A new 4-acetalphenyl-substituted C
60
-pyrrolidine derivative, C
60
(C
12
H
17
NO
2
) (1), has been prepared and its Langmuir films, with and without 22-tricosenoic acid [CH
2
CHâ(CH
2
)
20
CO
2
H (TA)], at the air/water interface have been investigated. Pure 1 forms monolayers more easily than the parent molecule, C
60
, and can be transferred onto solid substrates to form LangmuirâBlodgett (LB) films. The mixed Langmuir films of 1 and TA were transferred onto hydrophilically pretreated quartz, glass substrates and silicon wafers. Reflectometric measurement of a 63-layer 1:2 mixed film on a silicon wafer using an HeâNe laser (λ = 632.8 nm) provided a film thickness and refractive index of 171 nm and 1.73, respectively. Weak second harmonic generation (SHG) from LB monolayers of pure 1 and 1:2 and 1:4 mixed LB monolayer films of 1 and TA was observed. The second-order susceptibilities, Ï
pp
(2)
, were evaluated to be in the range (4â6)Ã10
â9
esu.
我们制备了一种新的 4-
乙醛基苯基取代的 C 60 -
吡咯烷衍
生物 C 60 (C 12 H 17 NO 2 ) (1),并研究了它在空气/
水界面上与 22-
三烯酸 [CH 2 CHâ(CH 2 ) 20 CO 2 H (TA)] 或不与 22-
三烯酸 [CH 2 CHâ(CH 2 ) 20 CO 2 H (TA)] 结合形成的朗缪尔薄膜。纯 1 比母体分子 C 60 更容易形成单层,并能转移到固体基底上形成朗缪尔-布洛杰特(LB)薄膜。1 和 TA 的混合朗缪尔薄膜被转移到经过亲
水预处理的石英、
玻璃基底和
硅晶片上。使用 HeâNe 激光(Î" = 632.8 nm)对
硅晶片上 63 层 1:2 混合薄膜进行反射测量,得出薄膜厚度和折射率分别为 171 nm 和 1.73。从纯 1 和 1:2 及 1:4 混合 1 和 TA 的枸杞单层膜中观察到了微弱的二次谐波发生(S
HG)。经评估,二阶电感Ï pp (2) 的范围为 (4â6)Ã10 â9 esu。