Degenerate multi-photon properties of spirofluorene derivatives

Namchul Cho; Patrice L. Baldeck; Guang S. He; Do Hoon Hwang; Paras N. Prasad; Prem Prabhakaran; Tae Dong Kim; Kwang Sup Lee

doi:10.1166/jnn.2010.2975

Degenerate multi-photon properties of spirofluorene derivatives

Namchul Cho
, Patrice L. Baldeck
, Guang S. He
, Do Hoon Hwang
, Paras N. Prasad
, Prem Prabhakaran
, Tae Dong Kim
, Kwang Sup Lee

Chemistry

Hannam University
CNRS (UMR 5588)
SUNY Buffalo
Kumoh National Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

Two- and three-photon absorption properties of the fluorene-based chromophores have been investigated. The two- and three-photon absorption cross-section are found to be increased with the strength of the electron donor groups in the order of N-ethylcarbazoyl (1), triphenylamino (2), and N,N-dibutylanilino (3) groups. This nonlinear absorption enhancement can be interpreted by the increase of intramolecular charge transfer facilitated by strong electron donors and the decreased detuning energy (ΔE). Furthermore, direct laser microfabrication by two-photon photopolymerization with compound 2 as a two-photon sensitizer was carried out. Laser exposure time-dependent lateral voxel size has also been studied.

Original language	English
Pages (from-to)	6958-6961
Number of pages	4
Journal	Journal of Nanoscience and Nanotechnology
Volume	10
Issue number	10
DOIs	https://doi.org/10.1166/jnn.2010.2975
State	Published - Oct 2010

Keywords

3D Microfabrication
Fluorene Derivatives
Three-Photon Absorption
Two-Photon Absorption

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10.1166/jnn.2010.2975

Cite this

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title = "Degenerate multi-photon properties of spirofluorene derivatives",

abstract = "Two- and three-photon absorption properties of the fluorene-based chromophores have been investigated. The two- and three-photon absorption cross-section are found to be increased with the strength of the electron donor groups in the order of N-ethylcarbazoyl (1), triphenylamino (2), and N,N-dibutylanilino (3) groups. This nonlinear absorption enhancement can be interpreted by the increase of intramolecular charge transfer facilitated by strong electron donors and the decreased detuning energy (ΔE). Furthermore, direct laser microfabrication by two-photon photopolymerization with compound 2 as a two-photon sensitizer was carried out. Laser exposure time-dependent lateral voxel size has also been studied.",

keywords = "3D Microfabrication, Fluorene Derivatives, Three-Photon Absorption, Two-Photon Absorption",

author = "Namchul Cho and Baldeck, \{Patrice L.\} and He, \{Guang S.\} and Hwang, \{Do Hoon\} and Prasad, \{Paras N.\} and Prem Prabhakaran and Kim, \{Tae Dong\} and Lee, \{Kwang Sup\}",

year = "2010",

month = oct,

doi = "10.1166/jnn.2010.2975",

language = "English",

volume = "10",

pages = "6958--6961",

journal = "Journal of Nanoscience and Nanotechnology",

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publisher = "American Scientific Publishers",

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}

TY - JOUR

T1 - Degenerate multi-photon properties of spirofluorene derivatives

AU - Cho, Namchul

AU - Baldeck, Patrice L.

AU - He, Guang S.

AU - Hwang, Do Hoon

AU - Prasad, Paras N.

AU - Prabhakaran, Prem

AU - Kim, Tae Dong

AU - Lee, Kwang Sup

PY - 2010/10

Y1 - 2010/10

N2 - Two- and three-photon absorption properties of the fluorene-based chromophores have been investigated. The two- and three-photon absorption cross-section are found to be increased with the strength of the electron donor groups in the order of N-ethylcarbazoyl (1), triphenylamino (2), and N,N-dibutylanilino (3) groups. This nonlinear absorption enhancement can be interpreted by the increase of intramolecular charge transfer facilitated by strong electron donors and the decreased detuning energy (ΔE). Furthermore, direct laser microfabrication by two-photon photopolymerization with compound 2 as a two-photon sensitizer was carried out. Laser exposure time-dependent lateral voxel size has also been studied.

AB - Two- and three-photon absorption properties of the fluorene-based chromophores have been investigated. The two- and three-photon absorption cross-section are found to be increased with the strength of the electron donor groups in the order of N-ethylcarbazoyl (1), triphenylamino (2), and N,N-dibutylanilino (3) groups. This nonlinear absorption enhancement can be interpreted by the increase of intramolecular charge transfer facilitated by strong electron donors and the decreased detuning energy (ΔE). Furthermore, direct laser microfabrication by two-photon photopolymerization with compound 2 as a two-photon sensitizer was carried out. Laser exposure time-dependent lateral voxel size has also been studied.

KW - 3D Microfabrication

KW - Fluorene Derivatives

KW - Three-Photon Absorption

KW - Two-Photon Absorption

UR - https://www.scopus.com/pages/publications/79955527156

U2 - 10.1166/jnn.2010.2975

DO - 10.1166/jnn.2010.2975

M3 - Article

AN - SCOPUS:79955527156

SN - 1533-4880

VL - 10

SP - 6958

EP - 6961

JO - Journal of Nanoscience and Nanotechnology

JF - Journal of Nanoscience and Nanotechnology

IS - 10

ER -

Degenerate multi-photon properties of spirofluorene derivatives

Abstract

Keywords

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