Ruthenium aminophenanthroline metallopolymer films electropolymerized from an ionic liquid: Deposition and electrochemical and photonic properties

Anita Venkatanarayanan, Anna-Maria Spehar-Deleze, Lynn Dennany, Yann Pellegrin, Tia E. Keyes, Robert J. Forster

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The oxidative electropolymerization of [Ru(aphen)(3)](PF6)(2) from an ionic liquid, 1-butyl-2,3-dimethylimidazolium bis[(trifluoromethyl)sulfonyl]imide (BDMITFSI), is reported; aphen is 5-amino-1,10-phenanthroline. The deposition rate in the ionic liquid is more than an order of magnitude faster than in conventional solvents such as anhydrous acetonitrile and aqueous Sulfuric acid. The UV-vis absorbance, Raman, and emission spectra of the films grown in ionic liquid, acetonitrile, and Sulfuric acid suggest that the polymer formed does not depend on the solvent. However, scanning electron microscopy shows that the film morphologies differ significantly; e.g., films deposited from BDMITFSI have high surface roughness, while films produced in acetonitrile and sulfuric acid are relatively smooth. The rate of homogeneous charge transport through films grown in ionic liquids is (6.4 +/- 1.2) x 10(-9) cm(2) s(-1), which is approximately 2 orders of magnitude faster than that found for films deposited from acetonitrile. Thin electropolymerized films generate electrochemiluminescence (ECL) in the presence of tripropylamine as a coreactant. Films produced from sulfuric acid are very thin compared to the ones produced in BDMITFSI; however, they produce an ECL signal of similar intensity. The ECL responses of films produced in anhydrous acetonitrile are significantly less intense. The ECL intensity within the films is approximately 5-fold higher than when they are dissolved and measured in solution.

Original languageEnglish
Pages (from-to)11233-11238
Number of pages6
JournalLangmuir
Volume24
Issue number19
DOIs
Publication statusPublished - 7 Oct 2008

Fingerprint

Ionic Liquids
Ruthenium
Ionic liquids
Photonics
ruthenium
photonics
Acetonitrile
liquids
acetonitrile
sulfuric acid
Imides
Sulfuric acid
imides
acids
ruthenium aminophenanthroline
Electropolymerization
Deposition rates
Charge transfer
Polymers
surface roughness

Keywords

  • oxidative electropolymerization
  • electron transfer
  • charge-transport
  • metal-complexes
  • polymerization
  • polymers

Cite this

Venkatanarayanan, Anita ; Spehar-Deleze, Anna-Maria ; Dennany, Lynn ; Pellegrin, Yann ; Keyes, Tia E. ; Forster, Robert J. / Ruthenium aminophenanthroline metallopolymer films electropolymerized from an ionic liquid: Deposition and electrochemical and photonic properties. In: Langmuir. 2008 ; Vol. 24, No. 19. pp. 11233-11238.
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abstract = "The oxidative electropolymerization of [Ru(aphen)(3)](PF6)(2) from an ionic liquid, 1-butyl-2,3-dimethylimidazolium bis[(trifluoromethyl)sulfonyl]imide (BDMITFSI), is reported; aphen is 5-amino-1,10-phenanthroline. The deposition rate in the ionic liquid is more than an order of magnitude faster than in conventional solvents such as anhydrous acetonitrile and aqueous Sulfuric acid. The UV-vis absorbance, Raman, and emission spectra of the films grown in ionic liquid, acetonitrile, and Sulfuric acid suggest that the polymer formed does not depend on the solvent. However, scanning electron microscopy shows that the film morphologies differ significantly; e.g., films deposited from BDMITFSI have high surface roughness, while films produced in acetonitrile and sulfuric acid are relatively smooth. The rate of homogeneous charge transport through films grown in ionic liquids is (6.4 +/- 1.2) x 10(-9) cm(2) s(-1), which is approximately 2 orders of magnitude faster than that found for films deposited from acetonitrile. Thin electropolymerized films generate electrochemiluminescence (ECL) in the presence of tripropylamine as a coreactant. Films produced from sulfuric acid are very thin compared to the ones produced in BDMITFSI; however, they produce an ECL signal of similar intensity. The ECL responses of films produced in anhydrous acetonitrile are significantly less intense. The ECL intensity within the films is approximately 5-fold higher than when they are dissolved and measured in solution.",
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Ruthenium aminophenanthroline metallopolymer films electropolymerized from an ionic liquid: Deposition and electrochemical and photonic properties. / Venkatanarayanan, Anita; Spehar-Deleze, Anna-Maria; Dennany, Lynn; Pellegrin, Yann; Keyes, Tia E.; Forster, Robert J.

