AI Chat Paper
Note: Please note that the following content is generated by AMiner AI. SciOpen does not take any responsibility related to this content.
{{lang === 'zh_CN' ? '文章概述' : 'Summary'}}
{{lang === 'en_US' ? '中' : 'Eng'}}
Chat more with AI
Powered by AMiner. Clicking this button will take you away from SciOpen.
Home Nano Research Article
Article Link
Cite
EndNote(RIS) BibTeX
Collect
Submit Manuscript
Show Outline
Outline
Show full outline
Hide outline
Outline
Show full outline
Hide outline
Research Article

A robust and unique approach for tuning the energy level of Ag2Se quantum dots via “on-surface” manipulation of nitrogen-containing groups of surface-coordinated ligands

Meng-Yao Luo1,§, Bo Tang1,§, An-An Liu2,3, Jing-Ya Zhao1, Zhi-Ling Zhang1, Dai-Wen Pang1,2,3( )
The Institute for Advanced Studies and College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Frontiers Science Center for New Organic Matter, Research Center for Analytical Sciences, College of Chemistry, Frontiers Science Center for Cell Responses, Nankai University, Tianjin 300071, China
Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China

§ Meng-Yao Luo and Bo Tang contributed equally to this work.

Show Author Information

Graphical Abstract

The amino group of glutathione (GSH) binds to near-infrared (NIR) Ag2Se quantum dots (QDs) in a pH-dependent manner, whereas the binding of the thiol group is pH-independent. By “on-surface” manipulating binding states of amino groups, the bandgap and photoluminescence (PL) of QD-ligand complexes reversibly shift by up to 140 meV and 75 nm, respectively.

Abstract

Effects of surface chemistry on energy levels or optical properties of semiconductor nanocrystals have attracted considerable attention and show great promise in broad applications. Yet, it remains challenging to controllably tune the photoluminescence (PL) of quantum dots (QDs) by manipulating surface ligands. Herein, we investigated effects of the ligand, glutathione (GSH), on PL properties of near-infrared (NIR) Ag2Se QDs by “on-surface” manipulation, that is, precisely manipulating the chelating group without dissociating the ligand from the surface. The anchoring of the amino group was found to be controlled by solution pH, whereas the binding of the thiol group to the Ag+ was pH independent, maintaining the “on-surface” state of GSH. By tuning the pH-controlled binding of amino groups, the energy level or the bandgap of Ag2Se QDs could be increased by up to 140 meV. The increased bandgap resulted in the blueshift of PL spectrum, which could be reversibly tuned by up to 75 nm. The pH-mediated tunable PL properties of QDs could also be extended to other nitrogen-containing pH-sensitive groups which could coordinate to the Ag+, not limited to the amino group. Our work would facilitate the study of nanocrystal surface chemistry and our model that the binding of amino groups affected energy levels of Ag2Se QDs might facilitate new insights into the electronic structure and energy level of other QD-ligand complexes.

Keywords

quantum dot (QD)surface chemistryligandenergy levelpH

Electronic Supplementary Material

Download File(s)
12274_2023_5688_MOESM1_ESM.pdf (2.5 MB)

References

[1]

Dai, X. L.; Deng, Y. Z.; Peng, X. G.; Jin, Y. Z. Quantum-dot light-emitting diodes for large-area displays: Towards the dawn of commercialization. Adv. Mater. 2017, 29, 1607022.
Crossref Google Scholar
[2]

Pietryga, J. M.; Park, Y. S.; Lim, J.; Fidler, A. F.; Bae, W. K.; Brovelli, S.; Klimov, V. I. Spectroscopic and device aspects of nanocrystal quantum dots. Chem. Rev. 2016, 116, 10513–10622.
Crossref Google Scholar
[3]

Caputo, J. A.; Frenette, L. C.; Zhao, N.; Sowers, K. L.; Krauss, T. D.; Weix, D. J. General and efficient C–C bond forming photoredox catalysis with semiconductor quantum dots. J. Am. Chem. Soc. 2017, 139, 4250–4253.
Crossref Google Scholar
[4]

Ci, R. N.; Huang, C.; Zhao, L. M.; Qiao, J.; Chen, B.; Feng, K.; Tung, C. H.; Wu, L. Z. General and efficient C–P bond formation by quantum dots and visible light. CCS Chem. 2022, 4, 2946–2952.
Crossref Google Scholar
[5]

Liu, S. L.; Wang, Z. G.; Zhang, Z. L.; Pang, D. W. Tracking single viruses infecting their host cells using quantum dots. Chem. Soc. Rev. 2016, 45, 1211–1224.
Crossref Google Scholar
[6]

Zhou, J.; Yang, Y.; Zhang, C. Y. Toward biocompatible semiconductor quantum dots: From biosynthesis and bioconjugation to biomedical application. Chem. Rev. 2015, 115, 11669–11717.
Crossref Google Scholar
[7]

Hartley, C. L.; Kessler, M. L.; Dempsey, J. L. Molecular-level insight into semiconductor nanocrystal surfaces. J. Am. Chem. Soc. 2021, 143, 1251–1266.
Crossref Google Scholar
[8]

