流动控制沉积法制备PMMA叠层光子晶体薄膜及其光学性能研究

doi:10.7503/cjcu20190482

摘要/Abstract

摘要：

采用流动控制沉积法, 通过调控泵速和聚甲基丙烯酸甲酯(PMMA)胶体微球溶液的浓度, 制备出微球排列高度有序且薄膜紧密附着于基底的高质量光子晶体薄膜. 获得了制备高质量PMMA光子晶体薄膜的组装条件范围, 发现在该条件范围内, 当泵速或胶体微球溶液浓度一定时, PMMA光子晶体薄膜的厚度随胶体微球溶液浓度的增加或泵速的降低而增加. 研究了组装条件对PMMA光子晶体薄膜光学性能的影响, 发现光子禁带位置随光子晶体薄膜厚度增加或减少而红移或蓝移. 在此基础上, 控制组装条件得到了不同尺寸微球堆叠而成的叠层光子晶体薄膜, 并研究了其光学性能的变化规律. 结果显示, 叠层光子晶体薄膜的光子禁带峰为各层叠层光子晶体禁带峰的简单叠加, 且峰强度受光入射角方向影响.

关键词: 流动控制沉积法, 泵速, 胶体微球溶液, 叠层光子晶体薄膜

Abstract:

Finely organized mono-layer polymethyl methacrylate(PMMA)photonic crystal films were assembled by a flow-controlled deposition method through adjusting the concentration of PMMA colloidal microspheres and the velocity of pump. An optimized assembling condition scope was obtained for the preparation of high qulity PMMA photonic crystals. It was found that the thickness of photonic crystal film increases with the increasing of the concentration of colloidal microspheres or decreasing of the velocity of pump. The optical property of PMMA photonic crystal films was investigated and it was found that the photonic band gap red-shifted/blue-shifted with the increasing/decreasing of the thickness of photonic crystal films. On the basis, tandem photonic crystal films were assembled by using PMMA microspheres with different sizes. The optical properties of tandem photonic crystal films show simple superposition of the elemental photonic crystal layers without any synergistic effect. These would pave the way for further exploring the UV-Vis-Infrared light harvesting rainbow tandem photonic crystal films and thereof the development of solar light driven photocatalysts.

Key words: Flow-controlled deposition method, Velocity of pump, Colloidal microsphere solution, Tandem photonic crystal film

中图分类号:

O644

TrendMD:

李杰峰,赵江红,赵永祥. 流动控制沉积法制备PMMA叠层光子晶体薄膜及其光学性能研究. 高等学校化学学报, 2020, 41(2): 293.

LI Jiefeng,ZHAO Jianhong,ZHAO Yongxiang. Fabrication of Tandem PMMA Photonic Crystal Films by Flow-controled Deposition Method and Study of Their Optical Properties ^†. Chem. J. Chinese Universities, 2020, 41(2): 293.

图/表 7

Fig.1 Schematic of colloidal crystals arranged by vertical self-assembly Vc: the growth rate of the product; Vw: the withdrawal rate of the substrate plate.

Table 1 Polymethyl methacrylate(PMMA) colloidal microspheres with different sizes

Sample	V(H₂O)/mL	V(MMA)/mL	$m Initiator *$ /g	Temperature/℃	Size/nm	Standard deviation
PMMA-1	240	45	0.225	80	318	0.0084
PMMA-2	240	45	0.225	70	401	0.0073
PMMA-3	240	60	0.225	70	454	0.0104

Table 1 Polymethyl methacrylate(PMMA) colloidal microspheres with different sizes

Sample	V(H₂O)/mL	V(MMA)/mL	$m Initiator *$ /g	Temperature/℃	Size/nm	Standard deviation
PMMA-1	240	45	0.225	80	318	0.0084
PMMA-2	240	45	0.225	70	401	0.0073
PMMA-3	240	60	0.225	70	454	0.0104

Fig.2 SEM images showing top view, side view(inset)(A—E) and digital photographs(F, G) of PMMA photonic crystals assembled by PMMA microspheres with a diameter of 401 nm(PMMA-2) Concentration of PMMA colloidal suspension(wPMMA) and velocity of pump(Vp)/(mL·min-1): (A) 0.6%, 0.23; (B) 0.6%, 0.34; (C) 0.6%, 0.45; (D) 0.8%, 0.45; (E) 1.0%, 0.45. Digital photographs from left to right correspond to samples shown in (A)—(E): (F) vertically; (G) at 45° reflection angle under natural light.

Fig.3 SEM images showing top view, side view(insets, up) and digital photographs(insets, down) of PMMA-2 photonic crystal thin films, optimized wPMMA-Vp conditions for assembling stable high-quality PMMA photonic crystal thin films(C) and relationship between assembly conditions and PMMA photonic crystal thinkness(D) Assembly conditions: (A) Vp=0.23 mL/min, wPMMA=0.4%; (B) Vp=0.67 mL/min, wPMMA=1.2%.

