SHG of ultrathin films of metal porphyrins on BK7 glass in total internal reflection geometry

Theory and experiments

Lorenzo Echevarria, Pedro Nieto, Héctor Gutiérrez, Vladimiro Mujica, Manuel Caetano

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We present a novel methodology that combines a theoretical description and experimental characterization of the structure and first hyperpolarizability of ultrathin films of VO-octaethyl-porphyrins (VOOETP, Scheme 1) adsorbed on a BK7 activated glass. Films were characterized by ellipsometry, and the geometry is inferred from a consistent comparison between the theoretical hyperpolarizability and the experimental measurements. The hyperpolarizability is determined through second harmonic generation (SHG) techniques, and ellipsometry is used independently to determine the thickness of the film. An analysis of the Fourier components of the tensor relating the incident and SHG fields reveals the existence of a linear dependence between the Fourier components that greatly reduces the amount of required experimental information. Using this methodology, we obtain reasonable agreement between the observed and calculated intrinsic hyperpolarizabilities (βzexpztheo = 0.95) that we attribute to the dimer.

Original languageEnglish
Pages (from-to)9332-9338
Number of pages7
JournalJournal of Physical Chemistry B
Volume107
Issue number35
Publication statusPublished - Sep 4 2003

Fingerprint

Ultrathin films
Porphyrins
Ellipsometry
Harmonic generation
porphyrins
harmonic generations
Metals
Glass
ellipsometry
Geometry
glass
geometry
Dimers
methodology
metals
Tensors
Experiments
dimers
tensors

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

SHG of ultrathin films of metal porphyrins on BK7 glass in total internal reflection geometry : Theory and experiments. / Echevarria, Lorenzo; Nieto, Pedro; Gutiérrez, Héctor; Mujica, Vladimiro; Caetano, Manuel.

In: Journal of Physical Chemistry B, Vol. 107, No. 35, 04.09.2003, p. 9332-9338.

Research output: Contribution to journalArticle

Echevarria, Lorenzo ; Nieto, Pedro ; Gutiérrez, Héctor ; Mujica, Vladimiro ; Caetano, Manuel. / SHG of ultrathin films of metal porphyrins on BK7 glass in total internal reflection geometry : Theory and experiments. In: Journal of Physical Chemistry B. 2003 ; Vol. 107, No. 35. pp. 9332-9338.
@article{c20400421a9b49eab2046cdbd1ddafdc,
title = "SHG of ultrathin films of metal porphyrins on BK7 glass in total internal reflection geometry: Theory and experiments",
abstract = "We present a novel methodology that combines a theoretical description and experimental characterization of the structure and first hyperpolarizability of ultrathin films of VO-octaethyl-porphyrins (VOOETP, Scheme 1) adsorbed on a BK7 activated glass. Films were characterized by ellipsometry, and the geometry is inferred from a consistent comparison between the theoretical hyperpolarizability and the experimental measurements. The hyperpolarizability is determined through second harmonic generation (SHG) techniques, and ellipsometry is used independently to determine the thickness of the film. An analysis of the Fourier components of the tensor relating the incident and SHG fields reveals the existence of a linear dependence between the Fourier components that greatly reduces the amount of required experimental information. Using this methodology, we obtain reasonable agreement between the observed and calculated intrinsic hyperpolarizabilities (βzexp/βztheo = 0.95) that we attribute to the dimer.",
author = "Lorenzo Echevarria and Pedro Nieto and H{\'e}ctor Guti{\'e}rrez and Vladimiro Mujica and Manuel Caetano",
year = "2003",
month = "9",
day = "4",
language = "English",
volume = "107",
pages = "9332--9338",
journal = "Journal of Physical Chemistry B",
issn = "1520-6106",
publisher = "American Chemical Society",
number = "35",

}

TY - JOUR

T1 - SHG of ultrathin films of metal porphyrins on BK7 glass in total internal reflection geometry

T2 - Theory and experiments

AU - Echevarria, Lorenzo

AU - Nieto, Pedro

AU - Gutiérrez, Héctor

AU - Mujica, Vladimiro

AU - Caetano, Manuel

PY - 2003/9/4

Y1 - 2003/9/4

N2 - We present a novel methodology that combines a theoretical description and experimental characterization of the structure and first hyperpolarizability of ultrathin films of VO-octaethyl-porphyrins (VOOETP, Scheme 1) adsorbed on a BK7 activated glass. Films were characterized by ellipsometry, and the geometry is inferred from a consistent comparison between the theoretical hyperpolarizability and the experimental measurements. The hyperpolarizability is determined through second harmonic generation (SHG) techniques, and ellipsometry is used independently to determine the thickness of the film. An analysis of the Fourier components of the tensor relating the incident and SHG fields reveals the existence of a linear dependence between the Fourier components that greatly reduces the amount of required experimental information. Using this methodology, we obtain reasonable agreement between the observed and calculated intrinsic hyperpolarizabilities (βzexp/βztheo = 0.95) that we attribute to the dimer.

AB - We present a novel methodology that combines a theoretical description and experimental characterization of the structure and first hyperpolarizability of ultrathin films of VO-octaethyl-porphyrins (VOOETP, Scheme 1) adsorbed on a BK7 activated glass. Films were characterized by ellipsometry, and the geometry is inferred from a consistent comparison between the theoretical hyperpolarizability and the experimental measurements. The hyperpolarizability is determined through second harmonic generation (SHG) techniques, and ellipsometry is used independently to determine the thickness of the film. An analysis of the Fourier components of the tensor relating the incident and SHG fields reveals the existence of a linear dependence between the Fourier components that greatly reduces the amount of required experimental information. Using this methodology, we obtain reasonable agreement between the observed and calculated intrinsic hyperpolarizabilities (βzexp/βztheo = 0.95) that we attribute to the dimer.

UR - http://www.scopus.com/inward/record.url?scp=0141571504&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0141571504&partnerID=8YFLogxK

M3 - Article

VL - 107

SP - 9332

EP - 9338

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

SN - 1520-6106

IS - 35

ER -