Lessard Research Group - Next Generation Materials for Next Generation Applications

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48. Grant, T. M.; Dang, Ming T.; Han, Y.; Seferos, D.; Lessard, B. H.*; Bender, T. P.* Bis(tri-n-alkylsilyl oxide) silicon phthalocyanines: A Start to Establishing a Structure Property Relationship as both Ternary Additives and Non-Fullerene Electron Acceptors in Bulk Heterojunction Organic Photovoltaic Devices. J. Mater. Chem. A, 2017,5, 12168-12182. doi: 10.1039/C6TA10739G

47. Szawiola, A. M.; Souza, N. d. M.; Lessard, B. H.; Bender, T. P. Phenylated Silicone-based Polymers via the Piers-Rubinsztajn Process. Polym. Int., ASAP, 2017. doi: 10.1002/pi.5396

46. Sampson K. L.;  Lessard, B. H.;  Cho, E.; Bender, T. P.* Boron Subphthalocyanine Coupled to Methacrylate-Rich Terpolymers by Nitroxide Mediated Polymerization: The Subphthalocyanine Dictates the Phase Transition Temperatures. Macromol. Chem. Phys. 2017, 218, 1600592 (1-12) doi: 10.1002/macp.201600592

45. King, B.; Lessard, B. H.* Controlled Synthesis and Degradation of Poly(N-(Isobutoxymethyl) Acrylamide) Homopolymers and Block Copolymers. Macromol. React. Eng. 2017 11, 2, 1600073 (1-10). (Advanced Science News, Cover Articledoi: 10.1002/mren.201600073

44. Grant, T. M.; Gorisse, T.; Dautel, O. J.; Wantz, G.* ; Lessard, B. H.*  Multifunctional ternary additive in bulk heterojunction OPV: increased device performance and stability. J. Mater. Chem. A, 2017, 5, 1581-1587 doi:10.1039/C6TA08593


43. Melville, O.; Imperiale, C.; King, B.; Lessard, B. H.* Orthogonally Processable Carbazole-Based Polymer Thin Films by Nitroxide-Mediated Polymerization. Langmuir bf 2016, 32, 13640-13648. doi:10.1021/acs.langmuir.6b0392

42. Kannan, N. B. and Lessard, B. H.* Copolymerization of 2,3,4,5,6-Pentafluorostyrene and Methacrylic Acid by Nitroxide-Mediated Polymerization: The Importance of Reactivity Ratios. Macromol. Reaction Eng., 2016, 10, 600-610. (Cover article)  doi:10.1002/mren.201600052

41. Lessard, B. H.*; Mackay, S.; Métafiot, A.; Maric, M.*Poly(styrene-alt-maleic anhydride)-block-poly(methacrylate-ran- styrene) Block Copolymers with Tunable Mechanical Properties by Nitroxide Mediated Controlled Radical Polymerization. Macromol. Research, 2016, 24, 710-716.  doi:10.1007/s13233-016-4096-3

40. Lessard, B. H.;  Bender, T. P. Crystal Structures of Bis(phenoxy)-Silicon Phthalocyanines: increasing π π interactions, solubility and disorder and no halogen bonding observed. ActaE, 2016, E72, 988-994. doi:10.1107/S205698901600935X

39. Plint, T.; Lessard, B. H.; Bender, T. P. Assessing the potential of group 13 and 14 metal/metalloid phthalocyanines as hole transporting layers in organic light emitting diodes. J. Appl. Phys., 2016,119,145502. doi:10.1063/1.4945377.

38. Lessard, B. H.*; Maric, M*. Thiophene decorated block copolymers templated from poly(styrene-alt-maleic anhydride)-block-poly(styrene) one-shot block copolymer: effect of thiophene inclusion on morphology. J Polym. Research, 2016, 23:40 . doi:10.1007/s10965-016-0931-7


37. Lessard, B. H.* Novel Materials: From Nanoporous Materials to Micro-Electronics. Nitroxide Mediated Polymerization: From Fundamentals to Applications in Materials Science, Royal Society of Chemistry, Cambridge, 2015, Chapter 11, 441-493. doi:10.1039/9781782622635-00441

