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<p>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 &lt;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.</p>10ahydrogen bonding10aP4VP10aPerylenebisimide1 aShinde, Shekhar1 aAsha, S., K.  uhttps://library.ncl.res.in/content/self-assembly-directed-template-photopolymerization-perylenebisimide-poly-4-vinylpyridine-101860nas a2200145   4500008004100000245014000041210006900181260000800250300001400258490000700272520126800279100002001547700001701567856013001584       2016                        eng d00aTemperature sensitive emission color tuning and white light emission in segmented OPV polymer: perylene bisimide supramolecular complex0 aTemperature sensitive emission color tuning and white light emis  cNOV  a8134-81450 v493 aAn oligo(phenylenevinylene) (OPV) based segmented polymer (POPV) and its small molecule model compound (SOPV) were designed with a carboxyl functionality in the side chain. The polymer and small molecule were complexed with pyridine functiorialized perylene bisimide (UPBIPy) and the properties of the donor: acceptor (D:A) complexes were compared. Both polymer and small molecule D:A complexes formed lamellar morphologies in the <10 nm length scale, which could be visualized by TEM and AFM imaging. The flexibility of the segmented polymer architecture imparted special properties to the polymer and its complex. The polymer complex (POPVC) exhibited white light emission with CIE color coordinates (0.27, 0.32) due to partial energy transfer from POPV to UPBIPy. The analogous model OPV complex (SOPVC) continued to show characteristic blue OPV emission in the complex also. The higher sensitivity of polymers toward temperature was made use of to tune the emission color in the complex from white (0.27, 0.32) at 30 degrees C to yellow-green (0.29, 0.31) at 100 degrees C and back to white (0.27, 0.31) upon cooling to 30 degrees C. Such a temperature sensitive emission color tuning was not observed in the small molecule complex under identical conditions.1 aShinde, Shekhar1 aAsha, S., K.  uhttps://library.ncl.res.in/content/temperature-sensitive-emission-color-tuning-and-white-light-emission-segmented-opv-polymer02061nas a2200217   4500008004100000022001300041245016400054210007300218260000800291300001400299490000700313520121600320653003501536653002301571653001801594100002001612700002201632700002001654700001701674856015201691       2018                        eng d  a0887624X00aSupramolecular complexes of poly(3‐Hexylthiophene)‐block (and random)‐poly[3‐(2‐(6‐carboxyhexyl)methyl)thiophene] copolymers with perylene bisimide0 aSupramolecular complexes of poly3‐Hexylthiophene‐block and rando  cMAY  a1574-15830 v563 aBlock and random copolymers of poly(3‐hexylthiophene) and poly[3‐(2‐(6‐carboxyhexyl)methyl)thiophene] with side‐chain carboxylic functionality ((P3HT‐b‐P3COOH) and (P3HT‐r‐P3COOH) were developed by Grignard Metathesis (GRIM) polymerization. The carboxylic functionality was introduced in the side chain via the oxazoline route. Both the block and random polythiophene copolymers were complexed with pyridine functionalized perylene bisimide to obtain supramolecular block and random polymer complexes. The complex formation in both systems was confirmed by 1H NMR, WXRD and SAXS studies. An expansion of d spacing upon complex formation was observed in both the block and random copolymer, which could be traced by WXRD. Hole and electron mobilities measured for the supramolecular complexes indicated values which were higher by an order of magnitude for the supramolecular block complex (μh ≈ 2.9 × 10−4 cm2/Vs; μe ≈ 3.1 × 10−6 cm2/Vs) as compared to the random (μh ≈ 1.4 × 10−5 cm2/Vs; μe ≈ 4.7 × 10−7 cm2/Vs) copolymer. These results are indicative of the higher degree of disorder prevailing in the films of random copolymer system compared to the block copolymer.10ablock and random polythiophene10aperylene bisi-mide10aSelf-assembly1 aShinde, Shekhar1 aVijayan, Raaghesh1 aNarayan, K., S.1 aAsha, S., K.  uhttps://library.ncl.res.in/content/supramolecular-complexes-poly3%E2%80%90hexylthiophene%E2%80%90block-and-random%E2%80%90poly3%E2%80%902%E2%80%906