[11p-N302-1~13] 17.3 層状物質

▲ [11p-N302-9] UV/Thermally Induced Isomerization of Spiropyran on MoS₂ Lattice

〇(D)MuhammadShamimAl Mamun¹、Yasuyuki Sainoo²、Tsuyoshi Takaoka²、Hiroki Waizumi¹、Zhipeng Wang¹、Md Iftekharul Alam¹、Kosei Takahashi¹、Atsushi Ando³、Ryuichi Arafune⁴、Tadahiro Komeda² (1.Tohoku University、2.IMRAM, Tagen、3.AIST、4.NIMS)

キーワード：Spiropyran, Isomerization, Activation barrier

Nanotechnology is being considered as a mainstream technology of the 21^st century due to its aspects of observing and modifying matter at the nano level.¹ Molecules with very specific functional groups can be modulated by outside stimuli are of great interest for sensing and optoelectronics.² In this report, we observe the photo/thermal induced structural switching of spiropyran (1′,3′-Dihydro-1′,3′,3′-trimethyl-6-nitrospiro[2H-1-benzopyran-2,2′-(2H)-indole]) molecule through electrical property measurement by MoS₂-FET. Well controlled functionalization of MoS₂ by spiropyran (SP) can be possible by the external photon irradiation. The conformational change of the spiropyran between spiropyran and merocyanine (MC) was monitored. TOF-SIMS measurement confirms the presence of spiropyran over the MoS₂ after functionalization. Raman spectroscopy confirms the n-doping of both SP and MC.