Cooperative Enhancement of Two-Photon Absorption in Multi-branched Structures

Sung Jae Chung; Kyoung Soo Kim; Tzu Chau Lin; Guang S. He; Jacek Swiatkiewicz; Paras N. Prasad

doi:10.1021/jp992846z

Cooperative Enhancement of Two-Photon Absorption in Multi-branched Structures

Sung Jae Chung, Kyoung Soo Kim, Tzu Chau Lin, Guang S. He, Jacek Swiatkiewicz, Paras N. Prasad

Department of Chemistry

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

477 Scopus citations

Abstract

Recent reports of molecular structures with considerably enhanced two-photon absorption cross-section have generated considerable interest in this phenomenon from both fundamental and applications perspectives. In this letter, we report cooperative enhancement of two-photon absorption in multi-branched structures which may lead to new design criteria for development of highly efficient two-photon materials. The multi-branched structures were synthesized using coupling of two and three two-photon active asymmetric donor - acceptor chromophores linked together by a common amine group. The two-photon cross-sections measured both with nanosecond and femtosecond pulses show that the value for the trimer is more than six times larger than that for the monomer, and not just three times larger as expected from the number density increase.

Original language	English
Pages (from-to)	10741-10745
Number of pages	5
Journal	Journal of Physical Chemistry B
Volume	103
Issue number	49
DOIs	https://doi.org/10.1021/jp992846z
State	Published - 9 Dec 1999

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abstract = "Recent reports of molecular structures with considerably enhanced two-photon absorption cross-section have generated considerable interest in this phenomenon from both fundamental and applications perspectives. In this letter, we report cooperative enhancement of two-photon absorption in multi-branched structures which may lead to new design criteria for development of highly efficient two-photon materials. The multi-branched structures were synthesized using coupling of two and three two-photon active asymmetric donor - acceptor chromophores linked together by a common amine group. The two-photon cross-sections measured both with nanosecond and femtosecond pulses show that the value for the trimer is more than six times larger than that for the monomer, and not just three times larger as expected from the number density increase.",

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AU - Chung, Sung Jae

AU - Kim, Kyoung Soo

AU - Lin, Tzu Chau

AU - He, Guang S.

AU - Swiatkiewicz, Jacek

AU - Prasad, Paras N.

PY - 1999/12/9

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N2 - Recent reports of molecular structures with considerably enhanced two-photon absorption cross-section have generated considerable interest in this phenomenon from both fundamental and applications perspectives. In this letter, we report cooperative enhancement of two-photon absorption in multi-branched structures which may lead to new design criteria for development of highly efficient two-photon materials. The multi-branched structures were synthesized using coupling of two and three two-photon active asymmetric donor - acceptor chromophores linked together by a common amine group. The two-photon cross-sections measured both with nanosecond and femtosecond pulses show that the value for the trimer is more than six times larger than that for the monomer, and not just three times larger as expected from the number density increase.

AB - Recent reports of molecular structures with considerably enhanced two-photon absorption cross-section have generated considerable interest in this phenomenon from both fundamental and applications perspectives. In this letter, we report cooperative enhancement of two-photon absorption in multi-branched structures which may lead to new design criteria for development of highly efficient two-photon materials. The multi-branched structures were synthesized using coupling of two and three two-photon active asymmetric donor - acceptor chromophores linked together by a common amine group. The two-photon cross-sections measured both with nanosecond and femtosecond pulses show that the value for the trimer is more than six times larger than that for the monomer, and not just three times larger as expected from the number density increase.

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Cooperative Enhancement of Two-Photon Absorption in Multi-branched Structures

Abstract

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