02444nas a2200265 4500008004100000022001400041245015200055210006900207260006700276300001400343490000700357520143400364653001901798653002901817653000901846653002101855653001801876653003301894653003201927653003001959100001501989700002802004700001702032856012902049 2016 eng d a0887-624X00aP4VP and oligo(phenylenevinylene)-perylenebisimide mixed donor-acceptor supramolecular comb polymer complexes with improved charge carrier mobility0 aP4VP and oligophenylenevinyleneperylenebisimide mixed donoraccep a111 RIVER ST, HOBOKEN 07030-5774, NJ USAbWILEY-BLACKWELLcAUG a2403-24120 v543 a

Random donor-acceptor (D-A) supramolecular comb polymers were formed when hydroxyl functionalized donor and acceptor small molecules based on Oligo(phenylenevinylene) (named OPVCN-OH) and Perylenebisimide (named UPBI-PDP), respectively, were complexed with Poly(4-vinyl pyridine) (P4VP). A series of random D-A supramolecular comb polymers were formed by varying the ratios of UPBI-PDP and OPVCN-OH with P4VP. A 100% P4VP-donor polymer complex [P4VP(OPV1.00)] and a 100% P4VP-acceptor polymer complex [P4VP(UPBI1.00)] were also synthesized and characterized. Complex formation was confirmed by FT-IR and H-1 NMR spectroscopy. Solid state structural studies carried out using small angle X-ray scattering and wide angle X-ray diffraction experiments revealed altered packing of the D and A molecules in the complexes. Transmission electron microscopy images showed lamellar structures in the <10 nm scale for the P4VP(OPV1.00), P4VP(UPBI1.00), and mixed P4VP (D-A) complexes. The effect of the nanoscopic D-A self-assembly on the bulk mobility of the materials was probed using SCLC measurements. The mixed D-A random complexes exhibited ambipolar charge transport characteristics with higher values for the average bulk hole mobility estimate. P4VP(OPV0.25+UPBI0.75) exhibited an average hole mobility in the order of 10(-2) cm(2) V-1 s(-1) and electron mobility 10(-5) cm(2) V-1 s(-1). (C) 2016 Wiley Periodicals, Inc.

10adonor-acceptor10aoligo(phenylenevinylene)10aP4VP10aPerylenebisimide10aSelf-assembly10astructure-property relations10asupramolecular comb polymer10asupramolecular structures1 aSaibal, B.1 aChithiravel, Sundaresan1 aAsha, S., K. uhttps://library.ncl.res.in/content/p4vp-and-oligophenylenevinylene-perylenebisimide-mixed-donor-acceptor-supramolecular-comb02312nas a2200277 4500008004100000022001400041245010400055210006900159260000800228300001200236490000700248520139100255653002301646653002701669653002101696653002901717653000901746653001801755653002901773653003001802100001501832700001901847700002001866700001701886856013101903 2017 eng d a0887-624X00aLiquid crystalline supramolecular crosslinked polymer complexes of ditopic rylenebisimides and P4VP0 aLiquid crystalline supramolecular crosslinked polymer complexes  cMAR a951-9590 v553 a

Perylenebisimide and naphthalenebisimide (PBIPDP and NBI-PDP) end functionalized with pentadecyl phenol is designed as ditopic hydrogen bonding acceptors to form supramolecular crosslinked network with poly(4-vinyl pyridine) (P4VP). The pristine PBI-PDP has been grown as single crystals from DCM-MeOH (dichloromethane-methanol) mixture at room temperature, which revealed a P21 space group. Noticeably, the pentadecyl alkyl chain shields the aromatic perylene core on both sides resulting in the absence of p-p interaction in single-crystal assembly. The naphthalenebisimide derivative exhibits thermotropic liquid crystalline behavior, while both the molecules exhibits lyotropic liquid crystalline phases in tetrahydrofuran (THF), which were characterized using a combination of differential scanning calorimeter, X-ray diffraction, and polarized light microscopy. The hydrogen-bonded complex of both the rylenebisimides with P4VP preserves the mesomorphic properties in THF. The electron transport mobility measured by space charge limited current measurements reveals a two orders of magnitude increase in the charge transport in the P4VP complex compared to that of the pristine molecule. The average electron mobility obtained is mu(e, avg): 10(-3) cm(2)/Vs for P4VP-PBI compared to mu(e, avg): 10(-5) cm(2)/Vs for pristine PBI derivative. (C) 2017 Wiley Periodicals, Inc.

10acrystal structures10aditopic rylenebisimide10ahydrogen bonding10alyotropic liquid crystal10aP4VP10aSelf-assembly10asupramolecular crosslink10asupramolecular structures1 aSaibal, B.1 aNarayan, Rekha1 aChithiravel, S.1 aAsha, S., K. uhttps://library.ncl.res.in/content/liquid-crystalline-supramolecular-crosslinked-polymer-complexes-ditopic-rylenebisimides-and