Search: onr:"swepub:oai:lup.lub.lu.se:2eea3120-0853-47d8-bae7-a23d21cd9624" >
Structure-Property ...
Structure-Property Relationship of Perylene Bisimide Macrocycles Probed by Atomic Force Microscopy and Single-Molecule Fluorescence Spectroscopy
-
Lee, Ji-Eun (author)
-
Stepanenko, Vladimir (author)
-
Yang, Jaesung (author)
-
show more...
-
Yoo, Hyejin (author)
-
Schlosser, Felix (author)
-
Bellinger, Daniel (author)
-
Engels, Bernd (author)
-
- Scheblykin, Ivan (author)
- Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
-
Wuerthner, Frank (author)
-
Kim, Dongho (author)
-
show less...
-
(creator_code:org_t)
- 2013-05-14
- 2013
- English.
-
In: ACS Nano. - : American Chemical Society (ACS). - 1936-086X .- 1936-0851. ; 7:6, s. 5064-5076
- Related links:
-
http://dx.doi.org/10...
-
show more...
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- Properties of a series of acetylene-linked perylene bisimide (PBI) macrocycles with different ring size composed of three to six PBI dyes were investigated by atomic force microscopy (AFM) and single-molecule fluorescence spectroscopy in a condensed phase. it was demonstrated that the structures of PBI cyclic arrays (CNs, N = 3, 4,5, and 6) become distorted with increasing the ring size through molecular dynamic (MD) simulations (PM6-DH2 method) and AFM height images of CNs on highly ordered pyrolytic graphite (HOPG) surface. The MD simulations showed that only C5 and C6 rings are highly flexible molecules whose planarization goes along with a significant energetic penalty. Accordingly, both molecules did not show ordered adlayers on a HOPG surface. In contrast, C3 and C4 are far more rigid molecules leading to well-ordered hexagonal (C3) and rectangular (C4) 20 lattices. At the single-molecule level, we showed that the fluorescence properties of single CNs are affected by the structural changes. The fluorescence lifetimes of CNs became shorter and their distributions became broader due to the structural distortions with increasing the ring size. Furthermore, the CNs of smaller ring size exhibit a higher photostability and an efficient excitation energy transfer (EET) due to the more well-defined and planar structures compared to the larger CNs. Consequently, these observations provide evidence that not only PBI macrocycles are promising candidates for artificial light-harvesting systems, but also the photophysical properties of CNs are strongly related to the structural rigidity of CNs.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology -- Nano-technology (hsv//eng)
Keyword
- macrocycles
- light-harvesting system
- excitation energy transfer
- atomic
- force microscopy
- single-molecule spectroscopy
- molecular dynamics
- simulations
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
-
ACS Nano
(Search for host publication in LIBRIS)
To the university's database
- By the author/editor
-
Lee, Ji-Eun
-
Stepanenko, Vlad ...
-
Yang, Jaesung
-
Yoo, Hyejin
-
Schlosser, Felix
-
Bellinger, Danie ...
-
show more...
-
Engels, Bernd
-
Scheblykin, Ivan
-
Wuerthner, Frank
-
Kim, Dongho
-
show less...
- About the subject
-
- ENGINEERING AND TECHNOLOGY
-
ENGINEERING AND ...
-
and Nano technology
-
and Nano technology
- Articles in the publication
-
ACS Nano
- By the university
-
Lund University