Precise polyethylene derivatives bearing mesogenic side-chains: delicate self-assembly depending on graft density

2020 ◽  
Vol 11 (8) ◽  
pp. 1454-1461 ◽  
Author(s):  
Wen-Ying Chang ◽  
Dong Shi ◽  
Xu-Qiang Jiang ◽  
Jia-Di Jiang ◽  
Yang Zhao ◽  
...  
Keyword(s):  
Self Assembly ◽  
Spacing Effect ◽  
Spatial Arrangement ◽  
Side Chain ◽  
Side Chains ◽  
Local Coupling ◽  
Graft Density

Precise polyethylene derivatives bearing mesogenic side-chains demonstrate a sophisticated side-chain spacing effect on the local coupling and spatial arrangement of the backbone and side-chains.

Effects of side chains of oxatub[4]arene on its conformational interconversion, molecular recognition and macroscopic self-assembly

2017 ◽  
Vol 53 (93) ◽  
pp. 12572-12575 ◽  
Author(s):  
Liu-Pan Yang ◽  
Fei Jia ◽  
Fangfang Pan ◽  
Zhi-Sheng Pan ◽  
Kari Rissanen ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Chain Length ◽  
Self Assembly ◽  
Side Chain ◽  
Side Chains ◽  
Side Chain Length ◽  
Conformational Interconversion ◽  
Assembly Behavior

The side-chain length of oxatub[4]arenes was shown to affect its conformational interconversion, molecular recognition and macroscopic self-assembly behavior.

Hierarchical superstructures of norbornene-based polymers depending on dendronized side-chains

2016 ◽  
Vol 7 (33) ◽  
pp. 5304-5311 ◽  
Author(s):  
Dae-Yoon Kim ◽  
Dong-Gue Kang ◽  
Suyong Shin ◽  
Tae-Lim Choi ◽  
Kwang-Un Jeong
Keyword(s):  
Self Assembly ◽  
Ring Opening ◽  
Main Chain ◽  
The Self ◽  
Side Chain ◽  
Side Chains ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Main Chain Polymers

For understanding the self-assembly behaviours of norbornene-based main-chain polymers depending on side-chain pendants, a series of polynorbornenes containing the programmed dendrons is newly designed and successfully synthesized via ring opening metathesis polymerization.

Influence of side-chain interactions on the self-assembly of discotic tricarboxyamides: a crystallographic insight

RSC Advances ◽  
2015 ◽  
Vol 5 (40) ◽  
pp. 31845-31851 ◽  
Author(s):  
Arpita Paikar ◽  
Apurba Pramanik ◽  
Debasish Haldar
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Side Chain ◽  
Side Chains ◽  
Fiber Network

Side chains interactions promote the self-assembly of discotic tricarboxyamides to form an entangled fiber network and thermo responsive gel.

Phase Transitions in Polymers Containing Long Self-Assembled CH2 Sequences in the Side Chain: A Positron Lifetime Study

2010 ◽  
Vol 666 ◽  
pp. 71-74 ◽  
Author(s):  
Yang Yu ◽  
Günter Dlubek ◽  
Reinhard Krause-Rehberg ◽  
Mario Beiner ◽  
Elke Hempel
Keyword(s):  
Self Assembly ◽  
Positron Lifetime ◽  
Side Chain ◽  
Strong Increase ◽  
Side Chains ◽  
Reverse Effect ◽  
Alkyl Methacrylate ◽  
Short Side ◽  
The Mean ◽  
Hexyl Methacrylate

Positron lifetime annihilation spectroscopy (PALS) was used to study the temperature- dependence of sub-nanometer size local free volumes in two atactic poly(n-octadecyl methacrylate)s (PODMA) with different molecular weight. These materials exhibit short range layered structure with a self-assembly and crystallization of side chains. From the ortho-positronium (o-Ps) lifetime the size of free volume holes and its distribution are calculated. At a temperature Tm=311 ± 5 K, the mean hole volume <vh> shows an abrupt and strong increase from 0.15 nm3 to 0.2 nm3, which comes from the melting of side-chains. The reverse effect, attributed to side chain crystallization, was observed during cooling the samples at slightly lower temperatures. The lifetime result of PODMA is compared with semifluorinated polyesters in which the side chain has an oxydecylperfluorodecyl structure (-O-(CH2)10-(CF2)9-CF3). Long chain polymers without side-chains such as polyethylene and short side-chain poly(n-alkyl methacrylate)s: poly(methyl methacrylate) (PMMA) and poly(n-hexyl methacrylate) (PHMA) are also compared with these polymers.

Side chain position, length and odd/even effects on the 2D self-assembly of mono-substituted anthraquinone derivatives at the liquid/solid interface

RSC Advances ◽  
2015 ◽  
Vol 5 (113) ◽  
pp. 93337-93346 ◽  
Author(s):  
Yi Hu ◽  
Kai Miao ◽  
Bao Zha ◽  
Xinrui Miao ◽  
Li Xu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Side Chain ◽  
Side Chains ◽  
Solid Interface ◽  
Anthraquinone Derivatives ◽  
Self Assembled

This work provides efficient methods for regulating self-assembled structures by changing the position, length and odd/even properties of the side chains.

