|Title:||Synthesis, Characterisation, Photophysical and Interfacial Electron Transfer Studies to TiO 2 Nanoparticle of Novel Heteroleptic Ruthenium Terpyridyl Complex|
|Abstract:||In this context we have synthesised and characterised a novel heteroleptic [Ru (4â€²-(4 N,N dimethyl phenyl) 2,2â€²6â€™:2â€²â€²-terpyridine) 4â€²-(4Carboxyphenyl)-2,2â€²6â€™:2â€²â€²-terpyridine]2PF 6 complex [PR2]Â with prolonged excited-state lifetime Ï„ of6.37 ns which is 25 fold more than the homologous [Ru(tpy) 2 ](PF 6 ) 2 . The appropriate selection of ligand moieties is employed for engineering the energy level of 3 MLCTand 3 MC excited states to restrain the nonradiativeemissionfromthermally populated 3 MC excited state.This task is well judged by counter balancing effect ofStrong Ïƒ- donor and Ï€- acceptor substituent attached to terpyridyl moiety. This title complex exhibits an oxidation potential (E 1/2 ) of 1.28 V vs Ag/AgCl. Thetime-resolved absorption spectroscopy employed for interfacial charge transfer study reveals strong coupling in title complexâ€“semiconducting TiO 2 nanoparticle system which facilitates pulse width limited (<100 fs) ultrafast single exponential electron injection. Â© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim|
|Citation:||ChemistrySelect (2016), 1(13): 3777-3783|
|Keywords:||Interfacial Electron Transfer|
TiO 2 .
|Author Scopus IDs:||56681873300|
|Author Affiliations:||Rana, P.J.S., Department of Chemistry, Indian Institute of Technology, Roorkee, 247667, India|
Kundi, V., Department of Chemistry, Indian Institute of Technology, Roorkee, 247667, India
Singh, P., Department of Chemistry, Indian Institute of Technology, Roorkee, 247667, India
Kar, P., Department of Chemistry, Indian Institute of Technology, Roorkee, 247667, India
|Funding Details:||We thank Prof. Pradipta Banerjee, Director, Indian Institute of Technology Roorkee, India for his constant support and encouragement. The authors would also like to thank Prof Pratik Sen, Department of Chemistry, IIT Kanpur for performing Transient absorption studies. P.K gratefully acknowledges the Council of Scientific & Industrial Research CSIR (01(2796)/14/EMR-II), New Delhi, India for financial support. PJSR and PS acknowledge MHRD, India, for their junior research fellowship.|
|Corresponding Author:||Kar, P.; Department of Chemistry, Indian Institute of TechnologyIndia; email: firstname.lastname@example.org|
|Appears in Collections:||Journal Publications [CY]|
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