Nanostructured semiconductors templated by cholesteryl-oligo(ethylene oxide) amphiphiles

Bryan M. Rabatic, Martin U. Pralle, Gregory N. Tew, Samuel I Stupp

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Lyotropic liquid crystals formed by cholesteryl oligo(ethylene oxide) amphiphiles were used to template the II-VI semiconductor cadmium sulfide. The amphiphiles were synthesized with average chain lengths ranging from 5 to 30 repeats of ethylene oxide and characterized by polarized optical microscopy, differential scanning calorimetry, small-angle X-ray scattering, and mass spectrometry. By varying the ratio of hydrophile coil length to hydrophobe rod length, a transition from lamellar to hexagonal mesophases occurs when the average number of ethylene oxide repeats exceeds 17 units. Inorganic semiconductor templating with these cholesterol-based amphiphiles yields CdS particles with either lamellar or hexagonal nanostructuring. The morphology of the lamellar particles is oblong with lengths of up to 400 nm and widths of 150 nm, whereas that of the hexagonal particles is typically spherical with diameters averaging 200 nm. The nanostructure of the particles consists of either periodic lamellar or hexagonal arranged pores with dimensions similar to those of the organic template.

Original languageEnglish
Pages (from-to)1249-1255
Number of pages7
JournalChemistry of Materials
Volume15
Issue number6
DOIs
Publication statusPublished - Mar 25 2003

Fingerprint

Ethylene Oxide
Amphiphiles
Ethylene
Semiconductor materials
Oxides
Cadmium sulfide
Liquid Crystals
Cholesterol
X ray scattering
Chain length
Liquid crystals
Optical microscopy
Mass spectrometry
Differential scanning calorimetry
Nanostructures

ASJC Scopus subject areas

  • Materials Science(all)
  • Materials Chemistry

Cite this

Nanostructured semiconductors templated by cholesteryl-oligo(ethylene oxide) amphiphiles. / Rabatic, Bryan M.; Pralle, Martin U.; Tew, Gregory N.; Stupp, Samuel I.

In: Chemistry of Materials, Vol. 15, No. 6, 25.03.2003, p. 1249-1255.

Research output: Contribution to journalArticle

Rabatic, Bryan M. ; Pralle, Martin U. ; Tew, Gregory N. ; Stupp, Samuel I. / Nanostructured semiconductors templated by cholesteryl-oligo(ethylene oxide) amphiphiles. In: Chemistry of Materials. 2003 ; Vol. 15, No. 6. pp. 1249-1255.
@article{cd2fa519f82b4102b7acfa8ef3848f2b,
title = "Nanostructured semiconductors templated by cholesteryl-oligo(ethylene oxide) amphiphiles",
abstract = "Lyotropic liquid crystals formed by cholesteryl oligo(ethylene oxide) amphiphiles were used to template the II-VI semiconductor cadmium sulfide. The amphiphiles were synthesized with average chain lengths ranging from 5 to 30 repeats of ethylene oxide and characterized by polarized optical microscopy, differential scanning calorimetry, small-angle X-ray scattering, and mass spectrometry. By varying the ratio of hydrophile coil length to hydrophobe rod length, a transition from lamellar to hexagonal mesophases occurs when the average number of ethylene oxide repeats exceeds 17 units. Inorganic semiconductor templating with these cholesterol-based amphiphiles yields CdS particles with either lamellar or hexagonal nanostructuring. The morphology of the lamellar particles is oblong with lengths of up to 400 nm and widths of 150 nm, whereas that of the hexagonal particles is typically spherical with diameters averaging 200 nm. The nanostructure of the particles consists of either periodic lamellar or hexagonal arranged pores with dimensions similar to those of the organic template.",
author = "Rabatic, {Bryan M.} and Pralle, {Martin U.} and Tew, {Gregory N.} and Stupp, {Samuel I}",
year = "2003",
month = "3",
day = "25",
doi = "10.1021/cm020899e",
language = "English",
volume = "15",
pages = "1249--1255",
journal = "Chemistry of Materials",
issn = "0897-4756",
publisher = "American Chemical Society",
number = "6",

}

TY - JOUR

T1 - Nanostructured semiconductors templated by cholesteryl-oligo(ethylene oxide) amphiphiles

AU - Rabatic, Bryan M.

AU - Pralle, Martin U.

AU - Tew, Gregory N.

AU - Stupp, Samuel I

PY - 2003/3/25

Y1 - 2003/3/25

N2 - Lyotropic liquid crystals formed by cholesteryl oligo(ethylene oxide) amphiphiles were used to template the II-VI semiconductor cadmium sulfide. The amphiphiles were synthesized with average chain lengths ranging from 5 to 30 repeats of ethylene oxide and characterized by polarized optical microscopy, differential scanning calorimetry, small-angle X-ray scattering, and mass spectrometry. By varying the ratio of hydrophile coil length to hydrophobe rod length, a transition from lamellar to hexagonal mesophases occurs when the average number of ethylene oxide repeats exceeds 17 units. Inorganic semiconductor templating with these cholesterol-based amphiphiles yields CdS particles with either lamellar or hexagonal nanostructuring. The morphology of the lamellar particles is oblong with lengths of up to 400 nm and widths of 150 nm, whereas that of the hexagonal particles is typically spherical with diameters averaging 200 nm. The nanostructure of the particles consists of either periodic lamellar or hexagonal arranged pores with dimensions similar to those of the organic template.

AB - Lyotropic liquid crystals formed by cholesteryl oligo(ethylene oxide) amphiphiles were used to template the II-VI semiconductor cadmium sulfide. The amphiphiles were synthesized with average chain lengths ranging from 5 to 30 repeats of ethylene oxide and characterized by polarized optical microscopy, differential scanning calorimetry, small-angle X-ray scattering, and mass spectrometry. By varying the ratio of hydrophile coil length to hydrophobe rod length, a transition from lamellar to hexagonal mesophases occurs when the average number of ethylene oxide repeats exceeds 17 units. Inorganic semiconductor templating with these cholesterol-based amphiphiles yields CdS particles with either lamellar or hexagonal nanostructuring. The morphology of the lamellar particles is oblong with lengths of up to 400 nm and widths of 150 nm, whereas that of the hexagonal particles is typically spherical with diameters averaging 200 nm. The nanostructure of the particles consists of either periodic lamellar or hexagonal arranged pores with dimensions similar to those of the organic template.

UR - http://www.scopus.com/inward/record.url?scp=0037466069&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037466069&partnerID=8YFLogxK

U2 - 10.1021/cm020899e

DO - 10.1021/cm020899e

M3 - Article

VL - 15

SP - 1249

EP - 1255

JO - Chemistry of Materials

JF - Chemistry of Materials

SN - 0897-4756

IS - 6

ER -