In: Langmuir, Vol. 24, No. 19, 07.10.2008, p. 11233-11238.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ruthenium aminophenanthroline metallopolymer films electropolymerized from an ionic liquid: Deposition and electrochemical and photonic properties

AU - Venkatanarayanan, Anita

AU - Spehar-Deleze, Anna-Maria

AU - Dennany, Lynn

AU - Pellegrin, Yann

AU - Keyes, Tia E.

AU - Forster, Robert J.

PY - 2008/10/7

Y1 - 2008/10/7

N2 - The oxidative electropolymerization of [Ru(aphen)(3)](PF6)(2) from an ionic liquid, 1-butyl-2,3-dimethylimidazolium bis[(trifluoromethyl)sulfonyl]imide (BDMITFSI), is reported; aphen is 5-amino-1,10-phenanthroline. The deposition rate in the ionic liquid is more than an order of magnitude faster than in conventional solvents such as anhydrous acetonitrile and aqueous Sulfuric acid. The UV-vis absorbance, Raman, and emission spectra of the films grown in ionic liquid, acetonitrile, and Sulfuric acid suggest that the polymer formed does not depend on the solvent. However, scanning electron microscopy shows that the film morphologies differ significantly; e.g., films deposited from BDMITFSI have high surface roughness, while films produced in acetonitrile and sulfuric acid are relatively smooth. The rate of homogeneous charge transport through films grown in ionic liquids is (6.4 +/- 1.2) x 10(-9) cm(2) s(-1), which is approximately 2 orders of magnitude faster than that found for films deposited from acetonitrile. Thin electropolymerized films generate electrochemiluminescence (ECL) in the presence of tripropylamine as a coreactant. Films produced from sulfuric acid are very thin compared to the ones produced in BDMITFSI; however, they produce an ECL signal of similar intensity. The ECL responses of films produced in anhydrous acetonitrile are significantly less intense. The ECL intensity within the films is approximately 5-fold higher than when they are dissolved and measured in solution.

AB - The oxidative electropolymerization of [Ru(aphen)(3)](PF6)(2) from an ionic liquid, 1-butyl-2,3-dimethylimidazolium bis[(trifluoromethyl)sulfonyl]imide (BDMITFSI), is reported; aphen is 5-amino-1,10-phenanthroline. The deposition rate in the ionic liquid is more than an order of magnitude faster than in conventional solvents such as anhydrous acetonitrile and aqueous Sulfuric acid. The UV-vis absorbance, Raman, and emission spectra of the films grown in ionic liquid, acetonitrile, and Sulfuric acid suggest that the polymer formed does not depend on the solvent. However, scanning electron microscopy shows that the film morphologies differ significantly; e.g., films deposited from BDMITFSI have high surface roughness, while films produced in acetonitrile and sulfuric acid are relatively smooth. The rate of homogeneous charge transport through films grown in ionic liquids is (6.4 +/- 1.2) x 10(-9) cm(2) s(-1), which is approximately 2 orders of magnitude faster than that found for films deposited from acetonitrile. Thin electropolymerized films generate electrochemiluminescence (ECL) in the presence of tripropylamine as a coreactant. Films produced from sulfuric acid are very thin compared to the ones produced in BDMITFSI; however, they produce an ECL signal of similar intensity. The ECL responses of films produced in anhydrous acetonitrile are significantly less intense. The ECL intensity within the films is approximately 5-fold higher than when they are dissolved and measured in solution.

KW - oxidative electropolymerization

KW - electron transfer

KW - charge-transport

KW - metal-complexes

KW - polymerization

KW - polymers

U2 - 10.1021/la8011316

DO - 10.1021/la8011316

M3 - Article

VL - 24

SP - 11233

EP - 11238

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 19

ER -