Imperial College London
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Dr Jing Sheng Pang

Central Faculty, Enterprise

Industry Partnerships and Commercialisation Senior Executive
 
 
 
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Contact

 

+44 (0)20 7594 1014j.pang Website

 
 
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Location

 

Faculty BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Knaapila:2008:10.1021/jp806763d,
author = {Knaapila, M and Garamus, VM and Almásy, L and Pang, JS and Forster, M and Gutacker, A and Scherf, U and Monkman, AP},
doi = {10.1021/jp806763d},
journal = {Journal of Physical Chemistry B},
pages = {16415--16421},
title = {Fractal aggregates of polyfluorene-polyaniline triblock copolymer in solution state},
url = {http://dx.doi.org/10.1021/jp806763d},
volume = {112},
year = {2008}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We report on the aggregate structure of a symmetrical A-B-A 9,9-dialkylfluorene/2-alkylaniline "coil-rod-coil" triblock copolymer (or PF/PANI11112-b-PANI11)-consisting of 2-dodecylanilines as A blocks and 9,9-di(3,7,11-trimethyldodecyl)fluorene)s as B blocks-mixed in deuterated toluene, chloroform, and methylcy-clohexane. These mixtures contain micrometer scale aggregates. Small-angle neutron scattering data indicate that the interface between the aggregates and solvents manifests surface fractal-like structure. The upper and lower limit length scales which show fractal character are of the order of > 100 and 15 nm. The surface fractal dimension D s varies from 2.2 to 2.8. The data show that stiff polyfluorene (PF) segments (persistence length ≥9.5 nm, diameter ~ 2 nm) of PF/PANI11112-b-PANI11 are dissolved down to the molecular level. Photoluminescence data indicate that most PF units are isolated from both polyaniline (PANi) units and each others. Together with the scattering data, this implies that the disordered interface consists of stiff isolated PF blocks linked together via domains of associated PANi blocks. © 2008 American Chemical Society.
AU  - Knaapila,M
AU  - Garamus,VM
AU  - Almásy,L
AU  - Pang,JS
AU  - Forster,M
AU  - Gutacker,A
AU  - Scherf,U
AU  - Monkman,AP
DO  - 10.1021/jp806763d
EP  - 16421
PY  - 2008///
SN  - 1520-6106
SP  - 16415
TI  - Fractal aggregates of polyfluorene-polyaniline triblock copolymer in solution state
T2  - Journal of Physical Chemistry B
UR  - http://dx.doi.org/10.1021/jp806763d
VL  - 112
ER  -
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