TY - JOUR
T1 - Normal photochromism of spiropyran in montmorillonite interlayer
AU - Saso, Naoki
AU - Yamamoto, Takashi
AU - Umemura, Yasushi
AU - Einaga, Yasuaki
N1 - Funding Information:
This work was supported by a Grant-in-Aid for Scientific Research on Priority Area (417) and the 21st Century COE program “KEIO Life Conjugate Chemistry” from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of the Japanese Government. TY is grateful to JSPS Research Fellowships for Young Scientists.
PY - 2008/3/20
Y1 - 2008/3/20
N2 - Spiropyran-montmorillonite hybrid materials have been fabricated by the Langmuir-Blodgett (LB) and an intercalation method. The LB method using clay minerals could be applied to fabricate hybrid ultrathin films consisting of a non-amphiphilic spiropyran. It is confirmed that hybrid LB films possess the layered structure and exhibit "normal photochromism" without any changes in the layered structure. In case of the intercalation method, hybrid compounds also possess the layered structure. Interestingly, intercalation hybrid compounds exhibit "reverse photochromism". It is suggested that a different process in formation of the layered structure influences the observed photochromism.
AB - Spiropyran-montmorillonite hybrid materials have been fabricated by the Langmuir-Blodgett (LB) and an intercalation method. The LB method using clay minerals could be applied to fabricate hybrid ultrathin films consisting of a non-amphiphilic spiropyran. It is confirmed that hybrid LB films possess the layered structure and exhibit "normal photochromism" without any changes in the layered structure. In case of the intercalation method, hybrid compounds also possess the layered structure. Interestingly, intercalation hybrid compounds exhibit "reverse photochromism". It is suggested that a different process in formation of the layered structure influences the observed photochromism.
KW - Clay mineral
KW - Intercalation method
KW - Langmuir-Blodgett method
KW - Photochromism
KW - Spiropyran
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U2 - 10.1016/j.colsurfa.2007.10.036
DO - 10.1016/j.colsurfa.2007.10.036
M3 - Article
AN - SCOPUS:39149095280
SN - 0927-7757
VL - 317
SP - 309
EP - 315
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
IS - 1-3
ER -