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Polyhedral Oligomeric Silsesquioxanes with Controlled Structure: Formation and Application in New Si-Based Polymer Systems

  • Yusuke KawakamiEmail author
  • Yuriko Kakihana
  • Akio Miyazato
  • Seiji Tateyama
  • Md. Asadul Hoque
Chapter
Part of the Advances in Polymer Science book series (POLYMER, volume 235)

Abstract

Features of the formation of cage oligomeric silsesquioxanes, including several new compounds, are described and possible reaction mechanism is proposed. Synthesis of phenyl oligomeric silsesquioxanes selectively functionalized at the 4-position is reported. Formation and utilization of incompletely condensed oligomeric silsesquioxanes are also described.

Keywords

Cage oligomeric silsesquioxane Cage scrambling Completely and incompletely condensed oligomeric silsesquioxane Functionalization Higher order oligomeric silsesquioxane Hydrolysis Polymer Trifunctional silane 

Abbreviations

AP

Azidopropyl

4-BrPh

4-Bromo-substituted phenyl

BzTMAH

Benzyltrimethylammonium hydroxide

CHCl3

Chloroform

dba

Dibenzylideneacetone

DMF

N,N-Dimethylformamide

DMS

Dimethylsilyl

dvs

1,3-Divinyl-1,1,3,3-tetramethyldisiloxane

Et

Ethyl

EtOH

Ethanol

GPC

Gel permeation chromatography

i-Bu

2-Methylpropyl

i-Bu7T8Cl

1-Chloro-3,5,7,9,11,13,15-hepta(2-methylpropyl)-pentacyclo[9.5.1.13, 9.15, 15.17, 13]octasiloxane

i-Bu7T8H

1-Hydro-3,5,7,9,11,13,15-hepta(2-methylpropyl)-pentacyclo[9.5.1.13, 9.15, 15.17, 13]octasiloxane

i-Bu7T8OH

1-Hydroxy-3,5,7,9,11,13,15-hepta(2-methylpropyl)-pentacyclo[9.5.1.13, 9.15, 15.17, 13]octasiloxane

i-Bu7T7-triol

1,3,5,7,9,11,14-Hepta(2-methylpropyl)-tricyclo[7.3.3.15, 11]heptasiloxane-3,7,14-triol

i-Bu7T8ODMS

1-[Di(methylsilyl)oxy]-3,5,7,9,11,13,15-hepta(2-methylpropyl)pentacyclo[9.5.1.13, 9.15, 15.17, 13]-octasiloxane

i-Bu,H;i-Bu,H-B10

5,15-Di(2-methylpropyl)-5,15-dihydro-1,3,7,9,11,13,17,19-octaphenylpentacylo[11.7.1.13, 11.17, 19.19, 17]decasiloxane

i-Bu,OH;i-Bu,OH-B10

5,15-Di(2-methylpropyl)-5,15-dihydroxy-1,3,7,9,11,13,17,19-octaphenylpentacylo[11.7.1.13, 11.17, 19.19, 17]decasiloxane

i-Pr

1-Methylethyl

LAH

Lithium aluminum hydride

M

Methyl

M2B9-diol

3,3-Dimethyl-1,5,7,9,11,13,15,17-octaphenyl-tetracyclo[11.5.1.15, 11.17, 17]nonasiloxane-9,15-diol

M2;BS-B10

5,5-Dimethyl-15,15-propylene-1,3,7,9,11,13,17,19-octaphenylpentacyclo[11.7.1.13, 11.17, 19.19, 17]-decasiloxane

M,EP;M,EP-B10

5,15-Di[(2-triethoxysilyl)ethyl]-5,15-dimethyl-1,3,7,9,11,13,17,19-octaphenyl-pentacyclo[11.7.1.13, 11.17, 19.19, 17]decasiloxane

M,H;M,H-B10

5,15-Dimethyl-5,15-dihydro-1,3,7,9,11,13,17,19-octaphenylpentacyclo[11.7.1.13, 11.17, 19.19, 17]-decasiloxane

M2;M2-B10

5,5,15,15-Tetramethyl-1,3,7,9,11,13,17,19-octaphenyl-pentacyclo[11.7.1.13, 11.17, 19.19, 17]decasiloxane

M,OE;M,OE-B10

5,15-[Di(triethoxysilyl)oxy]-5,15-dimethyl-1,3,7,9,11,13,17,19-octaphenylpentacyclo-[11.7.1.13, 11.17, 19.19, 17]decasiloxane

M,OH;M,OH-B10

5,15-Dimethyl-5,15-dihydroxy-1,3,7,9,11,13,17,19-octaphenylpentacyclo[11.7.1.13, 11.17, 19.19, 17]-decasiloxane

MALDI

Matrix assisted laser desorption ionization

Mn

Number-average molecular weight

MS

Mass spectrometry

Mw

Weight-average molecular weight

NMR

Nuclear magnetic resonance spectroscopy

Np

Naphthyl

Ph

Phenyl

POSS

Polyhedral oligomeric silsesquioxane

Q8

Spherooctasilicate

Rf

Relative distance of development of solutes

SEC

Size exclusion chromatography

TBAF

Tetrabutylammonium fluoride

Td5

5% Weight loss by thermogravimetric analysis

TFB

Tris(pentafluorophenyl)borane

Tg

Glass transition temperature

TGA

Thermogravimetric analysis

THF

Tetrahydrofuran

Tm

Melting temperature

TMS

Trimethylsilyl

TMSPh

Trimethylsilylphenyl

Tn

Number of silicon atoms in the POSS frame structure

TOF

Time of flight

Tolyl

4-Methylphenyl

Ts

Softening temperature

Vi

Vinyl

XRD

X-ray diffraction

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Copyright information

© Springer 2010

Authors and Affiliations

  • Yusuke Kawakami
    • 1
    Email author
  • Yuriko Kakihana
    • 1
  • Akio Miyazato
    • 1
  • Seiji Tateyama
    • 1
  • Md. Asadul Hoque
    • 1
  1. 1.Japan Advanced Institute of Science and Technology (JAIST)NomiJapan

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