Transformation of photoluminescence spectra at the bioconjugation of core-shell CdSe/ZnS quantum dots

被引：9

作者：

Vega Macotela, L. G. ^{[2
]}

Douda, J. ^{[2
]}

Torchynska, T. V. ^{[1
]}

Pena Sierra, R. ^{[3
]}

Shcherbyna, L. ^{[4
]}

机构：

[1] ESFM Inst Politecn Nacl, Mexico City 07738, DF, Mexico

[2] UPIITA Inst Politecn Nacl, Mexico City 07738, DF, Mexico

[3] CINVESTAV, IPN, Mexico City 07320, DF, Mexico

[4] NASU, V Lakshkarev Inst Semicond Phys, Kiev, Ukraine

来源：

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 7 NO 3-4 | 2010年 / 7卷 / 3-4期

关键词：

RAMAN-SCATTERING; CDS; NANOCRYSTALLITES; EXCITATION; CRYSTALS; SURFACE;

D O I：

10.1002/pssc.200982651

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The photoluminescence (PL) of nonconjugated and bioconjugated core-shell CdSe/ZnS quantum dots (QDs) has been discussed in this paper. Commercial CdSe/ZnS QDs with the size of 3.6-4.0 nm covered by polymer with emission at 560-565 nm (2.19-2.22 eV) have been used. The QD bioconjugation is performed with the mouse anti PSA (Prostate-Specific Antigen) antibody (mab). PL spectra of nonconjugated QDs are characterized by a superposition of PL bands related to exciton emission in the CdSe core (2.19-2.22 eV) and to hot electron-hole emission via surface states (2.37, 2.73 and 3.06 eV) at the CdSe/ZnS or ZnS/polymer interfaces. The PL spectrum of bioconjugated QDs has changed dramatically, with essential decreasing of the hot electron-hole recombination flow via interface states. This effect is explained on the base of recharging of QD interface states at the bioconjugation. It is shown that the CdSe/ZnS QDs with interface states are very promising for the study of bioconjugation effects to antibodies. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：724 / 727

页数：4

共 50 条

[1] Photoluminescence of bioconjugated core-shell CdSe/ZnS quantum dots
Torchynska, T. V.
Douda, J.
Calva, P. A.
Ostapenko, S. S.
Pena Sierra, R.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 2009, 27 (02): : 836 - 838
[2] Modification of optical properties at bioconjugation of core-shell CdSe/ZnS quantum dots
Torchynska, T. V.
Quintos Vazquez, A. L.
Sierra, R. Pena
Gazarian, K.
Shcherbyna, L.
QUANTUM DOTS 2010, 2010, 245
[3] Photoluminescence of core-shell CdSe/ZnS quantum dots of different sizes
Torchynska, T. V.
Douda, J.
Pena Sierra, R.
PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, SUPPL 1, 2009, 6 : S143 - S145
[4] Density dependence of photoluminescence lifetime of CdSe/ZnS core-shell colloidal quantum dots
Kawata, G.
Ogawa, Y.
Minami, F.
JOURNAL OF APPLIED PHYSICS, 2011, 110 (06)
[5] Photoluminescence of CdSe/ZnS core-shell quantum dots stabilized in water with a pseudopeptidic gemini surfactant
Rubio, Jenifer
Angeles Izquierdo, M.
Isabel Burguete, M.
Galindo, Francisco
Luis, Santiago V.
NANOSCALE, 2011, 3 (09) : 3613 - 3615
[6] Variation of Raman spectra of CdSe/ZnS quantum dots at the bioconjugation
Vega Macotela, L. G.
Torchynska, T. V.
Douda, J.
Pena Sierra, R.
PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 7 NO 3-4, 2010, 7 (3-4): : 1192 - 1195
[7] Effect of ZnS shell on optical properties of CdSe-ZnS core-shell quantum dots
Mathew, S.
Bhardwaj, Bishwajeet Singh
Saran, Amit D.
Radhakrishnan, P.
Nampoori, V. P. N.
Vallabhan, C. P. G.
Bellare, Jayesh R.
OPTICAL MATERIALS, 2015, 39 : 46 - 51
[8] Investigation of the radiative lifetime in core-shell CdSe/ZnS and CdSe/ZnSe quantum dots
Hemdana, Issam
Mahdouani, Mounira
Bourguiga, Ramzi
PHYSICA B-CONDENSED MATTER, 2012, 407 (17) : 3313 - 3319
[9] Interaction and bioconjugation of CdSe/ZnS core/shell quantum dots with maltose-binding protein
Kathiresan, R.
Gopalakrishnan, S.
Kolandaivel, P.
COMPUTATIONAL AND THEORETICAL CHEMISTRY, 2017, 1101 : 96 - 101
[10] Temperature dependence of the photoluminescence of MnS/ZnS core-shell quantum dots
Fang Dai-Feng
Ding Xing
Dai Ru-Cheng
Zhao Zhi
Wang Zhong-Ping
Zhang Zeng-Ming
CHINESE PHYSICS B, 2014, 23 (12)

← 1 2 3 4 5 →