Investigation and Control of Single Molecular Structures of Meso- Meso Linked Long Porphyrin Arrays

Sang Hyeon Lee; Sujin Ham; Seungsoo Nam; Naoki Aratani; Atsuhiro Osuka; Eunji Sim; Dongho Kim

doi:10.1021/acs.jpcb.8b00213

Investigation and Control of Single Molecular Structures of Meso- Meso Linked Long Porphyrin Arrays

Sang Hyeon Lee, Sujin Ham, Seungsoo Nam, Naoki Aratani, Atsuhiro Osuka, Eunji Sim, Dongho Kim

Department of Chemistry

Research output: Contribution to journal › Article

Abstract

We have investigated conformational structures of meso-meso linked porphyrin arrays (Zn) by single molecule fluorescence spectroscopy. Modulation depths (M values) were measured by excitation polarization fluorescence spectroscopy. The M value decreases from 0.85 to 0.46 as the number of porphyrin units increases from 3 to 128, indicating that longer arrays exhibit coiled structures. Such conformational changes depending on the length have been confirmed by coarse-grained simulation. The histograms of M values and traces of centroid position of emitting sites by localization microscopy showed that the structures of longer arrays changed to more stretched after solvent vapor annealing with tetrahydrofuran.

Original language	English
Pages (from-to)	5121-5125
Number of pages	5
Journal	Journal of Physical Chemistry B
Volume	122
Issue number	19
DOIs	https://doi.org/10.1021/acs.jpcb.8b00213
Publication status	Published - 2018 May 17

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1021/acs.jpcb.8b00213

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Lee, S. H., Ham, S., Nam, S., Aratani, N., Osuka, A., Sim, E., & Kim, D. (2018). Investigation and Control of Single Molecular Structures of Meso- Meso Linked Long Porphyrin Arrays. Journal of Physical Chemistry B, 122(19), 5121-5125. https://doi.org/10.1021/acs.jpcb.8b00213

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abstract = "We have investigated conformational structures of meso-meso linked porphyrin arrays (Zn) by single molecule fluorescence spectroscopy. Modulation depths (M values) were measured by excitation polarization fluorescence spectroscopy. The M value decreases from 0.85 to 0.46 as the number of porphyrin units increases from 3 to 128, indicating that longer arrays exhibit coiled structures. Such conformational changes depending on the length have been confirmed by coarse-grained simulation. The histograms of M values and traces of centroid position of emitting sites by localization microscopy showed that the structures of longer arrays changed to more stretched after solvent vapor annealing with tetrahydrofuran.",

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AU - Lee, Sang Hyeon

AU - Ham, Sujin

AU - Nam, Seungsoo

AU - Aratani, Naoki

AU - Osuka, Atsuhiro

AU - Sim, Eunji

AU - Kim, Dongho

PY - 2018/5/17

Y1 - 2018/5/17

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AB - We have investigated conformational structures of meso-meso linked porphyrin arrays (Zn) by single molecule fluorescence spectroscopy. Modulation depths (M values) were measured by excitation polarization fluorescence spectroscopy. The M value decreases from 0.85 to 0.46 as the number of porphyrin units increases from 3 to 128, indicating that longer arrays exhibit coiled structures. Such conformational changes depending on the length have been confirmed by coarse-grained simulation. The histograms of M values and traces of centroid position of emitting sites by localization microscopy showed that the structures of longer arrays changed to more stretched after solvent vapor annealing with tetrahydrofuran.

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