Imperial College London

ProfessorMartinHeeney

Faculty of Natural SciencesDepartment of Chemistry

Professor of Organic Materials
 
 
 
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Contact

 

+44 (0)20 7594 1248m.heeney Website

 
 
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Location

 

133ChemistrySouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

262 results found

Boufflet P, Casey A, Xia Y, Stavrinou PN, Heeney Met al., 2017, Pentafluorobenzene end-group as a versatile handle for para fluoro "click" functionalization of polythiophenes, CHEMICAL SCIENCE, Vol: 8, Pages: 2215-2225, ISSN: 2041-6520

JOURNAL ARTICLE

Casey A, Green JP, Tuladhar PS, Kirkus M, Han Y, Anthopoulos TD, Heeney Met al., 2017, Cyano substituted benzotriazole based polymers for use in organic solar cells, JOURNAL OF MATERIALS CHEMISTRY A, Vol: 5, Pages: 6465-6470, ISSN: 2050-7488

JOURNAL ARTICLE

Costa L, Al-Hashimi M, Heeney M, Terekhov A, Rajput D, Hofmeister W, Verma Aet al., 2017, Template-Synthesis of Conjugated Poly(3-Hexylselenophene) (P3HS) Nanofibers Using Femtosecond Laser Machined Fused Silica Templates, MRS ADVANCES, Vol: 2, Pages: 2957-2960, ISSN: 2059-8521

JOURNAL ARTICLE

Creamer A, Casey A, Marsh AV, Shahid M, Gao M, Heeney Met al., 2017, Systematic Tuning of 2,1,3-Benzothiadiazole Acceptor Strength by Monofunctionalization with Alkylamine, Thioalkyl, or Alkoxy Groups in Carbazole Donor-Acceptor Polymers, MACROMOLECULES, Vol: 50, Pages: 2736-2746, ISSN: 0024-9297

JOURNAL ARTICLE

Datko BD, Thomas AK, Fei Z, Heeney M, Grey JKet al., 2017, Effect of a heavy heteroatom on triplet formation and interactions in single conjugated polymer molecules and aggregates., Phys Chem Chem Phys, Vol: 19, Pages: 28239-28248

Triplet formation and interactions with emissive singlet excitons are investigated in poly(3-hexylselenophene) (P3HS) using single molecule spectroscopy. P3HS is a heavy atom analog of the more commonly studied poly(3-hexylthiophene) (P3HT), a benchmark polymer for solar cells. P3HS tends to aggregate strongly which necessitates dilution to ultra-low levels within a solid inert host in order to resolve photophysical responses of single chains. Fluorescence excitation intensity modulation is performed on isolated P3HS chains using a sequence of rectangular pulses of varying intensities to probe the presence of spin-forbidden triplet excitons. Triplet population dynamics originating from singlet-triplet and triplet-triplet interactions appear as quenching of the initial fluorescence intensity to steady-state levels on characteristic time scales of ∼1-10 μs. Over 80% of all molecules studied display significant fluorescence intensity modulation (quenching depths >50%) indicative of efficient intersystem crossing and large triplet occupancies. Because triplets are highly localized and singlet-triplet and triplet-triplet annihilation rate constants are comparable to those of intersystem crossing, multiple triplets are present at any given time on single P3HS chains. Triplet lifetimes were estimated to be ∼4 μs (upper limit) determined from recovery to the ground electronic singlet state in the absence of light and, surprisingly, triplets vanish at the onset of P3HS aggregation. This result was unexpected since P3HS triplet formation takes place on time scales <30 ps making this process competitive with most accessible non-radiative deactivation pathways.

JOURNAL ARTICLE

Fei Z, Chen L, Han Y, Gann E, Chesman ASR, McNeill CR, Anthopoulos TD, Heeney M, Pietrangelo Aet al., 2017, Alternating 5,5-Dimethylcyclopentadiene and Diketopyrrolopyrrole Copolymer Prepared at Room Temperature for High Performance Organic Thin-Film Transistors, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 139, Pages: 8094-8097, ISSN: 0002-7863

JOURNAL ARTICLE

Fei Z, Han Y, Gann E, Hodsden T, Chesman ASR, McNeill CR, Anthopoulos TD, Heeney Met al., 2017, Alkylated Selenophene-Based Ladder-Type Monomers via a Facile Route for High-Performance Thin-Film Transistor Applications, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 139, Pages: 8552-8561, ISSN: 0002-7863

JOURNAL ARTICLE

Green JP, Cryer SJ, Marafie J, White AJP, Heeney Met al., 2017, Synthesis of a Luminescent Arsolo[2,3-d:5,4-d']bis(thiazole) Building Block and Comparison to Its Phosphole Analogue, ORGANOMETALLICS, Vol: 36, Pages: 2632-2636, ISSN: 0276-7333

