Organic-skinned inorganic nanoparticles: surface-confined polymerization of 6-(3-thienyl) hexanoic acid bound to nanocrystalline TiO 2

Viswanathan S. Saji; Yimhyun Jo; Hoi Ri Moon; Yongseok Jun; Hyun Kon Song

doi:10.1186/1556-276X-6-521

Organic-skinned inorganic nanoparticles: surface-confined polymerization of 6-(3-thienyl) hexanoic acid bound to nanocrystalline TiO ₂

Viswanathan S. Saji, Yimhyun Jo, Hoi Ri Moon, Yongseok Jun, Hyun Kon Song

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

There are many practical difficulties in direct adsorption of polymers onto nanocrystalline inorganic oxide surface such as Al ₂O ₃ and TiO ₂ mainly due to the insolubility of polymers in solvents or polymer agglomeration during adsorption process. As an alternative approach to the direct polymer adsorption, we propose surface-bound polymerization of pre-adsorbed monomers. 6-(3-Thienyl)hexanoic acid (THA) was used as a monomer for poly[3-(5- carboxypentyl)thiophene-2,5-diyl] (PTHA). PTHA-coated nanocrystalline TiO ₂/FTO glass electrodes were prepared by immersing THA-adsorbed electrodes in FeCl ₃ oxidant solution. Characterization by ultraviolet/visible/infrared spectroscopy and thermal analysis showed that the monolayer of regiorandom-structured PTHA was successfully formed from intermolecular bonding between neighbored THA surface-bound to TiO ₂. The anchoring functional groups (-COOH) of the surface-crawling PTHA were completely utilized for strong bonding to the surface of TiO ₂.

Original language	English
Article number	521
Pages (from-to)	1-5
Number of pages	5
Journal	Nanoscale Research Letters
Volume	6
DOIs	https://doi.org/10.1186/1556-276X-6-521
State	Published - 2011

Bibliographical note

Funding Information:
This work was supported by NRF Korea (New Faculty/2009-0063811, WCU/ R31-2008-000-20012-0 and 2010-0029321).

Keywords

Fecl
Nanocrystalline TiO
Surface-bound polymerization
Thiophenes

Access to Document

10.1186/1556-276X-6-521

Cite this

@article{84ed03cc53f2418784084b5218d5d4b9,

title = "Organic-skinned inorganic nanoparticles: surface-confined polymerization of 6-(3-thienyl) hexanoic acid bound to nanocrystalline TiO 2",

abstract = "There are many practical difficulties in direct adsorption of polymers onto nanocrystalline inorganic oxide surface such as Al 2O 3 and TiO 2 mainly due to the insolubility of polymers in solvents or polymer agglomeration during adsorption process. As an alternative approach to the direct polymer adsorption, we propose surface-bound polymerization of pre-adsorbed monomers. 6-(3-Thienyl)hexanoic acid (THA) was used as a monomer for poly[3-(5- carboxypentyl)thiophene-2,5-diyl] (PTHA). PTHA-coated nanocrystalline TiO 2/FTO glass electrodes were prepared by immersing THA-adsorbed electrodes in FeCl 3 oxidant solution. Characterization by ultraviolet/visible/infrared spectroscopy and thermal analysis showed that the monolayer of regiorandom-structured PTHA was successfully formed from intermolecular bonding between neighbored THA surface-bound to TiO 2. The anchoring functional groups (-COOH) of the surface-crawling PTHA were completely utilized for strong bonding to the surface of TiO 2.",

keywords = "Fecl, Nanocrystalline TiO, Surface-bound polymerization, Thiophenes",

author = "Saji, {Viswanathan S.} and Yimhyun Jo and Moon, {Hoi Ri} and Yongseok Jun and Song, {Hyun Kon}",

note = "Funding Information: This work was supported by NRF Korea (New Faculty/2009-0063811, WCU/ R31-2008-000-20012-0 and 2010-0029321).",

year = "2011",

doi = "10.1186/1556-276X-6-521",

language = "English",

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journal = "Nanoscale Research Letters",

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T2 - surface-confined polymerization of 6-(3-thienyl) hexanoic acid bound to nanocrystalline TiO 2

AU - Saji, Viswanathan S.

AU - Jo, Yimhyun

AU - Moon, Hoi Ri

AU - Jun, Yongseok

AU - Song, Hyun Kon

N1 - Funding Information: This work was supported by NRF Korea (New Faculty/2009-0063811, WCU/ R31-2008-000-20012-0 and 2010-0029321).

PY - 2011

Y1 - 2011

N2 - There are many practical difficulties in direct adsorption of polymers onto nanocrystalline inorganic oxide surface such as Al 2O 3 and TiO 2 mainly due to the insolubility of polymers in solvents or polymer agglomeration during adsorption process. As an alternative approach to the direct polymer adsorption, we propose surface-bound polymerization of pre-adsorbed monomers. 6-(3-Thienyl)hexanoic acid (THA) was used as a monomer for poly[3-(5- carboxypentyl)thiophene-2,5-diyl] (PTHA). PTHA-coated nanocrystalline TiO 2/FTO glass electrodes were prepared by immersing THA-adsorbed electrodes in FeCl 3 oxidant solution. Characterization by ultraviolet/visible/infrared spectroscopy and thermal analysis showed that the monolayer of regiorandom-structured PTHA was successfully formed from intermolecular bonding between neighbored THA surface-bound to TiO 2. The anchoring functional groups (-COOH) of the surface-crawling PTHA were completely utilized for strong bonding to the surface of TiO 2.

AB - There are many practical difficulties in direct adsorption of polymers onto nanocrystalline inorganic oxide surface such as Al 2O 3 and TiO 2 mainly due to the insolubility of polymers in solvents or polymer agglomeration during adsorption process. As an alternative approach to the direct polymer adsorption, we propose surface-bound polymerization of pre-adsorbed monomers. 6-(3-Thienyl)hexanoic acid (THA) was used as a monomer for poly[3-(5- carboxypentyl)thiophene-2,5-diyl] (PTHA). PTHA-coated nanocrystalline TiO 2/FTO glass electrodes were prepared by immersing THA-adsorbed electrodes in FeCl 3 oxidant solution. Characterization by ultraviolet/visible/infrared spectroscopy and thermal analysis showed that the monolayer of regiorandom-structured PTHA was successfully formed from intermolecular bonding between neighbored THA surface-bound to TiO 2. The anchoring functional groups (-COOH) of the surface-crawling PTHA were completely utilized for strong bonding to the surface of TiO 2.

KW - Fecl

KW - Nanocrystalline TiO

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KW - Thiophenes

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