Staff profile

Dr Fernando Dias, PhD

Research Associate in the Department of Physics

Telephone: +44 (0) 191 33 43590

Room number: 243

Member of the Centre for Materials Physics

(email at f.m.b.dias@durham.ac.uk)

Group: Organic Electroactive Materials (OEM)

Intergroup: Materials Properties

I am a Research Fellow in the Centre for Materials Physics, and a member of the Organic Electroactive Materials group since June 2003. My work is focused on the study of the photophysics of organic molecules, and my current research interests are: the investigation of the mechanisms of photoinduced charge generation in organic solar cells, the development of photo-responsive materials made of photochromic molecules and polymers, and the investigation of dynamic conformational changes in biomolecules.

Research Groups

Centre for Materials Physics

Publications

Journal papers: academic

Snedden, E. , Monkman, A.P. & Dias, F.B. (2012). Photophysics of Charge Generation in Organic Photovoltaic Materials: Kinetic Studies of Geminate and Free Polarons in a Model Donor/Acceptor System. Journal of Physical Chemistry C 116(1): 86-97.
Palsson, LO, Nehls, BS, Galbrecht, F, Coombs, BA, Dias, FB, Farrell, T, Scherf, U & Monkman, AP (2010). Synthesis, Excited State Dynamics, and Optical Characteristics of Oligophenyl-Based Swivel Cruciforms in Solution and Solid State. The Journal Of Physical Chemistry B 114(40): 12765-12776.
Li, HY, Batsanov, AS, Moss, KC, Vaughan, HL, Dias, FB, Kamtekar, KT, Bryce, MR & Monkman, AP (2010). The interplay of conformation and photophysical properties in deep-blue fluorescent oligomers. Chemical Communications 46(26): 4812-4814.
Moss, KC, Bourdakos, KN, Bhalla, V, Kamtekar, KT, Bryce, MR, Fox, MA, Vaughan, HL, Dias, FB & Monkman, AP (2010). Tuning the Intramolecular Charge Transfer Emission from Deep Blue to Green in Ambipolar Systems Based On Dibenzothiophene S,S-Dioxide by Manipulation of Conjugation and Strength of the Electron Donor Units. Journal of Organic Chemistry 75(20): 6771-6781.
Postacchini, BB, Zucolotto, V, Dias, FB, Monkman, A & Oliveira, ON (2009). Energy Transfer in Nanostructured Films Containing Poly(p-phenylene vinylene) and Acceptor Species. Journal Of Physical Chemistry C 113(23): 10303-10306.
Dias, FB, Kamtekar, KT, Cazati, T, Williams, G, Bryce, MR & Monkman, AP (2009). Exciton Diffusion in Polyfluorene Copolymer Thin Films: Kinetics, Energy Disorder and Thermally Assisted Hopping. ChemPhysChem 10(12): 2096-2104.
King, SM, Perepichka, II, Perepichka, IF, Dias, FB, Bryce, MR & Monkman, AP (2009). Exploiting a Dual-Fluorescence Process in Fluorene-Dibenzothiophene-S,S-dioxide Co-Polymers to Give Efficient Single Polymer LEDs with Broadened Emission. Advanced Functional Materials 19(4): 586-591.
Brendel, CM, Dias, FB, Saragi, TPI, Monkman, AP & Salbeck, J (2009). Photophysical properties of the asymmetrically substituted spirobifluorenes spiro-DPO and spiro-MeO-DPO. Physica Status Solidi A-applications And Materials Science 206(12): 2715-2722.
Burrows, HD, Fonseca, SM, Dias, FB, de Melo, JS, Monkman, AP, Scherf, U & Pradhan, S (2009). Singlet Excitation Energy Harvesting and Triplet Emission in the Self-Assembled System Poly{1,4-phenylene-[9,9-bis(4-phenoxy-butylsulfonate)]fluorene-2,7-diyl} copolymer/tris(bipyridyl)ruthenium(II) in Aqueous Solution. Advanced Materials 21(10-11): 1155-1159
