Reversible photoreaction of C60-containing poly(vinyl alcohol)

Yun Chen; Chang Hsin Tsai

doi:10.1002/(sici)1097-4628(19981017)70:3<605::aid-app23>3.0.co;2-y

Reversible photoreaction of C₆₀-containing poly(vinyl alcohol)

Yun Chen, Chang Hsin Tsai

Department of Chemical Engineering

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

12 Citations (Scopus)

Abstract

Poly(vinyl alcohol) (PVA) was reacted with strong base NaH to convert its pendant hydroxy to oxy anions, followed with nucleophilic addition to buckminster-fullerene-C₆₀. The resulted PVA(C₆₀^-Na⁺)_n products were then converted to PVA(C₆₀H)_n by stirring with a strong acid cation exchanger of the H⁺ form. The reduced viscosities of PVA(C₆₀H)_n decreases with amount of C₆₀, and are between 0.38 and 0.66 dL/g compared to 1.97 dL/g of the original PVA. Repeated photocrosslinking under 300 nm light and photocleavage under 254 nm light of these C₆₀-containing PVAs were investigated in DMSO by tracing their UV absorption variations at 325 nm (maximum absorption of C₆₀H). It is confirmed that both PVA(C₆₀H)_n exhibit excellent reversibility at least under the observed three cycles.

Original language	English
Pages (from-to)	605-611
Number of pages	7
Journal	Journal of Applied Polymer Science
Volume	70
Issue number	3
DOIs	https://doi.org/10.1002/(sici)1097-4628(19981017)70:3<605::aid-app23>3.0.co;2-y
Publication status	Published - 1998 Oct 17

All Science Journal Classification (ASJC) codes

Chemistry(all)
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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10.1002/(sici)1097-4628(19981017)70:3<605::aid-app23>3.0.co;2-y

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title = "Reversible photoreaction of C60-containing poly(vinyl alcohol)",

abstract = "Poly(vinyl alcohol) (PVA) was reacted with strong base NaH to convert its pendant hydroxy to oxy anions, followed with nucleophilic addition to buckminster-fullerene-C60. The resulted PVA(C60-Na+)n products were then converted to PVA(C60H)n by stirring with a strong acid cation exchanger of the H+ form. The reduced viscosities of PVA(C60H)n decreases with amount of C60, and are between 0.38 and 0.66 dL/g compared to 1.97 dL/g of the original PVA. Repeated photocrosslinking under 300 nm light and photocleavage under 254 nm light of these C60-containing PVAs were investigated in DMSO by tracing their UV absorption variations at 325 nm (maximum absorption of C60H). It is confirmed that both PVA(C60H)n exhibit excellent reversibility at least under the observed three cycles.",

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AU - Tsai, Chang Hsin

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N2 - Poly(vinyl alcohol) (PVA) was reacted with strong base NaH to convert its pendant hydroxy to oxy anions, followed with nucleophilic addition to buckminster-fullerene-C60. The resulted PVA(C60-Na+)n products were then converted to PVA(C60H)n by stirring with a strong acid cation exchanger of the H+ form. The reduced viscosities of PVA(C60H)n decreases with amount of C60, and are between 0.38 and 0.66 dL/g compared to 1.97 dL/g of the original PVA. Repeated photocrosslinking under 300 nm light and photocleavage under 254 nm light of these C60-containing PVAs were investigated in DMSO by tracing their UV absorption variations at 325 nm (maximum absorption of C60H). It is confirmed that both PVA(C60H)n exhibit excellent reversibility at least under the observed three cycles.

AB - Poly(vinyl alcohol) (PVA) was reacted with strong base NaH to convert its pendant hydroxy to oxy anions, followed with nucleophilic addition to buckminster-fullerene-C60. The resulted PVA(C60-Na+)n products were then converted to PVA(C60H)n by stirring with a strong acid cation exchanger of the H+ form. The reduced viscosities of PVA(C60H)n decreases with amount of C60, and are between 0.38 and 0.66 dL/g compared to 1.97 dL/g of the original PVA. Repeated photocrosslinking under 300 nm light and photocleavage under 254 nm light of these C60-containing PVAs were investigated in DMSO by tracing their UV absorption variations at 325 nm (maximum absorption of C60H). It is confirmed that both PVA(C60H)n exhibit excellent reversibility at least under the observed three cycles.

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Reversible photoreaction of C₆₀-containing poly(vinyl alcohol)

Abstract

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