P. T. Boudreault, A. Najari, and M. Leclerc, Processable Low-Bandgap Polymers for Photovoltaic Applications?, Chemistry of Materials, vol.23, issue.3, pp.456-469, 2011.

C. Liu, K. Wang, X. Gong, and A. J. Heeger, Low bandgap semiconducting polymers for polymeric photovoltaics, Chemical Society Reviews, vol.45, issue.17, pp.4825-4846, 2016.

L. Dou, Y. Liu, Z. Hong, G. Li, and Y. Yang, Low-Bandgap Near-IR Conjugated Polymers/Molecules for Organic Electronics, Chemical Reviews, vol.115, issue.23, pp.12633-12665, 2015.

K. Faïd and M. Leclerc, Functionalized regioregular polythiophenes: towards the development of biochromic sensors, Chem. Commun., issue.24, pp.2761-2762, 1996.

S. D. Rughooputh, S. Hotta, A. J. Heeger, and F. Wudl, Chromism of soluble polythienylenes, Journal of Polymer Science Part B: Polymer Physics, vol.25, issue.5, pp.1071-1078, 1987.

I. Lévesque and M. Leclerc, Ionochromic and Thermochromic Phenomena in a Regioregular Polythiophene Derivative Bearing Oligo(oxyethylene) Side Chains, Chemistry of Materials, vol.8, issue.12, pp.2843-2849, 1996.

Y. Lee, W. Yen, W. Su, and C. Dai, Self-assembly and phase transformations of ?-conjugated block copolymers that bend and twist: from rigid-rod nanowires to highly curvaceous gyroids, Soft Matter, vol.7, issue.21, p.10429, 2011.

Y. H. Lee, W. C. Yen, W. F. Su, and C. A. Dai, Self-assembly and phase transformations of ?-conjugated block copolymers that bend and twist: from rigid-rod nanowires to highly curvaceous gyroids, Soft Matter, vol.7, issue.21, p.10429, 2011.

J. Y. Oh, M. Shin, T. I. Lee, W. S. Jang, Y. Min et al., Self-Seeded Growth of Poly(3-hexylthiophene) (P3HT) Nanofibrils by a Cycle of Cooling and Heating in Solutions, Macromolecules, vol.45, issue.18, pp.7504-7513, 2012.

D. Silva, A. P. Gunaratne, H. Q. Mccoy, and C. P. , Direct visual indication of pH windows: 'off-on-off' fluorescent PET (photoinduced electron transfer) sensors/switches, Chemical Communications, issue.21, pp.2399-2400, 1996.

A. P. Monkman, L. O. Pålsson, R. W. Higgins, C. Wang, M. R. Bryce et al., Protonation and Subsequent Intramolecular Hydrogen Bonding as a Method to Control Chain Structure and Tune Luminescence in Heteroatomic Conjugated Polymers, Journal of the American Chemical Society, vol.124, issue.21, pp.6049-6055, 2002.

N. M. Randell, K. M. Fransishyn, and T. L. Kelly, Lewis Acid?Base Chemistry of 7-Azaisoindigo-Based Organic Semiconductors, ACS Applied Materials & Interfaces, vol.9, issue.29, pp.24788-24796, 2017.

S. Hayashi, A. Asano, and T. Koizumi, Modification of pyridine-based conjugated polymer films via Lewis acid: halochromism, characterization and macroscopic gradation patterning, Polymer Chemistry, vol.2, issue.12, p.2764, 2011.

G. Qian, J. Qi, J. A. Davey, J. S. Wright, and Z. Y. Wang, Family of Diazapentalene Chromophores and Narrow-Band-Gap Polymers: Synthesis, Halochromism, Halofluorism, and Visible?Near Infrared Photodetectivity, Chemistry of Materials, vol.24, issue.12, pp.2364-2372, 2012.

G. Qian and Z. Y. Wang, Near-Infrared Thermochromic Diazapentalene Dyes, Advanced Materials, vol.24, issue.12, pp.1582-1588, 2012.

