硫脲修饰ZnSe:Cu量子点的水相合成及荧光特性

doi:10.3866/PKU.WHXB201212272

Abstract

Abstract:

Aqueous phase Cu doped ZnSe (ZnSe:Cu) quantum dots (QDs) stabilized with mercaptopropionic acid were prepared, and thiourea was used as a surface modifier to obtain core-shell ZnSe:Cu/ZnS QDs. QDs had a sphalerite structure, were uniformly dispersed, had an average particle size of approximately 5 nm and an emission peak at around 460 nm. After thiourea modification, a wide band-gap ZnS shell was coated on the QDs to passivate the surface, reduce surface states, and significantly improve fluorescence intensity. Thiourea modified ZnSe:Cu/ZnS QDs exhibit better surface passivation, fluorescence efficiency, and stability than those of other surface modifiers like Na₂S and thioacetamide. Quantum yields were further improved after UV irradiation eliminated surface dangling bonds.

Key words: Quantum dot, ZnSe:Cu/ZnS, Aqueous phase synthesis, Thiourea modified, Low toxicity, UV irradiation

TANG Zi-Long, LI Dong-Mei, CHENG Jing-Wei, JIANG Jie-Ru. Preparation and Fluorescence Properties of Aqueous Soluble Thiourea Modified ZnSe:Cu Quantum Dots[J]. Acta Phys. -Chim. Sin. 2013, 29(03), 653-659. doi: 10.3866/PKU.WHXB201212272

