Synthesis of multi-porphyrin dendrimer as artificial light-harvesting antennae

Woo Dong Jang; Chi Hwa Lee; Myung Seok Choi; Makiko Osada

doi:10.1142/S1088424609000966

Synthesis of multi-porphyrin dendrimer as artificial light-harvesting antennae

Woo Dong Jang, Chi Hwa Lee, Myung Seok Choi, Makiko Osada

Department of Chemistry

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

17 Citations (Scopus)

Abstract

To mimic bacterial light-harvesting antenna complexes, a series of dendritic multiporphyrin arrays, nP_Zn-P_FB (n = 2, 4; cone-shaped dendrimers, n = 8, 16; star-shaped dendrimers), were synthesized and characterized by ¹H NMR and MALDI-TOF-MS spectroscopy. Photoinduced energy-transfer efficiency (Φ_ET) from peripheral Zn porphyrin (P_Zn) units to an inner core free-base porphyrin (P_FB) in the dendrimers was evaluated by fluorescence measurement. Both star- and cone-shaped multi-porphyrin arrays exhibited significantly high efficiency energy transfer from the photoexcited P_Zn units to the energy-accepting P_FB, where the star-shaped dendrimers, 8P _Zn-P_FB (94%) and 16P_Zn-P_FB (88%), had a slightly higher efficiency than those of the cone-shaped dendrimers, 2P_Zn-P_FB (92%) and 4P_Zn-P_FB (80%), respectively.

Original language	English
Pages (from-to)	787-793
Number of pages	7
Journal	Journal of Porphyrins and Phthalocyanines
Volume	13
Issue number	7
DOIs	https://doi.org/10.1142/S1088424609000966
Publication status	Published - 2009 Jul

Bibliographical note

Funding Information:
This research was supported by a grant from Korea Research Foundation (KRF-2007-313-D00225) and the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea. C.-H. Lee acknowledges a fellowship from the BK21 program from the Ministry of Education, Science and Technology.

All Science Journal Classification (ASJC) codes

Chemistry(all)

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title = "Synthesis of multi-porphyrin dendrimer as artificial light-harvesting antennae",

abstract = "To mimic bacterial light-harvesting antenna complexes, a series of dendritic multiporphyrin arrays, nPZn-PFB (n = 2, 4; cone-shaped dendrimers, n = 8, 16; star-shaped dendrimers), were synthesized and characterized by 1H NMR and MALDI-TOF-MS spectroscopy. Photoinduced energy-transfer efficiency (ΦET) from peripheral Zn porphyrin (PZn) units to an inner core free-base porphyrin (PFB) in the dendrimers was evaluated by fluorescence measurement. Both star- and cone-shaped multi-porphyrin arrays exhibited significantly high efficiency energy transfer from the photoexcited PZn units to the energy-accepting PFB, where the star-shaped dendrimers, 8P Zn-PFB (94%) and 16PZn-PFB (88%), had a slightly higher efficiency than those of the cone-shaped dendrimers, 2PZn-PFB (92%) and 4PZn-PFB (80%), respectively.",

author = "Jang, {Woo Dong} and Lee, {Chi Hwa} and Choi, {Myung Seok} and Makiko Osada",

note = "Funding Information: This research was supported by a grant from Korea Research Foundation (KRF-2007-313-D00225) and the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea. C.-H. Lee acknowledges a fellowship from the BK21 program from the Ministry of Education, Science and Technology.",

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N1 - Funding Information: This research was supported by a grant from Korea Research Foundation (KRF-2007-313-D00225) and the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea. C.-H. Lee acknowledges a fellowship from the BK21 program from the Ministry of Education, Science and Technology.

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N2 - To mimic bacterial light-harvesting antenna complexes, a series of dendritic multiporphyrin arrays, nPZn-PFB (n = 2, 4; cone-shaped dendrimers, n = 8, 16; star-shaped dendrimers), were synthesized and characterized by 1H NMR and MALDI-TOF-MS spectroscopy. Photoinduced energy-transfer efficiency (ΦET) from peripheral Zn porphyrin (PZn) units to an inner core free-base porphyrin (PFB) in the dendrimers was evaluated by fluorescence measurement. Both star- and cone-shaped multi-porphyrin arrays exhibited significantly high efficiency energy transfer from the photoexcited PZn units to the energy-accepting PFB, where the star-shaped dendrimers, 8P Zn-PFB (94%) and 16PZn-PFB (88%), had a slightly higher efficiency than those of the cone-shaped dendrimers, 2PZn-PFB (92%) and 4PZn-PFB (80%), respectively.

AB - To mimic bacterial light-harvesting antenna complexes, a series of dendritic multiporphyrin arrays, nPZn-PFB (n = 2, 4; cone-shaped dendrimers, n = 8, 16; star-shaped dendrimers), were synthesized and characterized by 1H NMR and MALDI-TOF-MS spectroscopy. Photoinduced energy-transfer efficiency (ΦET) from peripheral Zn porphyrin (PZn) units to an inner core free-base porphyrin (PFB) in the dendrimers was evaluated by fluorescence measurement. Both star- and cone-shaped multi-porphyrin arrays exhibited significantly high efficiency energy transfer from the photoexcited PZn units to the energy-accepting PFB, where the star-shaped dendrimers, 8P Zn-PFB (94%) and 16PZn-PFB (88%), had a slightly higher efficiency than those of the cone-shaped dendrimers, 2PZn-PFB (92%) and 4PZn-PFB (80%), respectively.

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Synthesis of multi-porphyrin dendrimer as artificial light-harvesting antennae

Abstract

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