An Aqueous Supramolecular Side-Chain Polymer Designed for Molecular Loading

2010 ◽  
Vol 63 (4) ◽  
pp. 627 ◽  
Author(s):  
Jin Geng ◽  
Dezhi Jiao ◽  
Urs Rauwald ◽  
Oren A. Scherman
Keyword(s):  
Self Assembly ◽  
Chain Transfer ◽  
The Self ◽  
Side Chain ◽  
Side Chains ◽  
Chain Polymer ◽  
Reversible Addition ◽  
Recognition Motifs ◽  
Chain Transfer Polymerization

Hydrophilic copolymers containing recognition motifs based on 2-naphthol moieties in their side chains for the self-assembly with cucurbit[8]uril (CB[8]), have been prepared by reversible addition–fragmentation chain transfer polymerization. Self-assembly of the copolymer with both redox sensitive hydrophilic and hydrophobic viologen derivatives in the presence of CB[8] has been investigated.

Synthesis and self-assembly of photopolymerizable quarterthiophenes

2006 ◽  
Vol 937 ◽  
Author(s):  
Margarita Garcia ◽  
E.W. Meijer ◽  
Albertus Schenning
Keyword(s):  
Hydrogen Bond ◽  
Self Assembly ◽  
The Self ◽  
Side Chain ◽  
Side Chains ◽  
Aggregate Formation ◽  
Hydrogen Bond Interactions ◽  
Π Stacking ◽  
Self Assembled ◽  
Polymerizable Group

ABSTRACTA variety of α, α'-subtituted quaterthiophenes containing ester, amide and polymerizable side chains have been synthesized and fully characterized. The self-assembly properties of these oligothiophenes were studied as function of the side chain. Introduction of amide functionalities highly promotes the self-assembly via π-stacking and hydrogen bond interactions, while the lack of amides prevent aggregate formation. Initial experiments show that by introducing a sorbyl moiety as a polymerizable group it is possible to achieve covalent fixation of the oligothiophene units in the self-assembled state.

Impact of constitution of the terthiophene–vinylene conjugated side chain on the optical and photovoltaic properties of two-dimensional polythiophenes

2014 ◽  
Vol 16 (45) ◽  
pp. 25111-25120 ◽  
Author(s):  
Chuen-Yo Hsiow ◽  
Rathinam Raja ◽  
Chun-Yao Wang ◽  
Yu-Hsiang Lin ◽  
Yu-Wen Yang ◽  
...  
Keyword(s):  
Spatial Arrangement ◽  
Side Chain ◽  
Side Chains ◽  
Two Dimensional ◽  
Photovoltaic Properties ◽  
Photovoltaic Characteristics

The effects of the spatial arrangement of the conjugated side chains of 2-D polymers on their optical, electrochemical, and photovoltaic characteristics were investigated.

scholarly journals Surface induced self-organization of comb-like macromolecules

2011 ◽  
Vol 2 ◽  
pp. 569-584 ◽  
Author(s):  
Konstantin I Popov ◽  
Vladimir V Palyulin ◽  
Martin Möller ◽  
Alexei R Khokhlov ◽  
Igor I Potemkin
Keyword(s):  
Ultrathin Films ◽  
Self Assembly ◽  
Self Organization ◽  
Side Chain ◽  
Spontaneous Curvature ◽  
Side Chains ◽  
Polymer Architectures ◽  
Different Types ◽  
Surface Domains ◽  
The Stability

We present a review of the theoretical and experimental evidence for the peculiar properties of comb copolymers, demonstrating the uniqueness of these materials among other polymer architectures. These special properties include an increase in stiffness upon increasing side-chain length, the spontaneous curvature of adsorbed combs, rod–globule transition, and specific intramolecular self-assembly. We also propose a theory of chemically heterogeneous surface nanopattern formation in ultrathin films of comblike macromolecules containing two different types (A and B) of incompatible side chains (so-called binary combs). Side chains of the binary combs are strongly adsorbed on a surface and segregated with respect to the backbone. The thickness of surface domains formed by the B side chains is controlled by the interaction with the substrate. We predict the stability of direct and inverse disc-, torus- and stripelike nanostructures. Phase diagrams of the film are constructed.

scholarly journals Aqueous Self-assembly of Peptide-Diketopyrrolopyrrole Conjugates with Variation of N-alkyl Side Chain and π-Core Lengths

2021 ◽  
Author(s):  
Sayak Subhra Panda ◽  
John D. Tovar
Keyword(s):  
Chain Length ◽  
Self Assembly ◽  
Photophysical Properties ◽  
Side Chain ◽  
Side Chains ◽  
Alkyl Side Chain ◽  
Organic Electronic ◽  
Side Chain Length ◽  
Alkyl Side Chains ◽  
Electronic Groups

Peptidic sequences when conjugated to π-electronic groups form self-assembled networks of π-electron pathways. These materials hold promise for bio-interfacing charge transporting applications because of their aqueous processability and compatibility. In this work, we incorporated diketopyrrolopyrrole (DPP), a well-established π-core for organic electronic applications, within the peptidic sequence. We embedded different numbers of thiophene rings (2 and 3) on both sides of the DPP to alter the length of the π-cores. We also varied the length of the N-alkyl side chains (methyl, butyl, hexyl) attached to the DPP core. These variations allowed us to explicitly study the effect of π-core and N-alkyl side-chain length on photophysical properties and morphology of the resulting nanomaterials. All of these molecules formed H-type aggregates in the assembled state. Longer π-cores have relatively red-shifted absorption maxima whereas the N-alkyl variation did not present significant photophysical changes.

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