References

(1) Cooper, J. K.; Franco, A. M.; Gul, S.; Corrado, C.; Zhang, J. Z.Langmuir 2011, 27 (13), 8486. doi: 10.1021/la201273x
(2) Derfus, A. M.; Chan, C.W.; Bhatia, S. N. Nano Lett. 2004, 4 (1), 11218.
(3) Cho, S. J.; Maysinger, D.; Manasi, J. M.; Roder, B.; Hackbarth,S.;Winnik, F. M. Langmuir 2007, 23 (4), 1974. doi: 10.1021/la060093j
(4) Chen, L. L.; Jiang, Y.;Wang, C.; Liu, X. M.; Chen, Y.; Jie, J. S.J. Exp. Nanosci. 2010, 5 (2), 106. doi: 10.1080/17458080903314022
(5) Pol, S. V.; Pol, V. G.; Calderon-Moreno, J. M.; Cheylan, S.;Gedanken, A. Langmuir 2008, 24 (18), 104622.
(6) Qin, H. Y.; Jian,W. P.; Zhang, Y. N.; Kim, T.; Jiang, Z. H.;Jiang, D.; Sun, D. H. Mater. Lett. 2012, 67 (1), 28. doi: 10.1016/j.matlet.2011.09.033
(7) Cai, Z. X.; Shi, B. Q.; Zhao, L.; Ma, M. H. Spectrochim. ActaPart A: Mol. Biomol. Spectrosc. 2012, 97, 909.
(8) Huang, L.; Han, H. Y. Mater. Lett. 2010, 64 (9), 1099. doi: 10.1016/j.matlet.2010.02.026
(9) Bhargava, R. N.; Gallagher, D. Phys. Rev. Lett. 1994, 72 (3),416. doi: 10.1103/PhysRevLett.72.416
(10) Zhu, D.; Chen, Y.; Jiang, L. P.; Geng, J.; Zhang, J. R.; Zhu, J. J.Analytical Chemistry 2011, 83 (23), 9076. doi: 10.1021/ac202101u
(11) Aboulaich, A.; Balan, L.; Ghanbaja, J.; Medjahdi, G.; Merlin,C.; Schneider, R. Chem. Mater. 2011, 23 (16), 3706. doi: 10.1021/cm2012928
(12) Pradhan, N.; Goorskey, D.; Thessing, J.; Peng, X. J. Am. Chem.Soc. 2005, 127, 17586. doi: 10.1021/ja055557z
(13) Viswanatha, R.; Brovelli, S.; Pandey, A.; Crooker, S. A.;Klimov, V. Nano Lett. 2011, 11 (11), 4753. doi: 10.1021/nl202572c
(14) Xi, B. J.; Xu, D. C.; Xiong, S. L.;Wang, C. M.; Feng, X. M.;Zhou, H. Y.; Qian, Y. T. J. Phys. Chem. C 2008, 112 (14), 5333.
(15) Han, J.; Zhang, H.; Tang, Y.; Liu, Y.; Yao, X.; Yang, B. J. Phys.Chem. C 2009, 113, 7503.
(16) Gao, X.;Wang, C.; Niu, L.; Su, X. G. J. Luminescence 2011,131 (7), 1300.
(17) Jiang, L.W.; Zhou, J.; Yang, X. Z.; Peng, X. N.; Jiang, H.;Zhuo, D. Q.; Chen, L. D.; Yu, X. F. Chem. Phys. Lett. 2011, 510 (3), 135. doi: 10.1016/j.cplett.2011.05.040
(18) Liu, Y. F.; Yu, J. S. J. Colloid Interface Sci. 2010, 351 (1), 1.doi: 10.1016/j.jcis.2010.07.047
(19) Rawalekar, S.; Kaniyankandy, S.; Verma, S.; Ghosh, H. N.J. Phys. Chem. C 2010, 114 (3), 1460. doi: 10.1021/jp909118c
(20) Park, C.; Yoon, T. H. Colloid Surf. B- Biointerfaces 2010, 75 (2), 472. doi: 10.1016/j.colsurfb.2009.09.021
(21) Wang, C. L.; Xu, S. H.;Wang, Z. Y.; Cui, Y. P. J. Phys. Chem. C2011, 115 (38), 18486. doi: 10.1021/jp206137f
(22) Lin, Z. H.;Wang, M. Q.;Wei, L. Z.; Song, X. H.; Xue, Y. H.;Yao, X. J. Alloy. Compd. 2011, 509 (33), 8356. doi: 10.1016/j.jallcom.2011.03.070
(23) Chen, H. S.; Lo, B.; Hwang, J. Y.; Chang, G. Y.; Chen, C. M.;Tasi, S. J.;Wang, S. J. J. Phys. Chem. B 2004, 108 (44), 17119.
(24) Chen, X. X.; Liu, F. T.; Jiang, Q. H.; Sun, L.;Wang, Q. J. Inorg.Organomet. Polym. Mater. 2012, 22 (1), 6. doi: 10.1007/s10904-011-9606-3
(25) Xu, S. H.;Wang, C. L.;Wang, Z. Y.; Zhang, H. S.; Yang, J.; Xu,Q. Y.; Shao, H. B.; Li, R. Q.; Lei,W.; Cui, Y. P. Nanotechnology2011, 22 (27), 275605.
(26) Deng, Z. T.; Lie, F. L.; Shen, S. Y.; Ghosh, I.; Mansuripur, M.;Muscat, A. J. Langmuir 2009, 25 (1), 434. doi: 10.1021/la802294e
(27) Qian, H. F.; Qiu, X.; Li, L.; Ren, J. C. J. Phys. Chem. B 2006,110 (18), 9034. doi: 10.1021/jp0539324

