PMID- 29350229
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180730
LR  - 20180730
IS  - 1744-6848 (Electronic)
IS  - 1744-683X (Linking)
VI  - 14
IP  - 7
DP  - 2018 Feb 14
TI  - Aggregate evolution in aqueous solutions of a Gemini surfactant derived from 
      dehydroabietic acid.
PG  - 1210-1218
LID - 10.1039/c7sm02173a [doi]
AB  - Innovations in surfactant structure are a feasible way to probe molecular 
      self-assembly principles. Herein, the solution behaviour of a newly synthesized 
      Gemini surfactant derived from dehydroabietic acid, abbreviated R-(EO)-E-R, was 
      investigated using surface tension, fluorescence, isothermal titration 
      calorimetry (ITC), rheology, freeze-fracture transmission electron microscopy 
      (FF-TEM) and cryogenic transmission electron microscopy (cryo-TEM) methods. 
      R-(EO)-E-R has two large, rigid hydrophobic groups. At low concentrations, 
      R-(EO)-E-R forms micelles with an aggregation number of approximately 10, which 
      is smaller than those of Gemini surfactants containing flexible alkyl tails. In 
      addition, the micellization process is less exothermic because of the rigidity of 
      the hydrophobic portions. As the concentration increases, R-(EO)-E-R without any 
      additives forms wormlike micelles, endowing the solution with an obvious 
      viscoelasticity. Further increases in the concentration lead to the coexistence 
      of single-walled vesicles, double-walled vesicles and rarely observed long, 
      tubular vesicles. This behaviour is attributed to the two large, rigid 
      hydrophobic groups of R-(EO)-E-R, which increase the density of the hydrophobic 
      portion around the ionic head groups and facilitate the formation of aggregates 
      with lower curvatures and asymmetric morphology. Surfactants containing rigid 
      hydrophobic portions are expected to result in more delicate, self-assembled 
      morphologies with broad applications.
FAU - Feng, Lin
AU  - Feng L
AD  - Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, 
      School of Chemical & Materials Engineering, Jiangnan University, Wuxi, Jiangsu 
      214122, China. ccfsbl@jiangnan.edu.cn.
FAU - Xie, Danhua
AU  - Xie D
FAU - Song, Binglei
AU  - Song B
FAU - Zhang, Jiayu
AU  - Zhang J
FAU - Pei, Xiaomei
AU  - Pei X
FAU - Cui, Zhenggang
AU  - Cui Z
LA  - eng
PT  - Journal Article
PL  - England
TA  - Soft Matter
JT  - Soft matter
JID - 101295070
EDAT- 2018/01/20 06:00
MHDA- 2018/01/20 06:01
CRDT- 2018/01/20 06:00
PHST- 2018/01/20 06:00 [pubmed]
PHST- 2018/01/20 06:01 [medline]
PHST- 2018/01/20 06:00 [entrez]
AID - 10.1039/c7sm02173a [doi]
PST - ppublish
SO  - Soft Matter. 2018 Feb 14;14(7):1210-1218. doi: 10.1039/c7sm02173a.