JOURNAL ARTICLE

Hu Z, Haws RT, Fei Z, Boufflet P, Heeney M, Rossky PJ, Vanden Bout DAet al., 2017, Impact of backbone fluorination on nanoscale morphology and excitonic coupling in polythiophenes, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, Vol: 114, Pages: 5113-5118, ISSN: 0027-8424

JOURNAL ARTICLE

Patra D, Lee J, Lee J, Sredojevic DN, White AJP, Bazzi HS, Brothers EN, Heeney M, Fang L, Yoon M-H, Al-Hashimi Met al., 2017, Synthesis of low band gap polymers based on pyrrolo[3,2-d:4,5-d ']bisthiazole (PBTz) and thienylenevinylene (TV) for organic thin-film transistors (OTFTs), JOURNAL OF MATERIALS CHEMISTRY C, Vol: 5, Pages: 2247-2258, ISSN: 2050-7526

JOURNAL ARTICLE

Rodriquez D, Kim J-H, Root SE, Fe Z, Boufflet P, Heeney M, Kim T-S, Lipomi DJet al., 2017, Comparison of Methods for Determining the Mechanical Properties of Semiconducting Polymer Films for Stretchable Electronics, ACS APPLIED MATERIALS & INTERFACES, Vol: 9, Pages: 8855-8862, ISSN: 1944-8244

JOURNAL ARTICLE

Wade J, Wood S, Collado-Fregoso E, Heeney M, Durrant J, Kim J-Set al., 2017, Impact of Fullerene Intercalation on Structural and Thermal Properties of Organic Photovoltaic Blends, JOURNAL OF PHYSICAL CHEMISTRY C, Vol: 121, Pages: 20976-20985, ISSN: 1932-7447

JOURNAL ARTICLE

Wijeyasinghe N, Regoutz A, Eisner F, Du T, Tsetseris L, Lin Y-H, Faber H, Pattanasattayavong P, Li J, Yan F, McLachlan MA, Payne DJ, Heeney M, Anthopoulos TDet al., 2017, Copper(I) Thiocyanate (CuSCN) Hole-Transport Layers Processed from Aqueous Precursor Solutions and Their Application in Thin-Film Transistors and Highly Efficient Organic and Organometal Halide Perovskite Solar Cells, ADVANCED FUNCTIONAL MATERIALS, Vol: 27, ISSN: 1616-301X

JOURNAL ARTICLE

Al-Hashimi M, Han Y, Smith J, Bazzi HS, Alqaradawi SYA, Watkins SE, Anthopoulos TD, Heeney Met al., 2016, Influence of the heteroatom on the optoelectronic properties and transistor performance of soluble thiophene-, selenophene- and tellurophene-vinylene copolymers, CHEMICAL SCIENCE, Vol: 7, Pages: 1093-1099, ISSN: 2041-6520

JOURNAL ARTICLE

Bannock JE, Xu W, Baissas T, Heeney M, de Mello JCet al., 2016, Rapid flow-based synthesis of poly(3-hexylthiophene) using 2-methyltetrahydrofuran as a bio-derived reaction solvent, EUROPEAN POLYMER JOURNAL, Vol: 80, Pages: 240-246, ISSN: 0014-3057

JOURNAL ARTICLE

Bannock JH, Treat ND, Chabinyc M, Stingelin N, Heeney M, de Mello JCet al., 2016, The influence of polymer purification on the efficiency of poly(3-hexylthiophene):fullerene organic solar cells, SCIENTIFIC REPORTS, Vol: 6, ISSN: 2045-2322

JOURNAL ARTICLE

Boufflet P, Wood S, Wade J, Fei Z, Kim J-S, Heeney Met al., 2016, Comparing blends and blocks: Synthesis of partially fluorinated diblock polythiophene copolymers to investigate the thermal stability of optical and morphological properties, BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY, Vol: 12, Pages: 2150-+, ISSN: 1860-5397

JOURNAL ARTICLE

Cachelin P, Green JP, Peijs T, Heeney M, Bastiaansen CWMet al., 2016, Optical Acetone Vapor Sensors Based on Chiral Nematic Liquid Crystals and Reactive Chiral Dopants, ADVANCED OPTICAL MATERIALS, Vol: 4, Pages: 592-596, ISSN: 2195-1071

JOURNAL ARTICLE

Casey A, Dimitrov SD, Shakya-Tuladhar P, Fei Z, Malgorzata N, Han Y, Anthopoulos TD, Durrant JR, Heeney Met al., 2016, Effect of Systematically Tuning Conjugated Donor Polymer Lowest Unoccupied Molecular Orbital Levels via Cyano Substitution on Organic Photovoltaic Device Performance, CHEMISTRY OF MATERIALS, Vol: 28, Pages: 5110-5120, ISSN: 0897-4756