Pinto, SM, Burrows, HD, Pereira, MM, Fonseca, SM, Dias, FB, Mallavia, R & Tapia, MJ (2009). Singlet-Singlet Energy Transfer in Self-Assembled Systems of the Cationic Poly{9,9-bis[6-N,N,N-trimethylammonium)hexyl]fluorene-co-1,4-phenylene} with Oppositely Charged Porphyrins. Journal Of Physical Chemistry B 113(50): 16093-16100.
Pinto, Sara M, Burrows, Hugh D, Pereira, Mariette M, Fonseca, Sofia M, Dias, Fernando B, Mallavia, Ricardo & Tapia, Maria J (2009). Singlet-singlet energy transfer in self-assembled systems of the cationic poly{9,9-bis[6-N,N,N-trimethylammonium)hexyl]fluorene-co-1,4-phenylene} with oppositely charged porphyrins. J Phys Chem B 113(50): 16093-100.
Bright, DW, Dias, FB, Galbrecht, F, Scherf, U & Monkman, AP (2009). The Influence of Alkyl-Chain Length on Beta-Phase Formation in Polyfluorenes. Advanced Functional Materials 19(1): 67-73.
Dias, FB, King, S, Monkman, AP, Perepichka, II, Kryuchkov, MA, Perepichka, IF & Bryce, MR (2008). Dipolar stabilization of emissive singlet charge transfer excited states in polyfluorene copolymers. Journal Of Physical Chemistry B 112(21): 6557-6566.
King, SM, Matheson, R, Dias, FB & Monkman, AP (2008). Enhanced triplet formation by twisted intramolecular charge-transfer excited states in conjugated oligomers and polymers. Journal Of Physical Chemistry B 112(27): 8010-8016.
Narayanan, SS, Sarkar, R, Sinha, SS, Dias, F, Monkman, A & Pal, SK (2008). Luminescence depolarization dynamics of quantum dots: Is it hydrodynamic rotation or exciton migration?. Journal Of Physical Chemistry C 112(9): 3423-3428.
Monkman, A, Rothe, C, King, S & Dias, F (2008). Polyfluorene photophysics. Polyfluorenes 212: 187-225.
Sarkar, R, Narayanan, SS, Palsson, LO, Dias, F, Monkman, A & Pal, SK (2007). Direct conjugation of semiconductor nanocrystals to a globular protein to study protein-folding intermediates. Journal Of Physical Chemistry B 111: 12294-12298.
Knaapila, M, Dias, FB, Garamus, VM, Almasy, L, Torkkeli, M, Leppanen, K, Galbrecht, F, Preis, E, Burrows, HD, Scherf, U & Monkman, AP (2007). Influence of side chain length on the self-assembly of hairy-rod poly(9,9-dialkylfluorene)s in the poor solvent methylcyclohexane. Macromolecules 40(26): 9398-9405.
Bettington, S, Tavasli, M, Bryce, MR, Batsanov, AS, Thompson, AL, Al Attar, HA, Dias, FB & Monkman, AP (2006). Bridged diiridium complexes for electrophosphorescent OLEDs: synthesis, X-ray crystal structures, photophysics, and devices. Journal Of Materials Chemistry 16(11): 1046-1052.
Sarkar, R, Shaw, AK, Narayanan, SS, Dias, F, Monkman, A & Pal, SK (2006). Direct observation of protein folding in nanoenvironments using a molecular ruler. Biophysical Chemistry 123(1): 40-48.
Hintschich, SI, Dias, FB & Monkman, AP (2006). Dynamics of conformational relaxation in photoexcited oligofluorenes and polyfluorene. Physical Review B 74(4).
Dias, FB, Knaapila, M, Monkman, AP & Burrows, HD (2006). Fast and slow time regimes of fluorescence quenching in conjugated polyfluorene-fluorenone random copolymers: The role of exciton hopping and dexter transfer along the polymer backbone. Macromolecules 39(4): 1598-1606.
