Morphological transformation and photophysical properties of rod-coil poly[2,7-(9,9- Dihexylfluorene)]-block-poly(acrylic acid) in solution

Yi Chih Tung, Wen-Chung Wu, Wen Chang Chen

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

The synthesis, morphology, and photophysical properties of PF-b-PAA with different coil lengths in dilute solutions of dichloromethane/methanol are reported. A tape-like lamellar morphology is observed at a short coil length of PF-b-PAA. As the coil length increases, a large compound micelle, sphere, or vesicle is observed with different methanol contents because of the enhancement of the PAA swelling with methanol and the interfacial tension between the PF core and the PAA corona. Upon further increase of the coil length, an inverted morphology of a sphere or rod with a PF corona and PAA core is first observed but the core/corona is then reversed at a high methanol content as a result of the enhanced solubility of PAA. The morphological transformation leads to a significant variation in optical absorption or fluorescence characteristics because of the possible H-aggregate formation.

Original languageEnglish
Pages (from-to)1838-1844
Number of pages7
JournalMacromolecular Rapid Communications
Volume27
Issue number21
DOIs
Publication statusPublished - 2006 Nov 1

Fingerprint

carbopol 940
Acrylics
Methanol
Acids
Methylene Chloride
Dichloromethane
Micelles
Tapes
Light absorption
Surface tension
Swelling
Solubility
Fluorescence

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Cite this

@article{9b6d730b7540491ab9472f7349ca33f7,
title = "Morphological transformation and photophysical properties of rod-coil poly[2,7-(9,9- Dihexylfluorene)]-block-poly(acrylic acid) in solution",
abstract = "The synthesis, morphology, and photophysical properties of PF-b-PAA with different coil lengths in dilute solutions of dichloromethane/methanol are reported. A tape-like lamellar morphology is observed at a short coil length of PF-b-PAA. As the coil length increases, a large compound micelle, sphere, or vesicle is observed with different methanol contents because of the enhancement of the PAA swelling with methanol and the interfacial tension between the PF core and the PAA corona. Upon further increase of the coil length, an inverted morphology of a sphere or rod with a PF corona and PAA core is first observed but the core/corona is then reversed at a high methanol content as a result of the enhanced solubility of PAA. The morphological transformation leads to a significant variation in optical absorption or fluorescence characteristics because of the possible H-aggregate formation.",
author = "Tung, {Yi Chih} and Wen-Chung Wu and Chen, {Wen Chang}",
year = "2006",
month = "11",
day = "1",
doi = "10.1002/marc.200600518",
language = "English",
volume = "27",
pages = "1838--1844",
journal = "Macromolecular Rapid Communications",
issn = "1022-1336",
publisher = "Wiley-VCH Verlag",
number = "21",

}

Morphological transformation and photophysical properties of rod-coil poly[2,7-(9,9- Dihexylfluorene)]-block-poly(acrylic acid) in solution. / Tung, Yi Chih; Wu, Wen-Chung; Chen, Wen Chang.

In: Macromolecular Rapid Communications, Vol. 27, No. 21, 01.11.2006, p. 1838-1844.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Morphological transformation and photophysical properties of rod-coil poly[2,7-(9,9- Dihexylfluorene)]-block-poly(acrylic acid) in solution

AU - Tung, Yi Chih

AU - Wu, Wen-Chung

AU - Chen, Wen Chang

PY - 2006/11/1

Y1 - 2006/11/1

N2 - The synthesis, morphology, and photophysical properties of PF-b-PAA with different coil lengths in dilute solutions of dichloromethane/methanol are reported. A tape-like lamellar morphology is observed at a short coil length of PF-b-PAA. As the coil length increases, a large compound micelle, sphere, or vesicle is observed with different methanol contents because of the enhancement of the PAA swelling with methanol and the interfacial tension between the PF core and the PAA corona. Upon further increase of the coil length, an inverted morphology of a sphere or rod with a PF corona and PAA core is first observed but the core/corona is then reversed at a high methanol content as a result of the enhanced solubility of PAA. The morphological transformation leads to a significant variation in optical absorption or fluorescence characteristics because of the possible H-aggregate formation.

AB - The synthesis, morphology, and photophysical properties of PF-b-PAA with different coil lengths in dilute solutions of dichloromethane/methanol are reported. A tape-like lamellar morphology is observed at a short coil length of PF-b-PAA. As the coil length increases, a large compound micelle, sphere, or vesicle is observed with different methanol contents because of the enhancement of the PAA swelling with methanol and the interfacial tension between the PF core and the PAA corona. Upon further increase of the coil length, an inverted morphology of a sphere or rod with a PF corona and PAA core is first observed but the core/corona is then reversed at a high methanol content as a result of the enhanced solubility of PAA. The morphological transformation leads to a significant variation in optical absorption or fluorescence characteristics because of the possible H-aggregate formation.

UR - http://www.scopus.com/inward/record.url?scp=33751315313&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33751315313&partnerID=8YFLogxK

U2 - 10.1002/marc.200600518

DO - 10.1002/marc.200600518

M3 - Article

VL - 27

SP - 1838

EP - 1844

JO - Macromolecular Rapid Communications

JF - Macromolecular Rapid Communications

SN - 1022-1336

IS - 21

ER -