Oligo(phenylenevinylene) hybrids and self-assemblies: versatile materials for excitation energy transfer
Oligo(phenylenevinylene)s (OPVs) are extensively investigated π-conjugated molecules that exhibit absorption and fluorescence in the UV-Vis spectral region, which can be widely tuned by chemical functionalisation and external control ( e.g. solvent, temperature, pH). Further modulation of the optoel...
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| Published in | Chemical Society reviews Vol. 43; no. 12; pp. 4222 - 4242 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
| Published |
England
21.06.2014
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| Subjects | |
| Online Access | Get full text |
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| Summary: | Oligo(phenylenevinylene)s (OPVs) are extensively investigated π-conjugated molecules that exhibit absorption and fluorescence in the UV-Vis spectral region, which can be widely tuned by chemical functionalisation and external control (
e.g.
solvent, temperature, pH). Further modulation of the optoelectronic properties of OPVs is possible by supramolecular aggregation, primarily driven by hydrogen bonding or π-stacking interactions. In recent years, extensive research work has been accomplished in exploiting the unique combination of the structural and electronic properties of OPVs, most of which has been targeted at the preparation of molecules and materials featuring photoinduced energy transfer. This review intends to offer an overview of the multicomponent arrays and self-assembled materials based on OPV which have been designed to undergo energy transfer by means of a thorough choice of excitation donor-acceptor partners. We present a few selected examples of photoactive dyads and triads containing organic moieties (
e.g.
fullerene, phenanthroline) as well as coordination compounds (Cu(
i
) complexes). We then focus more extensively on self-assembled materials containing suitably functionalised OPVs that lead to hydrogen bonded aggregates, helical structures, gels, nanoparticles, vesicles, mesostructured organic-inorganic hybrid films, functionalised nanoparticles and quantum dots. In most cases, these materials exhibit luminescence whose colour and intensity is related to the efficiency and direction of the energy transfer processes.
The engineering of the nanostructure of OPV based self-assemblies allows control of photoinduced energy transfer processes, leading to materials exhibiting tunable luminescence colours, including white. |
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| Bibliography: | Vakayil K. Praveen completed his PhD at University of Kerala (2007) under the guidance of A. Ajayaghosh (NIIST, India). He then worked as a postdoctoral fellow in the research group of Takuzo Aida, University of Tokyo, Japan, funded by the GCOE (2007) and JSPS (2009) programmes. In 2011, he moved to Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF), Italy, after qualifying for a European Commission Marie Curie International Incoming Fellowship (FP7), conducting his research under the supervision of Nicola Armaroli. His research interests are the synthesis, self-assembly and photophysical properties of π-conjugated molecules and their hybrids. Elisa Bandini joined the Italian National Research Council (CNR) as technical research assistant in 1986. She obtained her PhD at the University of Bologna in 2006, under the guidance of Mauro Panunzio. She participated in the Executive Protocol of S&T cooperation between China and Italy during 2006-2009. She has worked in several research projects funded by leading industries (Lek-Novartis, Polarchemie, Nicox). In 2012, she was promoted to staff researcher at CNR-ISOF, Bologna. Her research interests include the stereoselective synthesis of biologically active molecules, microwave chemistry and the design and synthesis of photo- and electroactive functional molecules. Choorikkat Ranjith obtained his PhD from the University of Calicut, Kerala (India) in 2008 with K. K. Vijayan. His research was focused on the synthesis and characterization of photoactive heterocyclic compounds with biological properties. He then worked in leading chemical companies (GE Global Research, Syngenta Biosciences Pvt. Ltd and Porus Laboratories Pvt. Ltd) as a research scientist. Presently he is a postdoctoral researcher at the Università degli Studi di Milano, Italy, in a project funded by ENI on organic molecules for DSSCs and polymer solar cells, in the group of Emanuela Licandro. His research interests are focussed on synthetic organic chemistry and photochemistry. Ayyappanpillai Ajayaghosh is a CSIR Outstanding Scientist at the NIIST Trivandrum, and Professor and Dean of Chemical Sciences, Academy of Scientific and Innovative Research, New Delhi, India. He has received several awards including the Shanti Swarup Bhatnagar Prize, Thomson Reuters Research Excellence-India Research Front Award and the Infosys Prize. He is a fellow of all three science academies of India. His research interests include supramolecular and macromolecular chemistry, organogels, functional dyes and fluorophores, photoresponsive materials, molecular probes for sensing and imaging. He is an associate editor of Physical Chemistry Chemical Physics and a board member of Chemistry-An Asian Journal and RSC Advances. Nicola Armaroli obtained his PhD in 1994. After post-doctoral work in the U. S. and Italy, in 1997 he joined the Italian National Research Council, becoming Research Director in 2007. His activity is concerned with the photochemistry/photophysics of molecular and supramolecular materials targeted at lighting technologies and solar energy conversion. He has published over 180 papers and 5 books and is a lecturer and consultant on issues of energy and natural resources. He is a member of the Editorial Board of Chemistry-A European Journal, an associate editor of Photochemical & Photobiological Sciences (RSC) and chairman of the Working Party on Chemistry and Energy of EuCheMS. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 ObjectType-Review-3 content type line 23 |
| ISSN: | 0306-0012 1460-4744 1460-4744 |
| DOI: | 10.1039/c3cs60406c |