G. C. Welch, R. Coffin, J. Peet, and G. C. Bazan, Band Gap Control in Conjugated Oligomers via Lewis Acids, Journal of the American Chemical Society, vol.131, issue.31, pp.10802-10803, 2009.

P. Zalar, Z. B. Henson, G. C. Welch, G. C. Bazan, and T. Q. Nguyen, Color Tuning in Polymer Light-Emitting Diodes with Lewis Acids, Angewandte Chemie International Edition, vol.51, issue.30, pp.7495-7498, 2012.

J. Lin, B. Liu, M. Yu, L. Xie, W. Zhu et al., Heteroatomic Conjugated Polymers and the Spectral Tuning of Electroluminescence via a Supramolecular Coordination Strategy, Macromolecular Rapid Communications, vol.37, issue.22, pp.1807-1813, 2016.

D. C. Huang and W. , Heteroatomic Conjugated Polymers and the Spectral Tuning of Electroluminescence via a Supramolecular Coordination Strategy, Macromolecular Rapid Communications, vol.37, issue.22, pp.1807-1813, 2016.

T. Myochin, K. Kiyose, K. Hanaoka, H. Kojima, T. Terai et al., Rational Design of Ratiometric Near-Infrared Fluorescent pH Probes with Various pKaValues, Based on Aminocyanine, Journal of the American Chemical Society, vol.133, issue.10, pp.3401-3409, 2011.

T. Ameri, P. Khoram, J. Min, and C. J. Brabec, Organic Ternary Solar Cells: A Review, Advanced Materials, vol.25, issue.31, pp.4245-4266, 2013.

K. H. Hendriks, W. Li, M. M. Wienk, and R. A. Janssen, Small-Bandgap Semiconducting Polymers with High Near-Infrared Photoresponse, Journal of the American Chemical Society, vol.136, issue.34, pp.12130-12136, 2014.

J. G. Croissant, J. I. Zink, L. Raehm, and J. Durand, Two-Photon-Excited Silica and Organosilica Nanoparticles for Spatiotemporal Cancer Treatment, Advanced Healthcare Materials, vol.7, issue.7, p.1701248, 2018.
URL : https://hal.archives-ouvertes.fr/hal-01781459

J. Qi, W. Qiao, and Z. Y. Wang, Advances in Organic Near-Infrared Materials and Emerging Applications, The Chemical Record, vol.16, issue.3, pp.1531-1548, 2016.

Y. He, Y. Cao, and Y. Wang, Progress on Photothermal Conversion in the Second NIR Window Based on Conjugated Polymers, Asian Journal of Organic Chemistry, vol.7, issue.11, pp.2201-2212, 2018.

P. Cheng and X. Zhan, Stability of organic solar cells: challenges and strategies, Chemical Society Reviews, vol.45, issue.9, pp.2544-2582, 2016.

J. L. Bredas, R. Silbey, D. S. Boudreaux, and R. R. Chance, Chain-length dependence of electronic and electrochemical properties of conjugated systems: polyacetylene, polyphenylene, polythiophene, and polypyrrole, Journal of the American Chemical Society, vol.105, issue.22, pp.6555-6559, 1983.

J. Gierschner, J. Cornil, and H. J. Egelhaaf, Optical Bandgaps of ?-Conjugated Organic Materials at the Polymer Limit: Experiment and Theory, Advanced Materials, vol.19, issue.2, pp.173-191, 2007.

M. Wykes, B. Milián-medina, and J. Gierschner, Computational engineering of low bandgap copolymers, Frontiers in Chemistry, vol.1, pp.35-47, 2013.

E. F. Oliveira, J. C. Roldao, B. Milián-medina, F. C. Lavarda, and J. Gierschner, Calculation of low bandgap homopolymers: Comparison of TD-DFT methods with experimental oligomer series, Chemical Physics Letters, vol.645, pp.169-173, 2016.