Fig.4 SEM images of top view of PMMA-1(A) and PMMA-3(B) photonic crystal thin films wPMMA=0.6% and Vp=0.34 mL/min. Insets: digital photographs.

Fig.5 UV-Vis transmittance spectra of PMMA-2(A—C) and PMMA-1(a), PMMA-2(b) and PMMA-3(c)(D) photonic crystal in air showing photonic bandgaps along the [111] direction wPMMA(%) and Vp/(mL·min-1): (A) a. 0.6%, 0.23; b. 0.6%, 0.34; c. 0.6%, 0.45. (B) a. 0.6, 0.45; b. 0.8%, 0.45; c. 1.0%, 0.45. (C) a. 0.4%, 0.23; b. 0.6%, 0.34; c. 0.8%, 0.45; d. 1.2%, 0.67. (D) 0.6%, 0.34.

Fig.6 SEM images(A, B, D, E) and UV-Vis transmittance spectra(C, F) of tandem PMMA-2/1(A—C) and PMMA-2/3(D—F) photonic crystal films (A, D) Top view; (B, E) cross-sectional view. (C) a. +PMMA-2/1; b. -PMMA-2/1; (F) a. +PMMA-2/3; b. -PMMA-2/3.

参考文献 21

[1]	Liu J., Zhao H., Wu M., Vander S. B., Li Y., Deparis O., Ye J. H., Hasan T., Su B. L., Adv. Mater., 2017,29(17), 1— 21
[2]	By T. Y., Honda M., Seki T., Adv. Mater., 2009,21(18), 1801— 1804
[3]	Waterhouseab G. I. N., Waterland M. R., Poly., 2007,26(2), 356— 368
[4]	Kim S. H., Lee S. Y., Yang S. M., Yi G. R., NPG Asia Mater., 2011,3(1), 25— 33
[5]	Mariano C., Schneider J., Bahnemann D. W., Mendive C. B., J. Phys. Chem. Lett., 2015,6(19), 3903— 3910
[6]	Torralvo F. M. J., Eduardo E., Sandra M., Isabel S., Jesus S., Dino T., Javier S., Sedat Y., Giovanni P., Vincenzo A., ACS Appl. Nano Mater., 2018,1(6), 2567— 2578
[7]	Ling H., Yeo L. P., Wang Z. W., Li X. L., Daniel M., Shlomo M., Alfred Y. T., J. Mater. Chem. C, 2018,6(31), 8488— 8494 doi: 10.1039/C8TC01954A URL
[8]	Jung W. L., Jun H. M., Nanoscale, 2015,7(12), 5164— 5168
[9]	Farid M., Alireza S., RSC Adv., 2015,5(17), 12536— 12545
[10]	An N., Ma Y. W., Liu J. M., Ma H. M., Yang J. C., Zhang Q. C., Chinese Journal of Catalysis, 2018,39(12), 1890— 1900
[11]	Song X. Y., Li W. Q., He D., Wu H. Y., Ke Z. J., Jiang C. Z., Wang G. M., Xiao X. M., Adv. Energy Mater., 2018,8(20), 1— 8
[12]	Zhao Y. J., Xie Z. Y., Gu H. C., Zhu C., Gu Z. Z., Chem. Soc. Rev., 2012,41(8), 3297— 3317
[13]	Yi S. S., Zhang X. B., Wulan B. R., Yan J. M., Jiang Q., Energy Environ. Sci., 2018,11(11), 3128— 3156
[14]	Trung D. N., Jankowsk E., Sharon C. G., ACS Na no., 2011,5(11), 8892— 8903
[15]	Geoffffrey W., Wanting C., Andrew C., Haishun J., Sun W. D., Bruce C., Chem. Mater., 2008,20(3), 1183— 1190 doi: 10.1021/cm703005g URL
[16]	Kim O. H., Yong H. C., Soon H. K., Hee Y. P., Minhyoung K., Ju W. L., Dong Y. C., Myeong J. L., Heeman C., Yung E. S., Nat.Commun., 2013,4(2473), 1— 9
[17]	Jia F., Sun W., Zhang J. H., Li Y. F., Yang B., J. Mater. Chem., 2012,22(6), 2435— 2441
[18]	Antony S. D., Kuniaki N., Langmuir, 1996,12(5), 1303— 1311
[19]	Zhou Z. C., Zha X. S., Langmuir, 2004,20(4), 1524— 1526 doi: 10.1021/la035686y URL
[20]	Rick C. S., Mohammed D., Christopher F. B., Andreas S., Chem. Mater., 2002,14(8), 3305— 3315 doi: 10.1021/cm020100z URL
[21]	Jiang P., Bertone J. F., Hwang K. S., Colvin V. L., Chem. Mater., 1999,11(8), 2132— 2140 doi: 10.1021/cm990080+ URL