[1]	Zhongqi Zan, Xibao Li, Xiaoming Gao, Juntong Huang, Yidan Luo, Lu Han. 0D/2D Carbon Nitride Quantum Dots (CNQDs)/BiOBr S-Scheme Heterojunction for Robust Photocatalytic Degradation and H₂O₂ Production [J]. Acta Phys. -Chim. Sin., 2023, 39(6): 2209016-.
[2]	Mingxu Zhang, Qisen Zhou, Xinyi Mei, Jingxuan Chen, Junming Qiu, Xiuzhi Li, Shuang Li, Mubing Yu, Chaochao Qin, Xiaoliang Zhang. Colloidal Quantum Dot Solids with a Diminished Epitaxial PbI₂ Matrix for Efficient Infrared Solar Cells [J]. Acta Phys. -Chim. Sin., 2023, 39(3): 2210002-0.
[3]	Cheng Wang, Chi Zhang, Ruifeng Li, Qi Chen, Lei Qian, Liwei Chen. Charge Accumulation Behavior in Quantum Dot Light-Emitting Diodes [J]. Acta Phys. -Chim. Sin., 2022, 38(8): 2104030-.
[4]	Jian Yang, Chen Lei, Xiang Liu, Jian Zhang, Yudie Sun, Cheng Zhang, Mingfu Ye, Kui Zhang. Versatile Performance of a Cationic Surfactant Derived from Carbon Quantum Dots [J]. Acta Phys. -Chim. Sin., 2022, 38(12): 2111030-.
[5]	Jin Wu, Jing Liu, Wu Xia, Ying-Yi Ren, Feng Wang. Advances on Photocatalytic CO₂ Reduction Based on CdS and CdSe Nano-Semiconductors [J]. Acta Phys. -Chim. Sin., 2021, 37(5): 2008043-.
[6]	Chao Zheng, Aqiang Liu, Chenghao Bi, Jianjun Tian. SCN-doped CsPbI₃ for Improving Stability and Photodetection Performance of Colloidal Quantum Dots [J]. Acta Phys. -Chim. Sin., 2021, 37(4): 2007084-.
[7]	Jing Huang, Danyang Wang, Shuhua Li, Hong Fan, Louzhen Fan. Red Fluorescent Carbon Quantum Dots for Diagnosis of Acidic Microenvironment in Tumors [J]. Acta Phys. -Chim. Sin., 2021, 37(10): 1905067-.
[8]	Jiayao Zhu, Yue Dong, Su Zhang, Zhuangjun Fan. Application of Carbon-/Graphene Quantum Dots for Supercapacitors [J]. Acta Physico-Chimica Sinica, 2020, 36(2): 1903052-.
[9]	Hao WU,Zhong YAN. Antimonene Quantum Dots: Large-scale Synthesis via Liquid-phase Exfoliation [J]. Acta Physico-Chimica Sinica, 2019, 35(10): 1052-1057.
[10]	Shaohai LI,Bo WENG,Kangqiang LU,Yijun XU. Improving the Efficiency of Carbon Quantum Dots as a Visible Light Photosensitizer by Polyamine Interfacial Modification [J]. Acta Phys. -Chim. Sin., 2018, 34(6): 708-718.
[11]	Ping HE,Fanglong YUAN,Zifei WANG,Zhanao TAN,Louzhen FAN. Growing Carbon Quantum Dots for Optoelectronic Devices [J]. Acta Phys. -Chim. Sin., 2018, 34(11): 1250-1263.
[12]	Rui XIA,Shi-Mao WANG,Wei-Wei DONG,Xiao-Dong FANG. Research Progress of Counter Electrodes for Quantum Dot-Sensitized Solar Cells [J]. Acta Phys. -Chim. Sin., 2017, 33(4): 670-690.
[13]	Han WANG,Xiao-Min WANG. Effect of Preparation Conditions on the Optical Properties of PEI-Functionalized Graphene Quantum Dots [J]. Acta Phys. -Chim. Sin., 2016, 32(5): 1267-1272.
[14]	Li-Juan WANG,Qi LI,Yan-Zhong HAO,Shi-Gang SHEN,Dong-Sheng XU. Improvement of Quantum Dot Coverage of CdS/CdSe/TiO₂ Hierarchical Hollow Sphere Photoanodes [J]. Acta Phys. -Chim. Sin., 2016, 32(4): 983-989.
[15]	Yun-Jing WANG,Ying-Qiu LIU,Xiu-Xiu GAO,Yan-Shan ZHAN,Li-Yang PAN,Wen-Kai ZHANG,Xiao-Min FANG. Surface Defect Passivation of Graphene Quantum Dots by Amino Functionalization and Photoluminescence Emission Enhancement [J]. Acta Phys. -Chim. Sin., 2016, 32(10): 2636-2644.

Preparation and Fluorescence Properties of Aqueous Soluble Thiourea Modified ZnSe:Cu Quantum Dots

PDF

Like

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Recommended 0