Kilina, S. V.; Tamukong, P. K.; Kilin, D. S. Surface chemistry of semiconducting quantum dots: Theoretical perspectives. Acc. Chem. Res. 2016, 49, 2127–2135.
Crossref Google Scholar
[9]

Harris, R. D.; Bettis Homan, S.; Kodaimati, M.; He, C.; Nepomnyashchii, A. B.; Swenson, N. K.; Lian, S. C.; Calzada, R.; Weiss, E. A. Electronic processes within quantum dot-molecule complexes. Chem. Rev. 2016, 116, 12865–12919.
Crossref Google Scholar
[10]

Li, G. M.; Fei, X. N.; Liu, H. F.; Gao, J.; Nie, J. Y.; Wang, Y. B.; Tian, Z. D.; He, C. C.; Wang, J. L.; Ji, C. et al. Fluorescence and optical activity of chiral CdTe quantum dots in their interaction with amino acids. ACS Nano 2020, 14, 4196–4205.
Crossref Google Scholar
[11]

Kroupa, D. M.; Vörös, M.; Brawand, N. P.; Bronstein, N.; McNichols, B. W.; Castaneda, C. V.; Nozik, A. J.; Sellinger, A.; Galli, G.; Beard, M. C. Optical absorbance enhancement in PbS QD/cinnamate ligand complexes. J. Phys. Chem. Lett. 2018, 9, 3425–3433.
Crossref Google Scholar
[12]

Ben-Moshe, A.; Teitelboim, A.; Oron, D.; Markovich, G. Probing the interaction of quantum dots with chiral capping molecules using circular dichroism spectroscopy. Nano Lett. 2016, 16, 7467–7473.
Crossref Google Scholar
[13]

Westmoreland, D. E.; López-Arteaga, R.; Weiss, E. A. N-heterocyclic carbenes as reversible exciton-delocalizing ligands for photoluminescent quantum dots. J. Am. Chem. Soc. 2020, 142, 2690–2696.
Crossref Google Scholar
[14]

Tang, J.; Kemp, K. W.; Hoogland, S.; Jeong, K. S.; Liu, H.; Levina, L.; Furukawa, M.; Wang, X. H.; Debnath, R.; Cha, D. et al. Colloidal-quantum-dot photovoltaics using atomic-ligand passivation. Nat. Mater. 2011, 10, 765–771.
Crossref Google Scholar
[15]

Chuang, C. H. M.; Brown, P. R.; Bulović, V.; Bawendi, M. G. Improved performance and stability in quantum dot solar cells through band alignment engineering. Nat. Mater. 2014, 13, 796–801.
Crossref Google Scholar
[16]

Kroupa, D. M.; Vörös, M.; Brawand, N. P.; McNichols, B. W.; Miller, E. M.; Gu, J.; Nozik, A. J.; Sellinger, A.; Galli, G.; Beard, M. C. Tuning colloidal quantum dot band edge positions through solution-phase surface chemistry modification. Nat. Commun. 2017, 8, 15257.
Crossref Google Scholar
[17]

Yu, M.; Doak, P.; Tamblyn, I.; Neaton, J. B. Theory of covalent adsorbate frontier orbital energies on functionalized light-absorbing semiconductor surfaces. J. Phys. Chem. Lett. 2013, 4, 1701–1706.
Crossref Google Scholar
[18]

Liu, M. X.; Voznyy, O.; Sabatini, R.; García De Arquer, F. P.; Munir, R.; Balawi, A. H.; Lan, X. Z.; Fan, F. J.; Walters, G.; Kirmani, A. R. et al. Hybrid organic–inorganic inks flatten the energy landscape in colloidal quantum dot solids. Nat. Mater. 2017, 16, 258–263.
Crossref Google Scholar
[19]

Kennehan, E. R.; Munson, K. T.; Grieco, C.; Doucette, G. S.; Marshall, A. R.; Beard, M. C.; Asbury, J. B. Influence of ligand structure on excited state surface chemistry of lead sulfide quantum dots. J. Am. Chem. Soc. 2021, 143, 13824–13834.
Crossref Google Scholar
[20]

Giansante, C.; Infante, I.; Fabiano, E.; Grisorio, R.; Suranna, G. P.; Gigli, G. “Darker-than-Black” PbS quantum dots: Enhancing optical absorption of colloidal semiconductor nanocrystals via short conjugated ligands. J. Am. Chem. Soc. 2015, 137, 1875–1886.
Crossref Google Scholar
[21]

Frederick, M. T.; Weiss, E. A. Relaxation of exciton confinement in CdSe quantum dots by modification with a conjugated dithiocarbamate ligand. ACS Nano 2010, 4, 3195–3200.
Crossref Google Scholar
[22]

Frederick, M. T.; Amin, V. A.; Weiss, E. A. Optical properties of strongly coupled quantum dot-ligand systems. J. Phys. Chem. Lett. 2013, 4, 634–640.
Crossref Google Scholar
[23]