36. Lessard, B. H.; Grant, T.; White, R.; Thibau, E.; Lu, Z.-H.; Bender, T. P.* The Position and Frequency of Fluorine Atoms Changes the Electron Donor/Acceptor Properties of Fluorophenoxy Silicon Phthalocyanines within Organic Photovoltaic Devices. J. Mater. Chem. A, 2015, 3,24512-24524. doi: 10.1039/C5TA07173A

35. Lessard, B. H.*; Bender, T. P.* Controlled and Selective placement of Boron Subphthalocyanines on Either Chain End of Polymers Synthesized by Nitroxide Mediated Polymerization. AIMS Macromolecular Science, 2015, 2, 411-426.  (OPEN ACCESSdoi: 10.3934/molsci.2015.4.411

34. Melvile, O.; Lessard, B. H.*; Bender, T. P*. Phthalocyanine Based Organic Thin-Film Transistors: A Review of Recent Advances. Appl. Mater. Interfaces, 2015, 7, 13105-13118. (OPEN ACCESSdoi:10.1021/acsami.5b01718.

33. Lessard, B. H.; Sampson, K. L.; Plint, T.;  Bender P. T. Boron subphthalocyanine polymers: Avoiding the small molecule side product and exploring their use in organic light-emitting diodes. Journal of Polymer Science: Part A: Polymer Chemistry. 2015, 53, 1996-2006. (INSIDE COVERdoi: 10.1002/pola.27685

32. Josey, D. S.; Castrucci, J. S.; Dang, J. D.; Lessard, B. H.; Bender, T. P. Evaluating thiophene electron donor layers for the rapid assessment of boron subphthalocyanines as electron acceptors in organic photovoltaics; solution or vacuum deposition?. ChemPhysChem, 2015, 16, 1245-1250, doi: 10.1002/cphc.201402751

31. Lessard, B. H.; White, R. T.; Al-Amar, M.; Plint, T.;  Castrucci, J. S.; Josey, D. S.; Lu, Z. H.;  Bender, T. P. Assessing the potential roles of silicon and germanium phthalocyanines in planar heterojunction organic photovoltaic devices and how pentafluoro phenoxylation can enhance π - π interactions and device performance. Applied Materials & Interfaces, 2015, 7, 5076-5088. doi:10.1021/am508491v

30. Lessard, B. H.; Al-Amar, M.; Grant, T. M.; White, R. T.; Lu, Z. H.; Bender, T. P. From Chloro to Fluoro, Expanding the Role of Aluminium Phthalocyanine in Organic Photovoltaic Devices. Journal of Materials Chemistry A, 2015, 3 ,5047-5053. doi: 10.1039/C4TA06759B

29. Lessard, B. H.*; Beouch, L;, Goubard, F.; Wantz, G.; Maric, M.; Gigmes, D.; Dumur, F.* Poly(2-(N-carbazolyl)ethyl acrylate) as Host for High Efficiency Polymer Light-Emitting Devices. Organic Electronics, 2015 17, 377-385. doi:10.1016/j.orgel.2014.12.019


28. Lessard, B. H.; Dang, J. D.; Grant, T. M.; Gao, D.; Seferos, D.; Bender, T. P. Bis(tri-n-hexylsilyl oxide) silicon phthalocyanine is a unique additive in ternary bulk heterojunction organic photovoltaic devices. Applied Materials & Interfaces, 2014, 6, 15040-15051. doi: 10.1021/am503038t

27. Wang, J; Lessard, B. H.; Maric, M.; Favis, B. D. Hierarchically Porous Polymeric Materials from Ternary Polymer Blends. Polymer, 55, 3461-3467
(Communication). doi: 10.1016/j.polymer.2014.06.042

26. Kazemi, N; Lessard, B. H.; Maric, M.; Duever, T. A.; Penlidis, A. Reactivity Ratio Estimation in Radical Copolymerization: From Preliminary Estimates to Optimal Design of Experiments. Industrial & Engineering Chemistry Research, 2014, 7305-7312. doi: 10.1021/ie402765k


25. Lessard, B. H.; Wang, Z. J.; Maric, M.  Thermo-Responsive Micelles based on Poly(Phenyl Acrylate)-b-Poly(Diethyl Acrylamide) Block Copolymers. eXpress polymer letters, 2013, 7, 1020-1029. doi: 10.3144/expresspolymlett.2013.100 (EPL-0004635_article)