Knaapila, M, Garamus, VM, Dias, FB, Almasy, L, Galbrecht, F, Charas, A, Morgado, J, Burrows, HD, Scherf, U & Monkman, AP (2006). Influence of solvent quality on the self-organization of archetypical hairy rods - Branched and linear side chain polyfluorenes: Rodlike chains versus "beta-sheets" in solution. Macromolecules 39(19): 6505-6512.
Dias, FB, Pollock, S, Hedley, G, Palsson, LO, Monkman, A, Perepichka, II, Perepichka, IF, Tavasli, M & Bryce, MR (2006). Intramolecular charge transfer assisted by conformational changes in the excited state of fluorene-dibenzothiophene-S,S-dioxide co-oligomers. Journal Of Physical Chemistry B 110(39): 19329-19339.
Dias, FB, Morgado, J, Macanita, AL, da Costa, FP, Burrows, HD & Monkman, AP (2006). Kinetics and thermodynamics of poly(9,9-dioctylfluorene) beta-phase formation in dilute solution. Macromolecules 39(17): 5854-5864.
Pina, J, Burrows, HD, Becker, RS, Dias, FB, Macanita, AL & de Melo, JS (2006). Photophysical studies of alpha,omega-dicyano-oligothiophenes NC(C4H2S)nCN (n=1-6). Journal Of Physical Chemistry B 110(13): 6499-6505.
Vaughan, HL, Dias, FMB & Monkman, AP (2005). An investigation into the excitation migration in polyfluorene solutions via temperature dependent fluorescence anisotropy. Journal Of Chemical Physics 122(1).
Dias, FB, Maiti, M, Hintschich, SI & Monkman, AP (2005). Intramolecular fluorescence quenching in luminescent copolymers containing fluorenone and fluorene units: A direct measurement of intrachain exciton hopping rate. Journal Of Chemical Physics 122(5).
Tavasli, M, Bettington, S, Bryce, MR, Al Attar, HA, Dias, FB, King, S & Monkman, AP (2005). Oligo(fluorenyl) pyridine ligands and their tris-cyclometalated iridium(III) complexes: synthesis, photophysical properties and electrophosphorescent devices. Journal Of Materials Chemistry 15(46): 4963-4970.
Becker, RS, Favaro, G, Romani, A, Gentili, PL & Dias, FMB (2005). Vibronic effects in pathways of photochemistry and vibrational relaxation. Chemical Physics 316(1-3): 108-116.
Rothe, C, King, SM, Dias, F & Monkman, AP (2004). Triplet exciton state and related phenomena in the beta-phase of poly(9,9-dioctyl)fluorene. Physical Review B 70(19).
Dias, FB, Macanita, AL, de Melo, JS, Burrows, HD, Guntner, R, Scherf, U & Monkman, AP (2003). Picosecond conformational relaxation of singlet excited polyfluorene in solution. Journal Of Chemical Physics 118(15): 7119-7126.
Dias, FB, Lima, JC, Horta, A, Pierola, IF & Macanita, AL (2002). Dynamics of linear poly(methylphenylsiloxane) by time-resolved fluorescence: Slow vs fast relaxations and low-temperature behavior in chains of different lengths. Macromolecules 35(18): 7082-7088.
Dias, FB, Lima, JC, Pierola, IF, Horta, A & Macanita, AL (2001). Internal dynamics of poly(methylphenylsiloxane) chains as revealed by picosecond time resolved fluorescence. Journal Of Physical Chemistry A 105(45): 10286-10295.
Dias, FB, Lima, JC, Macanita, AL, Clarson, SJ, Horta, A & Pierola, IF (2000). Anomalous fluorescence of linear poly(methylphenylsiloxane) in dilute solution at temperatures below-50 degrees C. Macromolecules 33(13): 4772-4779.
Dias, FB, Lima, JC, Macanita, AL, Horta, A & Pierola, IF (2000). Dynamics of cyclic methylphenyltrisiloxane in the picosecond to nanosecond time range. Journal Of Physical Chemistry A 104(1): 17-24.

Supervises

Is supervised by

Professor Andy Monkman