Mechanochromic luminescent material, mechanochromic resin obtained by crosslinking mechanochromic luminescent material, method for producing mechanochromic luminescent material, and method for producing mechanochromic
申请人:JAPAN SCIENCE AND TECHNOLOGY AGENCY
公开号:US10442886B2
公开(公告)日:2019-10-15
Provided is a mechanochromic resin by which a stress applied to a material can be visualized in real time, and a mechanochromic luminescent material that is used in the synthesis of the mechanochromic resin. Stress can be visualized in real time by means of a mechanochromic luminescent material represented by formula (1) or formula (2) and a mechanochromic resin obtained by crosslinking the mechanochromic luminescent material. [Chemical formula 1] (In the formula, Y1 and Y2 each denote a substituent group that inhibits aggregation of the mechanochromic luminescent material represented by formula (1), and Y1 and Y2 may be same as or different from each other. Z1 and Z2 each denote a polymerizable group, and may be same as or different from each other.) [Chemical formula 2] (In the formula, Y1 and Y2 each denote a substituent group that inhibits aggregation of the mechanochromic luminescent material represented by formula (2), and Y1 and Y2 may be same as or different from each other. Z1 and Z2 each denote a polymerizable group, and may be same as or different from each other).
MECHANOCHROMIC LUMINESCENT MATERIAL, MECHANOCHROMIC RESIN OBTAINED BY CROSSLINKING MECHANOCHROMIC LUMINESCENT MATERIAL, METHOD FOR PRODUCING MECHANOCHROMIC LUMINESCENT MATERIAL, AND METHOD FOR PRODUCING MECHANOCHROMIC
申请人:JAPAN SCIENCE AND TECHNOLOGY AGENCY
公开号:US20190031820A1
公开(公告)日:2019-01-31
Provided is a mechanochromic resin by which a stress applied to a material can be visualized in real time, and a mechanochromic luminescent material that is used in the synthesis of the mechanochromic resin. Stress can be visualized in real time by means of a mechanochromic luminescent material represented by formula (1) or formula (2) and a mechanochromic resin obtained by crosslinking the mechanochromic luminescent material. [Chemical formula 1] (In the formula, Y
1
and Y
2
each denote a substituent group that inhibits aggregation of the mechanochromic luminescent material represented by formula (1), and Y
1
and Y
2
may be same as or different from each other. Z
1
and Z
2
each denote a polymerizable group, and may be same as or different from each other.) [Chemical formula 2] (In the formula, Y
1
and Y
2
each denote a substituent group that inhibits aggregation of the mechanochromic luminescent material represented by formula (2), and Y
1
and Y
2
may be same as or different from each other. Z
1
and Z
2
each denote a polymerizable group, and may be same as or different from each other.)
Starting from aromaticortho-dialdehydes, we devised a homo-elongation protocol that combines a Wittig olefination and subsequent intramolecular Knoevenagel condensation to produce acene diesters and dinitriles.