Facile Synthesis of Monodisperse CdS Nanocrystals via Microreaction

Nanoscale Research Letters - Tập 5 - Trang 130-137 - 2009
Zhen Wan1, Hongwei Yang1, Weiling Luan1, Shan-tung Tu1, Xinggui Zhou2
1State Key Laboratory of Safety Science of Pressurized System, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China
2State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, China

Tóm tắt

CdS-based nanocrystals (NCs) have attracted extensive interest due to their potential application as key luminescent materials for blue and white LEDs. In this research, the continuous synthesis of monodisperse CdS NCs was demonstrated utilizing a capillary microreactor. The enhanced heat and mass transfer in the microreactor was useful to reduce the reaction temperature and residence time to synthesize monodisperse CdS NCs. The superior stability of the microreactor and its continuous operation allowed the investigation of synthesis parameters with high efficiency. Reaction temperature was found to be a key parameter for balancing the reactivity of CdS precursors, while residence time was shown to be an important factor that governs the size and size distribution of the CdS NCs. Furthermore, variation of OA concentration was demonstrated to be a facile tuning mechanism for controlling the size of the CdS NCs. The variation of the volume percentage of OA from 10.5 to 51.2% and the variation of the residence time from 17 to 136 s facilitated the synthesis of monodisperse CdS NCs in the size range of 3.0–5.4 nm, and the NCs produced photoluminescent emissions in the range of 391–463 nm.

Tài liệu tham khảo

Bruchez M Jr., Moronne M, Gin P, et al.: Science. 1998, 281: 2013. COI number [1:CAS:528:DyaK1cXmtlKgurw%3D]; Bibcode number [1998Sci...281.2013B] 10.1126/science.281.5385.2013 Michalet X, Pinaud FF, Bentolila LA, et al.: Science. 2005, 307: 538. COI number [1:CAS:528:DC%2BD2MXmslOhtw%3D%3D]; Bibcode number [2005Sci...307..538M] 10.1126/science.1104274 Yin YD, Alivisatos AP: Nature. 2005, 437: 664. COI number [1:CAS:528:DC%2BD2MXhtVCjsLzP]; Bibcode number [2005Natur.437..664Y] 10.1038/nature04165 Coe S, Woo WK, Bawendi MG, et al.: Nature. 2002, 420: 800. COI number [1:CAS:528:DC%2BD38XpsFygt7s%3D]; Bibcode number [2002Natur.420..800C] 10.1038/nature01217 Thurn KT, Brown EMB, Wu A: Nanoscale Res. Lett.. 2007, 2: 430. COI number [1:CAS:528:DC%2BD2sXhtl2rtrnN]; Bibcode number [2007NRL.....2..430T] 10.1007/s11671-007-9081-5 Stephen E, Bawendi MG: Acc. Chem. Res.. 1999, 32: 389. 10.1021/ar9501939 Sapra S, Rogach L, Feldmann J: J. Mater. Chem.. 2006, 33: 3391. 10.1039/b607022a Li LS, Pradhan N, Wang YJ, et al.: Nano Lett.. 2004, 4: 2261. COI number [1:CAS:528:DC%2BD2cXotlKks78%3D]; Bibcode number [2004NanoL...4.2261L] 10.1021/nl048650e Luan WL, Yang HW, Tu ST, et al.: Nanotechnology. 2007, 18: 175603. Bibcode number [2007Nanot..18q5603L] 10.1088/0957-4484/18/17/175603 Qu LH, Peng XG: J. Am. Chem. Soc.. 2002, 124: 2049. COI number [1:CAS:528:DC%2BD38XhtVWlu7g%3D] 10.1021/ja017002j Protière M, Reiss P: Nanoscale Res. Lett.. 2006, 1: 62. Bibcode number [2006NRL.....1...62P] 10.1007/s11671-006-9001-0 Peng ZA, Peng XG: J. Am. Chem. Soc.. 2001, 123: 183. COI number [1:CAS:528:DC%2BD3cXos1Ckt7s%3D] 10.1021/ja003633m Cao YC, Wang JH: J. Am. Chem. Soc.. 2004, 126: 14336. COI number [1:CAS:528:DC%2BD2cXos1Wjs7s%3D] 10.1021/ja0459678 Steckel JS, Zimmer JP, Sullivan SC, et al.: Angew. Chem. Int. Ed.. 2004, 43: 2154. COI number [1:CAS:528:DC%2BD2cXjsFSnsLo%3D] 10.1002/anie.200453728 Murray CB, Norris DJ, Bawendi MG: J. Am. Chem. Soc.. 1993, 115: 8706. COI number [1:CAS:528:DyaK3sXlsV2ltL8%3D] 10.1021/ja00072a025 Joo J, Na HB, Yu T, et al.: J. Am. Chem. Soc.. 2003, 125: 11100. COI number [1:CAS:528:DC%2BD3sXmt1ejuro%3D] 10.1021/ja0357902 Yu WW, Peng XG: Angew. Chem. Int. Ed.. 2002, 41: 2368. COI number [1:CAS:528:DC%2BD38XlsVyqtrs%3D] COI number 10.1002/1521-3773(20020703)41:13<2368::AID-ANIE2368>3.0.CO;2-G Boutonnet M, Kizling J, Stenius P, et al.: Colloids Surf.. 1982, 5: 209. COI number [1:CAS:528:DyaL38Xmt1eltbg%3D] 10.1016/0166-6622(82)80079-6 Edel JB, Fortt R, deMello JC, et al.: Chem. Commun.. 2002, 10: 1136. 10.1039/b202998g Yang HW, Luan WL, Tu ST, et al.: Lab Chip. 2008, 8: 451. COI number [1:CAS:528:DC%2BD1cXisFSrsrY%3D] 10.1039/b715540a Luan WL, Yang HW, Fan NN, et al.: Nanoscale Res. Lett.. 2008, 3: 134. Bibcode number [2008NRL.....3..134L] 10.1007/s11671-008-9125-5 Nakamura H, Yamaguchi Y, Miyazaki M, et al.: Chem. Commun.. 2002, 23: 2844. 10.1039/b208992k Wang HZ, Li XY, Uehara M, et al.: Chem. Commun.. 2004, 1: 48. 10.1039/b310644f Zhu XX, Zhang QH, Li YG, et al.: J. Mater. Chem.. 2008, 18: 5060. COI number [1:CAS:528:DC%2BD1cXht1Krt7nI] 10.1039/b812473f Chan EM, Mathies RA, Alivisatos AP: Nano Lett.. 2003, 3: 199. COI number [1:CAS:528:DC%2BD3sXjsFKruw%3D%3D]; Bibcode number [2003NanoL...3..199C] 10.1021/nl0259481 Chan EM, Alivisatos AP, Mathies RA: J. Am. Chem. Soc.. 2005, 127: 13854. COI number [1:CAS:528:DC%2BD2MXhtVWnurbN] 10.1021/ja051381p Shestopalov I, Tice JD, Ismagilov RF: Lab Chip. 2004, 4: 316. COI number [1:CAS:528:DC%2BD2cXlvVKmsL8%3D] 10.1039/b403378g Peng XG, Wickham J, Alivisatos AP: J. Am. Chem. Soc.. 1998, 120: 5343. COI number [1:CAS:528:DyaK1cXivFCit7g%3D] 10.1021/ja9805425 Yu WW, Qu LH, Guo WZ, et al.: Chem. Mater.. 2003, 15: 2854. COI number [1:CAS:528:DC%2BD3sXks12msrw%3D] 10.1021/cm034081k
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Nanoscale Research Letters

Tập 5

130-137

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