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Synthesis and Photochromic Properties of poly(4-vinylpyridine-co-styrene) With Pendant Spiroxazine Moieties

Synthesis and Photochromic Properties of poly(4-vinylpyridine-co-styrene) With Pendant Spiroxazine Moieties

Yeong-Soon Gal, Won-Chul Lee, Won Seok Lyoo, Sung-Ho Jin, Kwon Taek Lim, Sung-Hoon Kim

J Nanosci Nanotechnol. 2008 Sep;8(9):4885-8.

PMID: 19049131

Abstract:

An ionic polymer with pendant photochromic moieties was prepared by the reaction of poly(4-vinylpyridine-co-styrene) and 1,3,3-trimethyl-6'-bromohexyloxyspiro[2H]-indol-2,3'-[3H]-naphth[2,1-b][1,4]oxazine. The photochromic reaction in question is caused by the reversible heterolytic cleavage of the C(spiro)-O bond under UV irradiation, yielding the colored form that can return to the colorless form by ring closure under visible light irradiation or in dark. The visible range absorption of the corresponding polymer increased gradually by UV irradiation which is ascribed to the generation of the open merocyanine form from the closed spiro form. The ionic conductivity of polymer increased upon UV irradiation, which brought about the generation of zwitterions form, and subsequently decreased in dark, which brought about the generation of closed spiro form. Sufficient reversibility was found in this polymer and this response was completely synchronized with that in the absorbance changes.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP26222402	Poly(4-vinylpyridine-co-styrene)		26222-40-2	Price

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