English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Stacking Geometries of Early Protoporphyrin IX Aggregates Revealed by Gas-Phase Infrared Spectroscopy

Seo, J., Jang, J., Warnke, S., Gewinner, S., Schöllkopf, W., & Helden, G. v. (2016). Stacking Geometries of Early Protoporphyrin IX Aggregates Revealed by Gas-Phase Infrared Spectroscopy. Journal of the American Chemical Society, 138(50), 16315-16321. doi:10.1021/jacs.6b08700.

Item is

Files

show Files
hide Files
:
jacs.6b08700.pdf (Publisher version), 2MB
Name:
jacs.6b08700.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
2016
Copyright Info:
-

Locators

show

Creators

show
hide
 Creators:
Seo, Jongcheol1, Author              
Jang, Jinhyeong2, Author
Warnke, Stephan1, Author              
Gewinner, Sandy1, Author              
Schöllkopf, Wieland1, Author              
Helden, Gert von1, Author              
Affiliations:
1Molecular Physics, Fritz Haber Institute, Max Planck Society, ou_634545              
2Department of Chemistry, School of Natural Science, Ulsan National Institute of Science and Technology, Ulsan 44919, South Korea, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: Amphiphilic porphyrins are of great interest in the field of supramolecular chemistry because they can be fabricated into highly ordered architectures that are stabilized by π–π stacking of porphine rings as well as by non-covalent interactions between their hydrophilic substituents. Protoporphyrin IX (PPIX) has two flexible propionic acid tails and is one of the most common amphiphilic porphyrins. However, unlike other PPIX analogues, PPIX does not form stable extended nanostructures, and the reason for this is still not understood. Here, we employ ion mobility mass spectrometry in combination with infrared multiple photon dissociation spectroscopy to investigate early aggregates of PPIX. The ion mobility results show that growth occurs via single-stranded face-to-face stacking of PPIX. From the infrared spectroscopy on well-defined aggregates, it can be concluded that pairing of the carboxylic acid groups of the tails is a stabilizing element and that such a pairing occurs across a third residue from residue n to residue n+2. The tetramer appears to be especially stable, because all of its propionic acid tails are optimally paired and no free tails to promote further growth are present, which possibly prevents PPIX from forming larger, well-ordered assemblies.

Details

show
hide
Language(s):
 Dates: 2016-08-192016-11-282016-12-21
 Publication Status: Published in print
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/jacs.6b08700
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of the American Chemical Society
  Other : J. Am. Chem. Soc.
  Abbreviation : JACS
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 138 (50) Sequence Number: - Start / End Page: 16315 - 16321 Identifier: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870