JOURNAL ARTICLE

Casey A, Han Y, Gann E, Green JP, McNeill CR, Anthopoulos TD, Heeney Met al., 2016, Vinylene-Linked Oligothiophene-Difluorobenzothiadiazole Copolymer for Transistor Applications, ACS APPLIED MATERIALS & INTERFACES, Vol: 8, Pages: 31154-31165, ISSN: 1944-8244

JOURNAL ARTICLE

Dimitrov SD, Schroeder BC, Nielsen CB, Bronstein H, Fei Z, McCulloch I, Heeney M, Durrant JRet al., 2016, Singlet Exciton Lifetimes in Conjugated Polymer Films for Organic Solar Cells, POLYMERS, Vol: 8, ISSN: 2073-4360

JOURNAL ARTICLE

Fei Z, Han Y, Martin J, Scholes FH, Al-Hashimi M, AlQaradawi SY, Stingelin N, Anthopoulos TD, Heeney Met al., 2016, Conjugated Copolymers of Vinylene Flanked Naphthalene Diimide, MACROMOLECULES, Vol: 49, Pages: 6384-6393, ISSN: 0024-9297

JOURNAL ARTICLE

Green JP, Han Y, Kilmurray R, McLachlan MA, Anthopoulos TD, Heeney Met al., 2016, An Air-Stable Semiconducting Polymer Containing Dithieno[3,2-b:2 ',3 '-d]arsole, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 55, Pages: 7148-7151, ISSN: 1433-7851

JOURNAL ARTICLE

Green JP, Han Y, Kilmurray R, McLachlan MA, Anthopoulos TD, Heeney Met al., 2016, An Air-Stable Semiconducting Polymer Containing Dithieno[3,2- b :2′,3′- d ]arsole, Angewandte Chemie, Vol: 128, Pages: 7264-7267, ISSN: 0044-8249

JOURNAL ARTICLE

Han Y, Barnes G, Lin Y-H, Martin J, Al-Hashimi M, AlQaradawi SY, Anthopoulos TD, Heeney Met al., 2016, Doping of Large Ionization Potential Indenopyrazine Polymers via Lewis Acid Complexation with Tris(pentafluorophenyl)borane: A Simple Method for Improving the Performance of Organic Thin-Film Transistors, CHEMISTRY OF MATERIALS, Vol: 28, Pages: 8016-8024, ISSN: 0897-4756

JOURNAL ARTICLE

Isakov I, Paterson AF, Solomeshch O, Tessler N, Zhang Q, Li J, Zhang X, Fei Z, Heeney M, Anthopoulos TDet al., 2016, Hybrid complementary circuits based on p-channel organic and n-channel metal oxide transistors with balanced carrier mobilities of up to 10 cm(2)/Vs, APPLIED PHYSICS LETTERS, Vol: 109, ISSN: 0003-6951

JOURNAL ARTICLE

Kang K, Watanabe S, Broch K, Sepe A, Brown A, Nasrallah I, Nikolka M, Fei Z, Heeney M, Matsumoto D, Marumoto K, Tanaka H, Kuroda S-I, Sirringhaus Het al., 2016, 2D coherent charge transport in highly ordered conducting polymers doped by solid state diffusion, NATURE MATERIALS, Vol: 15, Pages: 896-+, ISSN: 1476-1122

JOURNAL ARTICLE

Kassar T, Gueldal NS, Berlinghof M, Ameri T, Kratzer A, Schroeder BC, Li Destri G, Hirsch A, Heeney M, McCulloch I, Brabec CJ, Unruh Tet al., 2016, Real-Time Investigation of Intercalation and Structure Evolution in Printed Polymer:Fullerene Bulk Heterojunction Thin Films, ADVANCED ENERGY MATERIALS, Vol: 6, ISSN: 1614-6832

JOURNAL ARTICLE

Paterson AF, Treat ND, Zhang W, Fei Z, Wyatt-Moon G, Faber H, Vourlias G, Patsalas PA, Solomeshch O, Tessler N, Heeney M, Anthopoulos TDet al., 2016, Small Molecule/Polymer Blend Organic Transistors with Hole Mobility Exceeding 13 cm(2) V-1 s(-1), ADVANCED MATERIALS, Vol: 28, Pages: 7791-+, ISSN: 0935-9648

JOURNAL ARTICLE

Zhang W, Han Y, Zhu X, Fei Z, Feng Y, Treat ND, Faber H, Stingelin N, McCulloch I, Anthopoulos TD, Heeney Met al., 2016, A Novel Alkylated Indacenodithieno[3,2-b]thiophene-Based Polymer for High-Performance Field-Effect Transistors, ADVANCED MATERIALS, Vol: 28, Pages: 3922-+, ISSN: 0935-9648

JOURNAL ARTICLE

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