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Influence of regio-configuration on the phase diagrams of double chain giant surfactants

文献类型:期刊论文

作者Wang, Xiao-Man1; Shao, Yu1,2; Jin, Peng-Fei1; Jiang, Wenbo3; Hu, Wei4; Yang, Shuguang2; Li, Weihua3; He, Jinlin5; Ni, Peihong5; Zhang, Wen-Bin1
刊名Macromolecules
出版日期2018-02-13
卷号51期号:3页码:1110-1119
ISSN号0024-9297
DOI10.1021/acs.macromol.7b02383
通讯作者Li, weihua(weihuali@fudan.edu.cn) ; He, jinlin(jlhe@suda.edu.cn) ; Zhang, wen-bin(wenbin@pku.edu.cn)
英文摘要It has been established that a minute difference of the primary chemical and topological structures influences the self-assembly behaviors of giant surfactants; however, the regio-configuration effect has been rarely reported. herein, we report a systematic study on the self-assembly behaviors of a series of double-chain giant surfactant regio-isomers, which consist of a hydrophilic polyhedral oligomeric silsesquioxane (poss) head and two identical hydrophobic polystyrene (ps) tails with various molecular weights tethered in para-, meta-, and ortho-configurations, respectively. small-angle x-ray scattering and transmission electron microscopy characterizations have been combined to investigate the phase behaviors of each sample and construct the phase diagrams for the three isomers with respect to the molecular weights of ps tails. it is observed that the regio-configuration significantly impacts the self-assembly behaviors of the giant surfactant isomers, including order-to-disorder (odt) and order-to-order (oot) transitions. in each isomer system, the order-to-disorder transition temperature (t-odt) changes nonmonotonically with the length of ps tails, which is generally similar to the variation of t-odt for block copolymers but also exhibits some peculiar features associated with the rigid conformation of headgroup. with equal length of ps tails, t-odt of the three isomers is in the descending order of ortho > meta > para. there is a pronounced and systematic phase boundary shift to lower volume fraction of ps (f(ps)) and to lower temperatures from para to meta to ortho. this is closely related to the compounds regio-configuration and rigid 3d conformation of the headgroup and may be understood through the lower effective f(ps) as two tails get further apart. these findings elucidate the sophisticated effect of the regio-configuration on self-assembly behaviors. it suggests regio-configuration as an additional factor in tuning the self-assembly of giant surfactants at sub-10 nm or even sub-5 nm length scales, which is of significant technical importance.
WOS关键词ORDER-DISORDER TRANSITION ; BLOCK-COPOLYMER ; SHAPE AMPHIPHILES ; THIN-FILMS ; INTERACTION PARAMETER ; THERMAL-PROPERTIES ; LITHOGRAPHY ; METHACRYLATE) ; NANOSTRUCTURES ; NANOPARTICLES
WOS研究方向Polymer Science
WOS类目Polymer Science
语种英语
出版者AMER CHEMICAL SOC
WOS记录号WOS:000425473600048
URI标识http://www.irgrid.ac.cn/handle/1471x/2177988
专题高能物理研究所
通讯作者Li, Weihua; He, Jinlin; Zhang, Wen-Bin
作者单位1.Peking Univ, Coll Chem & Mol Engn, Ctr Soft Matter Sci & Engn, Key Lab Polymer Chem & Phys,Minist Educ, Beijing 100871, Peoples R China
2.Donghua Univ, Ctr Adv Low Dimens Mat, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
3.Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China
4.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
5.Soochow Univ, State & Local Joint Engn Lab Novel Funct Polymer, Jiangsu Key Lab Adv Funct Polymer Design & Applic, Suzhou Key Lab Macromol Design & Precis Syn,Coll, Suzhou 215123, Peoples R China
推荐引用方式
GB/T 7714
Wang, Xiao-Man,Shao, Yu,Jin, Peng-Fei,et al. Influence of regio-configuration on the phase diagrams of double chain giant surfactants[J]. Macromolecules,2018,51(3):1110-1119.
APA Wang, Xiao-Man.,Shao, Yu.,Jin, Peng-Fei.,Jiang, Wenbo.,Hu, Wei.,...&Zhang, Wen-Bin.(2018).Influence of regio-configuration on the phase diagrams of double chain giant surfactants.Macromolecules,51(3),1110-1119.
MLA Wang, Xiao-Man,et al."Influence of regio-configuration on the phase diagrams of double chain giant surfactants".Macromolecules 51.3(2018):1110-1119.

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