24. Lessard, B. H.; Bender, T. P. Boron subphthalocyanine polymers by facile coupling to poly(acrylic acid-ran-styrene) copolymers synthesized by nitroxide mediated polymerization and the associated problems with auto-initiation. Macromol. Rapid Commun., 2013, 34, 568-573. (Communication & Cover article). doi: 10.1002/marc.201200787

23. Lessard, B. H.*; Guillaneuf ,Y; Mathew, M.; Liang, K; Clement, J.-L.; Gigmes, D.; Hutchinson, R.A.; Maric, M. Understanding the Controlled Polymerization of Methyl Methacrylate with Low Concentrations of 9-(4-Vinylbenzyl)-9H-Carbazole Comonomer by Nitroxide Mediated Polymerization: The Pivotal Role of Reactivity Ratios. Macromolecules, 2013, 46, 805-813.(Corresponding author).doi: 10.1021/ma3023525


22. Lessard, B. H.; Savelyeva, X.; Maric, M. Smart Morpholine-Functional Statistical Copolymers Synthesized by Nitroxide Mediated Polymerization. Polymer, 2012, 25, 5649-5656. doi: 10.1016/j.polymer.2012.10.020

21. Dang, J.; Virdo, J.;Lessard, B. H.; Paton, A.; Bultz, E.; Bender, T. A boron subphthalocyanine polymer: Poly(4-methyl styrene)-co-poly(phenoxy-boron-subphthalocyanine) Macromolecules, 2012, 5, 7791-7798. doi: 10.1021/ma301247p

20. Lessard, B. H.; Maric, M.Optimization of 4-Vinylpyridine Nitroxide Mediated Controlled Radical Polymerization: Effect of Initiator Protection and Complexation with C60. e-Polymer, 2012, 063, 1-16. (e-Polymer)

19. Lessard, B. H.; Ling, E. J.; Maric, M. Fluorescent, Thermoresponsive Oligo(ethylene glycol) Methacrylate/9-(4-vinylbenzyl)-9H-carbazole Copolymers Designed with Multiple LCSTs via Nitroxide Mediated Controlled Radical Polymerization. Macromolecules, 2012, 45,1879-1891. doi: 10.1021/ma202648k

18. Lessard, B. H.; Maric, M. Water-Soluble/Dispersible Carbazole-Containing Random and Block Copolymers by Nitroxide Mediated Radical Polymerization. Canadian Journal of Chemical Engineering, 2012, 91, 618-629. doi: 10.1002/cjce.21676

17. Savelyeva, X.; Lessard, B. H.; Maric, M. Amphiphilic poly(4-Acryloylmorpholine)-block-poly(2- (N-Carbazolyl) Ethyl Acrylate) Random Copolymers and Block Copolymers Synthesized by Nitroxide Mediated Polymerization. Macromolecular Reaction Engineering, 2012, 6, 200-212. doi: 10.1002/mren.201100076


16. Lessard, B.; Marc, M.  ”Smart” Poly(2-(Dimethylamino)ethyl Methacrylate-ran-9-(4-Vinylbenzyl)- 9H-Carbazole) Copolymers Synthesized by Nitroxide Mediated Radical Polymerization. Journal of Polymer Science: Part A: Polymer Chemistry, 2011, 49, 5270-5283. doi: 10.1002/pola.25004 (Inside Cover Article)

15. Maric, M.; Lessard, B. H.; Ling, E. J.; Consolante, V.;  Incorporating Primary Amine Pendant Groups into Copolymers via Nitroxide Mediated Polymerization. Reactive and Functional Polymers, 2011, 71, 1137-1147.doi:10.1016/j.reactfunctpolym.2011.09.006

14. Moayeri, A.; Lessard, B.; Maric, M. Nitroxide mediated controlled synthesis of glycidyl methacrylate-rich copolymers enabled by SG1-based alkoxyamines bearing succinimidyl ester groups. Polymer Chemistry, 2011, 2, 2084-2092. doi: 10.1039/C1PY00190F

13. Lessard, B.; Ling, E. J.; Morin, M. S. T.; Maric, M. Nitroxide Mediated Radical Copolymerization of Methyl Methacrylate Controlled with a Minimal Amount of 9-(4-Vinylbenzyl)-9H-Carbazole. Journal of Polymer Science: Part A: Polymer Chemistry, 2011, 49, 1033-1045. doi: 10.1002/pola.24522

