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Synthesis, spectroscopic characterization, thermal and luminescent properties of new organosulfur-functionalized platinum(II) bis (alkenylarylalkynyl) complexes

Title data

Rahman, Md. Mostafizur ; Younus, Muhammad ; Naher, Masnun ; Masud, Mostafa Kamal ; Nomoto, Akihiro ; Ogawa, Akiya ; Rudnick, Alexander ; Köhler, Anna:
Synthesis, spectroscopic characterization, thermal and luminescent properties of new organosulfur-functionalized platinum(II) bis (alkenylarylalkynyl) complexes.
In: Journal of Organometallic Chemistry. Vol. 818 (2016) . - pp. 185-194.
ISSN 0022-328X
DOI: https://doi.org/10.1016/j.jorganchem.2016.06.006

Abstract in another language

A series of organosulfur-functionalized trans-platinum(II) bis(alkenylarylalkynyl) complexes, having one tolylthio moiety in each alkenyl backbone with general formula trans-[(PEt3)2Pt{Ctriple bond; length of mdashC-Ar-CHdouble bond; length as m-dashCH(SC6H4single bondCH3)}2], (2a–2d), (where, Ar = phenylene, biphenylene, 2,5-dimethylphenylene, and 2,5-dimethoxyphenylene) were synthesized in good to excellent yields with good regioselectivity. As compared to the absorption band of trans-platinum(II) bis(alkynylarylalkynyl) complexes, we found that the position of the lowest energy absorption bands in the trans-platinum(II) bis(alkenylarylalkynyl) complexes were red-shifted, after the functionalization of the trans-platinum(II) bis(alkynylarylalkynyl) complexes with arylthiol. For all trans-platinum(II) complexes, the lowest energy absorption bands in the UV/Vis spectra, in chloroform solution, at room temperature, were observed in the range 362–394 nm, and under excitation at the wavelength of the absorption maximum exhibited the emission peak maximum at room temperature in the range 401–426 nm. The newly synthesized complexes are not exhibited phosphorescence at room temperature but are exhibited at low temperature, 77 K. All the new platinum(II) complexes have been fully characterized by spectroscopic analysis as well as elemental analysis, and the trans square-planar arrangement at the platinum centre has been confirmed by single-crystal X-ray diffraction study of complex 2a.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Alkenylarylalkynyl complex; Platinum; Sulfur; Functionalization; Photoluminescence; Single crystal
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie - Univ.-Prof. Dr. Anna Köhler
Graduate Schools > Bayreuth Graduate School of Mathematical and Natural Sciences (BayNAT) > Photophysics of Synthetic and Biological Multichromophoric Systems
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie
Graduate Schools
Graduate Schools > Bayreuth Graduate School of Mathematical and Natural Sciences (BayNAT)
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 14 Sep 2016 06:53
Last Modified: 14 Sep 2016 06:53
URI: https://eref.uni-bayreuth.de/id/eprint/34700