Controlling Photo-oxidation Processes Of A Polyfluorene Derivative: The Effect Of Additives And Mechanism

The control of the photo degradation of a fluorene-vinylene-phenylene based-polymer, poly(9,9-di-hexylfluorenediylvinylene-alt-1,4-phenylenevinylene) (LaPPS16) was achieved by addition of a radical scavenger (RS) (enhancing photo resistance) or a radical initiator (RI) (reducing photo resistance). Photoluminescence, UV-Vis absorption, 1H NMR spectroscopies and gel permeation chromatography (GPC) revealed that the incorporating small amounts of RS or RI is an efficient way to control the rates of the photo-oxidation reactions, and thus to obtain the conjugated polymer with foreseeable degradation rates for applications in blue-light sensitive detectors for neonatal phototherapy. © 2014 Elsevier B.V. All rights reserved.1463212217Chiang, C.K., Finger, C.R., Park, Y.W., Heeger, A.J., Shirakawa, H., Louis, E.J., Graus, C., Macdiarmid, A.G., (1997) Phys. Ver. Lett., 39, p. 1098Akcelrud, L., (2003) Prog. Polym. Sci., 28, pp. 875-962Sariciftci, N.S., (1999) Curr. Opin. Solid State Mater. Sci., 4, pp. 373-378Friend, R.H., Gymer, R.W., Holmes, A.B., Burroughes, J.H., Marks, R.N., Taliani, C., Bradley, D.D.C., Salaneck, W.R., (1999) Nature, 397, pp. 121-128Bao, Z., (2000) Adv. Mater., 12, pp. 227-230Torsi, L., Dodabalapur, A., Rothberg, L.J., Fung, A.W.P., Katz, H.E., (1996) Science, 272, pp. 1462-1464Papadimitrakopoulos, F., Konstadinidis, K., Miller, T.M., Opila, R., Chandross, E.A., Galvin, M.E., (1994) Chem. Mater., 6, pp. 1563-1568Scott, J.C., Kaufman, J.H., Brock, P.J., Dipietro, R., Salem, J., Goitia, J.A., (1996) J. Appl. Phys., 79, pp. 2745-2751Scurlock, R.D., Wang, B., Ogilby, P.R., Sheats, J.R., Clough, R.L., (1995) J. Am. Chem. Soc., 117, pp. 10194-10202Zyung, T., Kim, J., (1995) Appl. Phys. Lett., 67, pp. 3420-3422Atreya, M., Lia, S., Kanga, E.T., Neoha, K.G., Mab, Z.H., Tanb, K.L., Huang, W., (1999) Polym. Degrad. Stab., 65, pp. 287-296Chambon, S., Manceau, M., Firon, M., Cros, S., Rivaton, A., Gardette, J., (2008) Polymer, 49, pp. 3288-3294Low, H.Y., (2002) Thin Solid Films, 413, pp. 160-166Bliznyuk, V.N., Carter, S.A., Scott, J.C., Klärner, G., Miller, R.D., Mille, D.C., (1999) Macromolecules, 32, pp. 361-369Romero, B., Arredondo, B., Alvarez, A.L., Mallavia, R., Salinas, A., Quintana, X., Oton, J.M., (2009) Solid State Electron., 53, pp. 211-217Kim, Y.H., Bout, D.A.V., (2009) Appl. Phys. A, 95, pp. 241-247Liu, L., Tang, S., Liu, M., Xie, Z., Zhang, W., Lu, P., Hanif, M., Ma, Y., (2006) J. Phys. Chem. B, 110, pp. 13734-13740Heil, H., Andress, G., Schmechel, R., Von Seggern, H., Steiger, J., Bonrad, K., Sprengard, R., (2005) J. Appl. Phys., 97Scherf, U., List, E.J.W., (2002) Adv. Mater., 14, pp. 477-487List, E.J.W., Guentner, R., De Freitas, P.S., Scherf, U., (2002) Adv. Mater., 14, pp. 374-378Vasconcelos, C.K.B., Bianchi, R.F., (2009) Sens. Actuators B Chem., 143, pp. 30-34Ferreira, G.R., De Vasconcelos, C.K.B., Silva, M.M., Santos, F.A., Pires, J.G., Duarte, A.S., Bianchi, A.G.C., Bianchi, R.F., (2010) Mater. Res. Soc. Symp. Proc., 1209. , P03-03-P03-09Schimitberger, T., Ferreira, G.R., Akcelrud, L., Saraiva, M.F., Bianchi, R.F., (2012) Sens. Actuators B Chem., 168, pp. 131-137Silva, E.A.B., Borin, J.F., Nicolucci, P., Graeff, C.F.O., Ghilardi Netto, T., Bianchi, R.F., (2005) Appl. Phys. Lett., 86. , 902-1-902-3Ranby, B., Rabek, J.F., (1975) Photodegradation, Photo-oxidation, and Photostabilization of PolymersPrinciples and Applications, , Wiley-Interscience Publication LondonNowacki, B., Deazevedo, E.R., Akcelrud, L., (2011) Polym. Test., 30, pp. 342-347Nowacki, B., Iamazaki, E., Cirpan, A., Karasz, F., Atvars, T.D.Z., Akcelrud, L., (2009) Polymer, 50, pp. 6057-6064Ferreira, G.R., Nowacki, B., Deazevedo, E.R., Akcelrud, L.C., Bianchi, R.F., (2011) Mater. Res. Soc. Symp. Proc., 1286Tozoni, J.R., Guimarães, F.E.G., Atvars, T.D.Z., Nowacki, B., Marlleta, A., Akcelrud, L., Bonagamba, T.J., (2011) Eur. Polym. J., 47, pp. 2259-2265Tozoni, J.R., Guimarães, F.E.G., Atvars, T.D.Z., Nowacki, B., Marlleta, A., Akcelrud, L., Bonagamba, T.J., (2008) Eur. Polym. J., 45, pp. 2467-247