Spiropyran linked to methyl cellulose (SP-MC) is prepared by the treatment of methyl cellulose with 1'-( 2-~arboxyethyl)-3',3'dimethyl-6-nitrospiro [ 2H-benzopyran-2,2'-indoline] as a photofunctional material and photoregulation of some of its properties under irradiation with UV light are investigated. The spiropyran moiety in SP-MC is shown to undergo reversible isomerization from the spiropyran form to the merocyanine form under irradiation with UV light of 1 = 300-400 nm and from the merocyanine form to the spiropyran form under subsequent irradiation with visible light of A > 550 nm, both in solution and in film, although repeated cycles of the alternate irradiation with UV and visible light resulted in considerable fatigue of the spiropyran moieties over up to 20 cycles. The solubility of SP-MC in benzene and the contact angle of the SP-MC film with water are reversibly regulated under alternate irradiations with UV and visible light. A benzene solution of the SP-MC yielded turbidity under irradiation with UV light and the turbidity disappeared under subsequent irradiation with visible light. The contact angle of the SP-MC film with water decreased under irradiation with UV light and then increased under subsequent irradiation with visible light, the reversible change in contact angle is shown to result from the isomerization of the spiropyran moiety in SP-MC.

A femtoliter nanochannel open/close valve utilizing tiny glass deformation, which will enable highly-integrated glass nanofluidic devices, was proposed and demonstrated.

Abstract— A thin‐crystalline‐film (TCF) polarizer has been developed which can be used internally in liquid‐crystal‐display cells. Based on this material, a manufacturing process has been developed for the fabrication of monochrome LCDs with internal polarizers. A new TCF polarizer material and coating equipment, developed to realize a high‐performance color TFT‐LCD, are discussed.

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The extraction behavior of lanthanoids(III) with 1-(2-thienyl)-4,4,4-trifluoro-1,3-butanedione (TTA) and benzoic or phenylacetic acid from 0.1 M sodium perchlorate media into chloroform has been examined at 298 K. The extraction curves are interpreted by the extraction of the adducts of the TTA chelates accompanied with two molecules of the carboxylic acids at maximum as well as the extraction of the TTA chelate. The adduct formation constants decrease generally with the atomic number, but in the middle of the series, they change only slightly, then decrease more rapidly for the heavy elements. Such a trend indicates a change of the coordination number in the middle of the series.