Tuning the Excimer Emission of Amphiphilic Platinum(II) Complexes Mediated by Phospholipid Vesicles / Shafikov Marsel Z.,Suleymanova Alfiya F.,Kozhevnikov Dmitry N.,Koenig Burkhard // INORGANIC CHEMISTRY. - 2017. - V. 56, l. 9. - P. 4885-4897.

ISSN/EISSN:

0020-1669 / 1520-510X

Type:

Article

Abstract:

Two new amphiphilic platinum(B) complexes, {[}Pt(2-(4-fluorophenyl)-5-(4-dodecyloxyphenyl)pyridine) (acac)]-(Pt-1) and {[}Pt(2-(4-dodecyloxyphenyl)-5-(thien-2-yl)-c-C-yclopentenepyridine) (acac)] (Pt-2), where-acac is acetylacetonate, were synthesized and characterized. Apart from,conventional phosphorescence of single molecules (ME-monomer emission), complexes Pt-1 and Pt-2 also exhibit excimer emission (BB) when embedded into phospholipid vesicles, that is assigned to emissive Pt-Pt excimers. The BE intensity. in-vesicular media appeared to depend on the viscosity of the vesicles and the concentration of the embedded,complex. Differences in the EE properties of complexes Pt-1 and Pt-2 are Correlated with the energies of the pi-character frontier orbitals defined by the design of the cyclometalating phenylpyridine ligand. Higher energies of the frontier pi-orbitals (HOMO and LUMO) naturally promote stronger pi=pi interactions, thus obstructing the Pt-II-Pt-II interaction.

Author keywords:

ALKYNYLPLATINUM(II) TERPYRIDYL COMPLEXES; INFRARED NIR EMISSION; INTRAMOLECULAR EXCIMER; CYCLOMETALATED PLATINUM(II); PHASE-TRANSITIONS; PHOSPHORESCENCE EMISSION; ELECTRONIC SPECTROSCOPY; 2ND-HARMONIC GENERATION; IRIDIUM(III) COMPLEXES; LUMINESCENT PROPERTIES

DOI:

10.1021/acs.inorgchem.6b03100

Web of Science ID:

ISI:000400633200015

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAY 1
Publisher	AMER CHEMICAL SOC
Address	1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Language	English
EISSN	1520-510X
Keywords-Plus	ALKYNYLPLATINUM(II) TERPYRIDYL COMPLEXES; INFRARED NIR EMISSION; INTRAMOLECULAR EXCIMER; CYCLOMETALATED PLATINUM(II); PHASE-TRANSITIONS; PHOSPHORESCENCE EMISSION; ELECTRONIC SPECTROSCOPY; 2ND-HARMONIC GENERATION; IRIDIUM(III) COMPLEXES; LUMINESCENT PROPERTIES
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear
Author-Email	shafikoff@gmail.com burkhard.koenig@chemie.uni-regensburg.de
ResearcherID-Numbers	Koenig, Burkhard/A-1362-2009
ORCID-Numbers	Koenig, Burkhard/0000-0002-6131-4850 Suleymanova, Alfiya/0000-0003-3064-5427 Shafikov, Marsel/0000-0003-0495-0364
Funding-Acknowledgement	German Academic Exchange Service (Deutscher Akademischer Austauschdienst - DAAD)
Funding-Text	M.Z.S. is grateful to the German Academic Exchange Service (Deutscher Akademischer Austauschdienst - DAAD) for financial support.
Number-of-Cited-References	97
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	2
Journal-ISO	Inorg. Chem.
Doc-Delivery-Number	ET9NC