Nihon University

Fujifilm Wako Pure Chemical Corporation

Ryuzi Katoh

Shigeaki Imazeki

Katsufumi Suzuki

Tetsuji Murase

Masami Enoki

Kazuki Nemoto

A reverse photochromic compound of the related art has difficulty in sensing light with a wavelength of 600 nm or greater in a visible light region which has been used for medical applications. Therefore, an object of the present invention is to provide a reverse photochromic compound and a polymer which have a high sensitivity to light having a wavelength of 600 nm or greater. The present invention relates to a compound and the like represented by the following general formula (1).  In the formula, Rand Reach independently represent a hydrogen atom or the like, R, R, and Reach independently represent an alkyl group or the like, Rrepresents a group having a polymerizable unsaturated group, a carboxy group, or an alkoxycarbonyl group, Rand Reach independently represent an alkoxy group or the like, Rand Reach independently represent a hydrogen atom or the like, Yrepresents an oxygen atom or a sulfur atom, Anrepresents an anion, nto nrepresent a specific integer, and Rand R, Rand R, and/or Rand Rmay form an alkylene group.

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Tokyo, Japan

Ryuzi Katoh