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Hydrogen-bonded side-chain

Chao CY, Li X, Ober CK, Osuji C, Thomas EL. Orientational switching of mesogens and microdomains in hydrogen bonded side-chain hquid-crystalline block copolymers using AC electric fields. Adv Funct Mater 2004 14 364-370. [Pg.95]

A chain of hydrogen-bonded side chains apparently provides a pathway for transfer of an impaired electron from the active site to the Tyr 122 radical and from there to the radical generating center.363 The tyrosyl radical can be destroyed by removal of the iron by exposure to 02 or by treatment of ribonucleotide reductases with hydroxyurea, which reduces the radical and also destroys catalytic activity ... [Pg.864]

Interchain Hydrogen-bonding Side-chain interaction Hydration Shell... [Pg.310]

In the next section we will extensively discuss block copolymer-based hydrogen-bonded side-chain polymers. Here we simply note that the above strategy to prepare hollow structures based on P4VP homopolymers can be easily extended to block copolymers. Jiang and coworkers used PS-fc-P2VP di-... [Pg.136]

Homopolymer-Based Hydrogen-Bonded Side-Chain Liquid-Crystalline Copolymers... [Pg.157]

SchetnelO Examples of hydrogen-bonded side-chain liquid-crystalline polymers [92,241, 242]... [Pg.158]

Fig. 33 Illustration of the two extremes, homogeneous and segregated, of the distribution of hydrogen-bonded side chains along the backbone in the case of a substoichiometric composition. System PAA(LC) investigated consists of poly(acrylic acid) and side chains containing cyanobiphenyl mesogens connected with an alkyl chain to imidazole-based hydrogen-bond acceptors (Scheme 10c). Reprinted with permission from [242]. 2006 American Chemical Society... Fig. 33 Illustration of the two extremes, homogeneous and segregated, of the distribution of hydrogen-bonded side chains along the backbone in the case of a substoichiometric composition. System PAA(LC) investigated consists of poly(acrylic acid) and side chains containing cyanobiphenyl mesogens connected with an alkyl chain to imidazole-based hydrogen-bond acceptors (Scheme 10c). Reprinted with permission from [242]. 2006 American Chemical Society...
Scheme 11 Doubly hydrogen-bonded side-chain mesogens [19]... Scheme 11 Doubly hydrogen-bonded side-chain mesogens [19]...
Thomas and coworkers demonstrated that orientational switching of mesogens and microdomains in certain hydrogen-bonded side-chain liquid-... [Pg.162]

Little dichroism was shown at 1658 cm in the polymers containing more amide groups. The magnitude of this band was probably due to the additional absorbance of hydrogen-bonded side-chain amide groups that absorb in the region of 1650 cm (Bellamy, 1956). The position of this band lends support to the presence of side-chain amide associations in the solid amidated polymers. [Pg.204]

Figure 28 Examples of hydrogen-bonding side-chain polymers [91,92],... Figure 28 Examples of hydrogen-bonding side-chain polymers [91,92],...
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Hydrogen bonding chains

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Hydrogen-bonded chains

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