12. Lessard, B.; Aumand-Bourque, C.; Chaudury, R.; Gomez, D.; Haroon, A.; Ibrahimian, N.; Mackay, S.; Noel, M.-C.; Patel, R.; Sitaram, S.; Valla, S.; White B.; Maric, M. Poly(ethylene-co-butylene)-b-(styrene-ran-maleic anhydride)2 Compatibilizers via Nitroxide Mediated Radical Polymerization. International Polymer Processing, 2011, XXVI, 197-204. doi: 10.3139/217.2425


11. Zhang, C.; Lessard, B.; Maric, M. Synthesis and Characterization of Benzyl Methacrylate/Styrene Random Copolymers Prepared by NMP Macromolecular Reaction Engineering, 2010, 4, 415-423. doi: 10.1002/mren.200900069

10. Lessard, B.; Tervo, C.; De Wahl, S. : Clerveaux.; F. J.; Tang, K. K.; Yasmine, S.; Andjelic, S.; DAlessandro, A; Maric, M. Poly(Tert-Butyl Methacrylate/Styrene) Macroinitiators as Precursors for Organo and Water-Soluble Functional Copolymers using Nitroxide Mediated Controlled Radical Polymerization. Macromolecules, 2010, 43, 868-878. doi: 10.1021/ma9022185

9. Lessard, B.; Maric, M. One-Step Poly(styrene-alt-maleic anhydride)-block-Poly(styrene) Copolymers with Highly Alternating Styrene/Maleic Anhydride Sequences is Possible by Nitroxide Mediated Polymerization. Macromolecules 2010, 43, 879-885. doi: 10.1021/ma902234t


8. Lessard, B.; Tervo, C.; Maric, M. High Molecular Weight Poly(tert-Butyl Acrylate) by Nitroxide Mediated Polymerization: Effect of Chain Transfer to Solvent. Macromolecular Reaction Engineering, 2009, 3 (5-6), 245-256. doi: 10.1002/mren.200900014 (Cover Article)

7. Lessard, B.; Maric, M. Incorporating Glycidyl Methacrylate into Block Copolymers using Poly(methacrylate-ran-styrene) Macroinitiators Synthesized by Nitroxide-Mediated Polymerization. Journal of Polymer Science: Part A: Polymer Chemistry, 2009, 47, 2574-2588. doi: 10.1002/pola.23343


6. Lessard, B.; Maric, M. Nitroxide-Mediated Polymerization of Poly(ethylene glycol) Acrylate Comb-Like Polymers. Macromolecules 2008, 41, 7870-7880. doi: 10.1021/ma800603a

5. Lessard, B.; Maric, M. Effect of Acid Protecting Group on Livingness” of Poly(acrylic acid)/Poly(styrene) Random Copolymer Macroinitiators for Nitroxide-Mediated Polymerization of Styrene. Macromolecules 2008, 41, 7881-7891. doi: 10.1021/ma801255g

4. Lessard, B.; Maric, M. Effect of Acrylic Acid Neutralization on ”Livingness” of Poly(styrene-ran-acrylic acid) Macro-initiators for Nitroxide-Mediated Polymerization of Styrene. Polymer International 2008, 57:1141-1151. doi: 10.1002/pi.2456

3. Lessard, B.; Schmidt, S. C.; Maric, M. Styrene/Acrylic Acid Random Copolymers Synthesized by Nitroxide-Mediated Polymerization: Effect of Free Nitroxide on Kinetics and Copolymer Composition. Macromolecules 2008, 41,3446-3454. doi: 10.1021/ma0718604

2. Jabbar, R.; Graffe, A.; Lessard, B.; Maric, M. Nitroxide-Mediated Synthesis of Styrenic-Based Segmented and Tapered Block Copolymers Using Poly(lactide)-Functionalized TEMPO Macromediators. J. Appl. Polym. Sci. 2008, 109, 3185-3195.doi: 10.1002/app.28377


1. Lessard, B.; Graffe, A.; Maric, M. Styrene/tert-Butyl Acrylate Random Copolymers Synthesized by Nitroxide-Mediated Polymerization: Effect of Free Nitroxide on Kinetics and Copolymer Composition. Macromolecules 2007, 40, 9284-9292. doi: 10.1021/ma071689w