Section 8-Electronic Properties2-Polyphenylenes

Section 8-Electronic Properties2-Polyphenylenes -...

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Unformatted text preview: “cwomoEEE Logos—ucoo “.38 99:8 .233 mflmxovzfizovo “ngmEEE Louosucoo Egon flea—om .395 -momfixeo EmommEEE EoommEEa wagon , @323 2.928 2590 2590 25.1500 Emzzo EmommEEE 33.35 Ens—02: Emommfifism 33:33 Baov @3285 m6 oov w.m_. 0mm fin ‘ ovm sagas: ,_ I 3:89 295 7 . c288. 6:222 m:o_EE._oEoo >995. E:E_:_._s_ .vom .“N 6me mmSomBEEomE _m 6 92mm 9.53 mmm< Eta TEom «+3 u 33:05:00 . E u as}: 68 v cx v S . 2.63 :9: E :oszxo «ESQ mcoEouzmmn. . w... 0 O O o . \F \F moo}. moo}; :00: man 2“. m U w Em; m vu w a a 33:3 .5 coszxO .3333 ms... 35.321.32.01 82 dm .mmmtmseom Emmi Ba 5:83 “528m 52% . 8.95 3:223 39:2 2 26 :ozmmacoo ho Eme 26. 953m :9: . on u :x 363 EEEoEBBm Ewmmmm . h _. : womf , momf 3V . m N m m .mfovm hm _ 00 m2\ I O 9 w 9 w I o 23%? I o cozwuzoEzom £2,805.06 m-< _ Aw:o_>:m_._o_.3>_0n_ POLYMER SYNTHESIS SOs'Na+ o—/—/ Br Br + (HO)2B~€©>~B(OH)2 Y y=1,2 P 0 2+ Na+_038 d /Pd SOB-N84- of Na+-038 Poly[2,5-di(3—sulfonatopropoxy)-1,4-phenylene] defivafives y=1 : PPP-OPSO3 y=2: PPBP-OPSO3 Communication: Child, A; Reynolds, J. R. Macromolecules 1994, 27, 1975 st SEE Abs. Water Soluble Poly(p-phenylenes) (PPP's) - Sulfonatopropoxy-substituted PPP's synthesized with high degree of polymerization (> 50 rings/chain) some+ SOjNa" of /—/—O /—/—O SOS -Na+ 80:;sz o Electronic spectroscopy. indicates Eg = 3.0 eV and peaks correlate with charge conjugation symmetry breaking theory (Rice 61: al. Phys. Lett. 1994, 73(18), 2504) UV-VIS Spectra of PPP—OPSO; in Water 12 E: (x) U 2.5 __ laps-opac-J at pH e.o' .. _ _ PPP-OP503 8! PH 10-0. 2 .... .. ppP-OPSOg at pH 12.0' ' pH level of reaction medium 1.5 E3 (9134 RM :; 3-0 6V 0.5 0 5.5 6 3.5 4 4.5 5 eV .1 1.5 r 2.5 3 - Solution fluorescence dominated by blue emission with 7km“ at 420 nm - Electrostatic deposition methods used to successfully construct electroluminescent devices which emit blue light (collaboration with M. RubnerlMIT) MAWMOLEQMLis [0101‘]; 2'?) 1‘31 S'_ 6.5 PPP—OPSO3 - PPBP-OPSO3 Seungho Kim and John R. Reynolds University of Florida ...
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This note was uploaded on 05/29/2011 for the course CHM 5511 taught by Professor Graham during the Spring '11 term at University of Florida.

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Section 8-Electronic Properties2-Polyphenylenes -...

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