02448nas a2200193 4500008004100000022001400041245011800055210006900173260009900242300001200341490000700353520167500360653002102035653000902056653002102065100002002086700001702106856013102123 2015 eng d a0032-386100aSelf-assembly directed template photopolymerization of perylenebisimide-poly (4-vinylpyridine): nano organization0 aSelfassembly directed template photopolymerization of perylenebi aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcMAY a115-1230 v653 a

A perylene bisimide derivative (PDP-UPBIAcry) having hydroxyl moieties at one termini and polymerizable acrylic units at the other termini was supramolecularly complexed with the pyridine units of Poly (4-vinyl pyridine) (P4VP), followed by photoinduced polymerization of the acrylic units to obtain lamellar organization in the <10 nm range. H-1 NMR studies including variable temperature (20 degrees C-70 degrees C) measurements were undertaken in DMSO-d(6) (anhydrous, extra dry) to understand the interaction between PDP-UPBIAcry and P4VP. The aromatic perylene protons of PDP-UPBIAcry registered an upfield chemical shift while the pyridine protons of P4VP exhibited small downfield shift in their 1:1 supramolecular complex. The hydrogen bonding interaction between pyridyl nitrogen and phenolic OH group was also traced in non-polar media like CDCl3 in model complexes of 4-vinyl pyridine (4VP) with PDP-UPBIAcry. Wide angle X-ray diffraction (WXRD) technique was used to study the bulk structure. Transmission electron microscopy (TEM) imaging revealed highly ordered layered assembly formed upon complexation. Observation from DFT energy minimization studies were correlated with X-ray diffraction data of the supramolecular complex [P4VP (PDP-UPBIAcry)](1.0) to understand the nature of packing of PDP-UPBIAcry that lead to the formation of highly ordered lamellar stacks alternating with P4VP. The higher ordering in the supramolecular polymer complex was also confirmed by the quenching of fluorescence and reduced fluorescence life times of thin solid films of the [P4VP Poly(PDP-UPBIAcry)](1.0) sample. (C) 2015 Elsevier Ltd. All rights reserved.

10ahydrogen bonding10aP4VP10aPerylenebisimide1 aShinde, Shekhar1 aAsha, S., K. uhttps://library.ncl.res.in/content/self-assembly-directed-template-photopolymerization-perylenebisimide-poly-4-vinylpyridine-102444nas 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