PKUSZ Center for Organic Semiconductors & Optoelectronics-Materials change the world !

Prof. Igor Perepichka, Bangor University, UK


“Fluorene-Type” Light-Emitting Conjugated Materials for Electronics and Photonics

Igor Perepichka

School of Chemistry, Bangor University, UK

   Following two decades of intense academic research, organic semiconductors have started to have an impact on commercial sector (light-emitting devices, field-effect transistors, organic solar cells, memory and logic devices, sensors and biosensors, electro- and photochromics, nanotechnologies, etc.) and nowadays they found many applications in various electronic devices.

   The lecture highlights some our studies on light-emitting conjugated materials, from small molecules to polymers. I will particularly highlight three themes of our research:

   (1) Fluorene-based light-emitting star-shaped conjugated oligomers: an increasing the dimensionality to 2D and applications in photonics;

   (2) Dibenzothiophene-S,S-dioxide as versatile electron deficient building block for light-emitting and electron transporting materials. Polymers with dual emission wor white-light PLED.

   (3) 4,5-Diazafluorene-based light-emitting materials:

       - electron deficient oligomers / polymers;

       - fluorescent sensors for metal cations;

       - cationic Ir(III) complexes for light-emitting electrochemical cells




Career History:

2010–  …         Professor of Chemistry, LCRI Chair; School of Chemistry, Bangor University, Bangor, UK.

2007–2010        Reader in Chemistry; School of Forensic and Investigative Sciences, University of Central Lancashire, Preston, UK.

2003–2007        Visiting Scientist / Senior Research Associate; Chemistry Department, Durham University, UK.

2001–2002        Invited Professor; University of Angers, France.

2000–2001        Visiting Scientist; CNRS–Angers, France.

1999                  Visiting Scientist, Comissariat á l’Énergie Atomique, CEA-Saclay, Gif-sur-Yvette, France.

1995–1997        Alexander von Humboldt Fellow; Institute of Organic Chemistry, Würzburg University, Germany.

1989–2007        Senior Research Scientist; National Academy of Sciences of Ukraine, Institute of Physical Organic and Coal Chemistry, Donetsk, Ukraine.

1983–1989        Junior Researcher then Research Scientist; Ukrainian Academy of Sciences, Institute of Physical Organic and Coal Chemistry of the, Donetsk, Ukraine.

1981–1983        Engineer then Senior Engineer; Ukrainian Academy of Sciences, Institute of Physical Organic and Coal Chemistry of the, Donetsk, Ukraine.


Education / Scientific Qualifications:

1999      "Senior Research Fellow" rank (Highest Attestation Commission of

1987             PhD in Organic Chemistry (National Academy of Sciences of Ukraine).

1981                MSc / Diploma in Chemical Engineering, Donetsk Technical University, Donetsk, Ukraine.


Honors and Awards:

2010      Low Carbon Research Institute Chair, UK

2002      NATO Expert Visitor Award (visit to Manchester University, UK).

2001    Chaire de Professeur Invité du PRIA-CCI (Pôle de Recherche et d'Innovation d’Angers, Chambre de Commerce et d'Industrie d'Angers), University of Angers, France.

1999    Senior Research Fellow (academic rank), Highest Attestation Commission of Ukraine.

Research Interests


We are working on organic molecular and polymeric materials for electronic, optoelectronic and photonic applications. These interdisciplinary researches include design, synthesis and characterisation of novel materials, their physical chemical studies to understand structure-property relationships and investigations of synthesised materials as active components in various electronic devices.

Current research interests encompass the development of functional p-conjugated systems with tailored electronic properties in view of applications in solar energy conversion, electronic and photonic devices, and nanosciences:

- novel methods of synthesis of conjugated p-functional systems;

- conductive, semiconductive and photoconductive p-conjugated materials (from small molecules to oligomers and polymers);

- charge, electron and energy transfer processes in p-systems;

- intermolecular charge transfer interactions in p-systems and materials with intramolecular charge transfer;

- electroactive p-functional systems, from strong electron acceptors to strong electron donors;

- organic nanomaterials, supramolecular architectures and self-organised systems;

- organic molecular and polymeric materials for light-emitting devices, photovoltaics (particularly, plastic solar cells), field-effect transistors, electrochromic devices, non-linear optics, nanotechnologies, sensors/biosensors etc.



> 100  journal papers;

5 book chapters;

1 edited book

> 20 patents;

> h- index 31, > 3000 citations