Multibranched and dendritic organic materials with high two-photon absorption activity

Seung Wan Kang; Joo Yeon Kim; Ran Hee Kim; Bong Keun So; Kwang Sup Lee; In Wook Hwang; Dongho Kim; Paul Fleitz; Hong Bo Sun; Satoshi Kawata

doi:10.1117/12.582709

Multibranched and dendritic organic materials with high two-photon absorption activity

Seung Wan Kang, Joo Yeon Kim, Ran Hee Kim, Bong Keun So, Kwang Sup Lee, In Wook Hwang, Dongho Kim, Paul Fleitz, Hong Bo Sun, Satoshi Kawata

Department of Chemistry

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

A three-dimensional micro-object was fabricated by two-photon initiated photopolymerization (TPIP) of soft-resin with the efficient two-photon absorbing multi-branched chromophore, EPS-3arm, which possesses high two-photon absorption cross-section of 5.21×10^-47 cm⁴s/photons at 700 nm. The structural stability of the fabricated micro-objects could be achieved with aid of sol-gel process. The two-photon absorbing stilbazolium-cored dendrimer was also synthesized. The stillbazolium chromophore was covalently linked with the dendrimer chains so as to restrict free conformation motion. The hindered molecular twisting motion of the stilbazolium dye within the dendrimer is responsible for 5 to 16 times of enhancement in fluorescence emission along with the increased emission lifetime. The steady-state and time-resolved fluorescence emission study of the solid-state film indicate an efficient site-isolation and restriction of conformation motion of the active two-photon chromophore.

Original language	English
Article number	01
Pages (from-to)	1-8
Number of pages	8
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5621
DOIs	https://doi.org/10.1117/12.582709
Publication status	Published - 2004
Event	Optical Materials in Defence Systems Technology - London, United Kingdom Duration: 2004 Oct 25 → 2004 Oct 27

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.582709

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title = "Multibranched and dendritic organic materials with high two-photon absorption activity",

abstract = "A three-dimensional micro-object was fabricated by two-photon initiated photopolymerization (TPIP) of soft-resin with the efficient two-photon absorbing multi-branched chromophore, EPS-3arm, which possesses high two-photon absorption cross-section of 5.21×10-47 cm4s/photons at 700 nm. The structural stability of the fabricated micro-objects could be achieved with aid of sol-gel process. The two-photon absorbing stilbazolium-cored dendrimer was also synthesized. The stillbazolium chromophore was covalently linked with the dendrimer chains so as to restrict free conformation motion. The hindered molecular twisting motion of the stilbazolium dye within the dendrimer is responsible for 5 to 16 times of enhancement in fluorescence emission along with the increased emission lifetime. The steady-state and time-resolved fluorescence emission study of the solid-state film indicate an efficient site-isolation and restriction of conformation motion of the active two-photon chromophore.",

keywords = "3D sol-gel patterning, Dendrimer, Lithographic microfabrication, Multibranched system, Site-isolation, Two-photon absorption",

author = "Kang, {Seung Wan} and Kim, {Joo Yeon} and Kim, {Ran Hee} and So, {Bong Keun} and Lee, {Kwang Sup} and Hwang, {In Wook} and Dongho Kim and Paul Fleitz and Sun, {Hong Bo} and Satoshi Kawata",

year = "2004",

doi = "10.1117/12.582709",

language = "English",

volume = "5621",

pages = "1--8",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

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note = "Optical Materials in Defence Systems Technology ; Conference date: 25-10-2004 Through 27-10-2004",

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TY - JOUR

T1 - Multibranched and dendritic organic materials with high two-photon absorption activity

AU - Kang, Seung Wan

AU - Kim, Joo Yeon

AU - Kim, Ran Hee

AU - So, Bong Keun

AU - Lee, Kwang Sup

AU - Hwang, In Wook

AU - Kim, Dongho

AU - Fleitz, Paul

AU - Sun, Hong Bo

AU - Kawata, Satoshi

PY - 2004

Y1 - 2004

N2 - A three-dimensional micro-object was fabricated by two-photon initiated photopolymerization (TPIP) of soft-resin with the efficient two-photon absorbing multi-branched chromophore, EPS-3arm, which possesses high two-photon absorption cross-section of 5.21×10-47 cm4s/photons at 700 nm. The structural stability of the fabricated micro-objects could be achieved with aid of sol-gel process. The two-photon absorbing stilbazolium-cored dendrimer was also synthesized. The stillbazolium chromophore was covalently linked with the dendrimer chains so as to restrict free conformation motion. The hindered molecular twisting motion of the stilbazolium dye within the dendrimer is responsible for 5 to 16 times of enhancement in fluorescence emission along with the increased emission lifetime. The steady-state and time-resolved fluorescence emission study of the solid-state film indicate an efficient site-isolation and restriction of conformation motion of the active two-photon chromophore.

AB - A three-dimensional micro-object was fabricated by two-photon initiated photopolymerization (TPIP) of soft-resin with the efficient two-photon absorbing multi-branched chromophore, EPS-3arm, which possesses high two-photon absorption cross-section of 5.21×10-47 cm4s/photons at 700 nm. The structural stability of the fabricated micro-objects could be achieved with aid of sol-gel process. The two-photon absorbing stilbazolium-cored dendrimer was also synthesized. The stillbazolium chromophore was covalently linked with the dendrimer chains so as to restrict free conformation motion. The hindered molecular twisting motion of the stilbazolium dye within the dendrimer is responsible for 5 to 16 times of enhancement in fluorescence emission along with the increased emission lifetime. The steady-state and time-resolved fluorescence emission study of the solid-state film indicate an efficient site-isolation and restriction of conformation motion of the active two-photon chromophore.

KW - 3D sol-gel patterning

KW - Dendrimer

KW - Lithographic microfabrication

KW - Multibranched system

KW - Site-isolation

KW - Two-photon absorption

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DO - 10.1117/12.582709

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VL - 5621

SP - 1

EP - 8

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

M1 - 01

T2 - Optical Materials in Defence Systems Technology

Y2 - 25 October 2004 through 27 October 2004

ER -

Multibranched and dendritic organic materials with high two-photon absorption activity

Abstract

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