Sylvain Achelle

Associate professor

Sylvain Achelle


Email : sylvain [dot] achelle [at] univ-rennes1 [dot] fr

Phone : +33 (0) 2 96 46 94 48

Office number : Lannion


2004: “Diplôme d’ingénieur” at Institut National des Sciences Appliquées of Rouen (INSA-Rouen)

2004: Post-graduate diploma before the Ph.D., specialization in organic chemistry (DEA Chimie Fine) at the Science Faculty, University of Rouen.

2007: Ph. D. In Organic Chemistry, INSA-Rouen. Supervisors: Prof. N. Plé and Prof A. Turck. “Synthesis and research of new oligomers with diazine moities: applications as liquid crystals, fluorescent materials and potential NLO materials.”

2014: Accreditation to direct research (HDR), University of Rennes 1.

Professional experiences

2007: ATER position (lecturer) University of Rouen

2008: Post doctoral stay at University of Castilla la Mancha, Ciudad Real, Spain (12 months). Supervisor: Prof. J. Rodríguez-López. “Synthesis of artificial opal containing a polyphenylenevinylene dendritic structure”

2009/2010: Post doctoral stay at Institut Curie, Orsay, France (18 months) Supervisors: Dr. M.-P. Teulade-Fichou and Dr. P. Maillard. “Synthesis, photophysical and photobiological study of mono- and biphotonic glycoconjugated photosensitizers "

Since 2010: Associate professor at IUT Lannion, UMR 6226 OMC team

Full time CNRS Researcher (Délégation CNRS): 09/2014-08/2015

Invited Professor:

  • Univ. Castilla-la-Mancha, Spain (2015, 9 weeks).
  • Univ. Pardubice, Czech Republic (2015, 1 week)



My research activities concern the design, synthesis and photophysical properties of azaheterocyclic organic and organometallic molecular materials for optics.

More specifically my projects concerns:

- The developpment of a large library of diazine fluorophores.

- The developpment of NLO chromophores based on diazine and /or pyranylidene heterocyclic fragments.

- White light emission based on controled protonation of azaheterocycles.


Inside ISCR (outside Lannion):

- Dr Claudine Katan & Dr Arnaud Fihey: TD-DFT calculation, theoretical studies of emission properties.

- Prof Jean-Yves Saillard & Dr Samia Kahlal: TD-DFT calculation.

- Dr Julien Boixel: emission properties of Pt complexes.


National collaborations

- Dr Alberto Barsella & Dr Loic Mager: IPCMS, UMR7504, Université de Stasbourg: EFISH measurement, characterization of 2nd order NLO manterials.

- Dr Jean-Pierre Malval: IS2M, UMR7361, Université de Haute-Alsace: Two-photon absorption, nitroaromatic sensors.

- Dr. Julien Massue: ICPEES, UMR7515, Université de Strasbourg, ESIPT chromophores

- Dr Joël Charrier, Dr Loïc Bodiou: Institut FOTON, UMR 6082, Université de Rennes: Incorporation de chromophores ONL dans des guides d'onde


International collaborations:

- Prof Julián Rodríguez-López: Univ Castilla-la Mancha, Spain: white light emission by controled protonation of azaheterocycles, library of diazine chromophores.

- Prof Filip Bureš, Dr Milan Klikar, Dr Jiří Tydlitát, Dr Oldřich Pytela: Univ Pardubice, Czech Republic: Experimental and theoretical studies of push-pull chromophores for NLO, white light emission by controled protonation of azaheterocycles, library of diazine chromophores.

- Prof Mihalis Fakis: Univ Patras, Greece: Time resolved emission studies

- Prof Emiliya V. Nosova, Dr Egor V. Verbistkiy: Ural Federal University, Russia: Library of diazine chromophores, NLO chromophores.

- Prof Zeynel Seferoglu, Gazi Univ. Turkey: NLO chromophores.

Other activities

Ph D supervisor :

- Raphaël Durand (2015-2018, MESR funding)

- Michaela Feckova (2017-2021, ARED funding, cotutuelle with Univ Pardubice, Czech Rep)

- Mariia Hruzd (2019-2022, ARED/CD22 funding)

Member of 6 Thesis commitees outside University of Rennes 1 (referee for four of them) 

Associate Editor for Dyes & Pigments journal (300 manuscripts handled per year)

Editorial board member of Targets in Heterocyclic Systems series of books.

Referee (around 50 reviews per year) for various international journals including: Chem. Commun., J. Mater. Chem. C, J. Org. Chem., Adv. Mater., Chem. Eur.. J.; .Chem. Asian J. and Org Biomol Chem.

Laboratory evaluation and project expert:

- Metodika program, Czech Republic,

- South Africa’s National Research Foundation

- Fondecyt, Chile

5 most significant publications in recent years

  1. Tuning the photophysical properties of push-pull azaheterocyclic chromophores by protonation: a brief overview of a French-Spanish-Czech project. S. Achelle, J. Rodríguez-López, F. Bureš, F. Robin-le Guen, Chem. Rec. 2020, 20, 440.

  2. Push-pull (iso)quinoline chromophores: synthesis, photophysical properties, and use for white-light emission.Z. Ibrahim Mohamed Allaoui, E. le Gall, A. Fihey, R. Plaza-Pedroche, C. Katan, F. Robin-le Guen, J. Rodríguez-López, S. Achelle, Chem. Eur. J. 2020, 26, 8153.

  3. Luminescence behavior of protonated methoxy-substituted diazine derivatives: toward white light emission. S. Achelle, J. Rodríguez-López, C. Katan, F. Robin-le Guen J. Phys. Chem. C 2016, 120, 26986.

  4. Photophysics of 9,9-dimethylacridan-substituted phenylstyrylpyrimidines exhibiting long-lived intramolecular charge-transfer fluorescence and aggregation-induced emission characteristics. M. Feckova,  I. K. Kalis, T. Roisnel, P. le Poul, O. Pytela, M. Klikar, F. Robin-le Guen, F. Bure, M. Fakis, S. Achelle, Chem. Eur. J. 2021, doi: 10.1002/cem.202004328.

  5. Porosity-driven large amplitude dynamics for nitroaromatic sensing with fluorescent films of alternating D-pi-A molecules, J. P. Malval, M. Cranney, S. Achelle; H. Akdas-Kiliç, J.-L. Fillaut, N. Cabon, F. Robin-le Guen, O. Soppera, Y. Molard, Chem Commun. 2019, 55, 14331.

Publications referenced in HAL since 2006