki, Ken-ichi Fujita, and Masato Kujime
  The Journal of Organic Chemistry2007 72 (21), 7863-7870
  A series of dendritic ligands with a 2,2‘-bipyridine core was synthesized through the coupling of 4,4‘-dihydroxy-2,2‘-bipyridine with poly(aryl ether) dendrons. The corresponding dendritic Cu(OTf)2 catalysts were used for Diels−Alder and three-component ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
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
Jie Chen, Jinping Chen, Shayu Li, Lu Zhang, Guoqiang Yang, and Yi Li
The Journal of Physical Chemistry B2006 110 (10), 4663-4670
- 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
  Jie Chen, Jinping Chen, Shayu Li, Lu Zhang, Guoqiang Yang, and Yi Li
  The Journal of Physical Chemistry B2006 110 (10), 4663-4670
  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 ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links