J. Torras, J. Casanovas, and C. Alemán, Reviewing Extrapolation Procedures of the Electronic Properties on the ?-Conjugated Polymer Limit, The Journal of Physical Chemistry A, vol.116, issue.28, pp.7571-7583, 2012.

B. P. Karsten, L. Viani, J. Gierschner, J. Cornil, and R. A. Janssen, An Oligomer Study on Small Band Gap Polymers, The Journal of Physical Chemistry A, vol.112, issue.43, pp.10764-10773, 2008.

A. Fradon, E. Cloutet, G. Hadziioannou, C. Brochon, and F. Castet, Optical properties of donor?acceptor conjugated copolymers: A computational study, Chemical Physics Letters, vol.678, pp.9-16, 2017.
URL : https://hal.archives-ouvertes.fr/hal-01505581

Y. Zhao and D. G. Truhlar, The M06 suite of density functionals for main group thermochemistry, thermochemical kinetics, noncovalent interactions, excited states, and transition elements: two new functionals and systematic testing of four M06-class functionals and 12 other functionals, Theoretical Chemistry Accounts, vol.120, issue.1-3, pp.215-241, 2007.

J. C. Sancho-garcía and A. J. Pérez-jiménez, Improved accuracy with medium cost computational methods for the evaluation of bond length alternation of increasingly long oligoacetylenes, Physical Chemistry Chemical Physics, vol.9, issue.44, p.5874, 2007.

M. Torrent-sucarrat, S. Navarro, F. P. Cossío, J. M. Anglada, and J. M. Luis, Relevance of the DFT method to study expanded porphyrins with different topologies, Journal of Computational Chemistry, vol.38, issue.32, pp.2819-2828, 2017.

D. D. Méndez-hernández, P. Tarakeshwar, D. Gust, T. A. Moore, A. L. Moore et al., Simple and accurate correlation of experimental redox potentials and DFT-calculated HOMO/LUMO energies of polycyclic aromatic hydrocarbons, Journal of Molecular Modeling, vol.19, issue.7, pp.2845-2848, 2012.

J. Tomasi, B. Mennucci, and R. Cammi, Quantum Mechanical Continuum Solvation Models, Chemical Reviews, vol.105, issue.8, pp.2999-3094, 2005.

W. Kuhn, Über das Absorptionsspektrum der Polyene, Helvetica Chimica Acta, vol.31, issue.6, pp.1780-1799, 1948.

M. J. Frisch, G. W. , H. B. Schlegel, G. E. Scuseria, M. A. Robb et al.,

G. A. Mennucci, H. Petersson, M. Nakatsuji, X. Caricato, H. P. Li et al.,

M. Sonnenberg, M. Hada, K. Ehara, R. Toyota, J. Fukuda et al.,

R. Staroverov, J. Kobayashi, K. Normand, A. Raghavachari, J. C. Rendell et al.,

J. J. Salvador, S. Dannenberg, A. D. Dapprich, . Daniels, J. B. Farkas et al., Gaussian 09 revision D01, 2009.

I. Welterlich and B. Tieke, Dithioketopyrrolopyrrole (DTPP)-based conjugated polymers prepared upon thionation with Lawesson's reagent, Polymer Chemistry, vol.4, issue.13, p.3755, 2013.

L. S. Lussier, C. Sandorfy, .. Le-thanh-hoa, and D. Vocelle, Effect of acids on the infrared spectra of the Schiff base of trans-retinal, The Journal of Physical Chemistry, vol.91, issue.9, pp.2282-2287, 1987.

A. Kütt, S. Selberg, I. Kaljurand, S. Tshepelevitsh, A. Heering et al., pKa values in organic chemistry ? Making maximum use of the available data, Tetrahedron Letters, vol.59, issue.42, pp.3738-3748, 2018.

I. D. Brown and A. Skowron, Electronegativity and Lewis acid strength, Journal of the American Chemical Society, vol.112, issue.9, pp.3401-3403, 1990.