Brown, P. R.; Kim, D.; Lunt, R. R.; Zhao, N.; Bawendi, M. G.; Grossman, J. C.; Bulović, V. Energy level modification in lead sulfide quantum dot thin films through ligand exchange. ACS Nano 2014, 8, 5863–5872.
Crossref Google Scholar
[24]

Kuznetsova, V. A.; Mates-Torres, E.; Prochukhan, N.; Marcastel, M.; Purcell-Milton, F.; O’Brien, J.; Visheratina, A. K.; Martinez-Carmona, M.; Gromova, Y.; Garcia-Melchor, M. et al. Effect of chiral ligand concentration and binding mode on chiroptical activity of CdSe/CdS quantum dots. ACS Nano 2019, 13, 13560–13572.
Crossref Google Scholar
[25]

Choi, J. K.; Haynie, B. E.; Tohgha, U.; Pap, L.; Elliott, K. W.; Leonard, B. M.; Dzyuba, S. V.; Varga, K.; Kubelka, J.; Balaz, M. Chirality inversion of CdSe and CdS quantum dots without changing the stereochemistry of the capping ligand. ACS Nano 2016, 10, 3809–3815.
Crossref Google Scholar
[26]

Kuno, J.; Imamura, Y.; Katouda, M.; Tashiro, M.; Kawai, T.; Nakashima, T. Inversion of optical activity in the synthesis of mercury sulfide nanoparticles: Role of ligand coordination. Angew. Chem., Int. Ed. 2018, 57, 12022–12026.
Crossref Google Scholar
[27]

Eagle, F. W.; Park, N.; Cash, M.; Cossairt, B. M. Surface chemistry and quantum dot luminescence: Shell growth, atomistic modification, and beyond. ACS Energy Lett. 2021, 6, 977–984.
Crossref Google Scholar
[28]

Zhang, X.; Chen, Y.; Lian, L.; Zhang, Z.; Liu, Y.; Song, L.; Geng, C.; Zhang, J.; Xu, S. Stability enhancement of PbS quantum dots by site-selective surface passivation for near-infrared LED application. Nano Res. 2021, 14, 628–634.
Crossref Google Scholar
[29]

Gao, C.; Wang, J.; Xu, H. X.; Xiong, Y. J. Coordination chemistry in the design of heterogeneous photocatalysts. Chem. Soc. Rev. 2017, 46, 2799–2823.
Crossref Google Scholar
[30]

Yang, S. Y.; Prendergast, D.; Neaton, J. B. Tuning semiconductor band edge energies for solar photocatalysis via surface ligand passivation. Nano Lett. 2012, 12, 383–388.
Crossref Google Scholar
[31]

Dong, A. G.; Ye, X. C.; Chen, J.; Kang, Y. J.; Gordon, T.; Kikkawa, J. M.; Murray, C. B. A generalized ligand-exchange strategy enabling sequential surface functionalization of colloidal nanocrystals. J. Am. Chem. Soc. 2011, 133, 998–1006.
Crossref Google Scholar
[32]

Preske, A.; O’Neill, S. W.; Swartz, B. D.; Liu, J.; Prezhdo, O. V.; Krauss, T. D. Size-programmed synthesis of PbSe quantum dots via secondary phosphine chalcogenides. Chem. Mater. 2019, 31, 8301–8307.
Crossref Google Scholar
[33]

De Nolf, K.; Capek, R. K.; Abe, S.; Sluydts, M.; Jang, Y.; Martins, J. C.; Cottenier, S.; Lifshitz, E.; Hens, Z. Controlling the size of hot injection made nanocrystals by manipulating the diffusion coefficient of the solute. J. Am. Chem. Soc. 2015, 137, 2495–2505.
Crossref Google Scholar
[34]

Zhang, M. Y.; Liu, A. A.; Fu, H. H.; Zhang, W.; Zhang, S. H.; Liu, Z. Y.; Jiang, L. H.; Shao, X.; Pang, D. W. Regulation of silver precursor reactivity via tertiary phosphine to synthesize near-infrared Ag2Te with photoluminescence quantum yield of up to 14.7%. Chem. Mater. 2021, 33, 9524–9533.
Crossref Google Scholar
[35]

Frederick, M. T.; Amin, V. A.; Cass, L. C.; Weiss, E. A. A molecule to detect and perturb the confinement of charge carriers in quantum dots. Nano Lett. 2011, 11, 5455–5460.
Crossref Google Scholar
[36]

Nag, A.; Kovalenko, M. V.; Lee, J. S.; Liu, W. Y.; Spokoyny, B.; Talapin, D. V. Metal-free inorganic ligands for colloidal nanocrystals: S2−, HS−, Se2−, HSe−, Te2−, HTe−, TeS32−, OH−, and NH2− as surface ligands. J. Am. Chem. Soc. 2011, 133, 10612–10620.
Crossref Google Scholar
[37]

Wang, W. L.; Guo, Y.; Tiede, C.; Chen, S. Y.; Kopytynski, M.; Kong, Y. F.; Kulak, A.; Tomlinson, D.; Chen, R. J.; McPherson, M. et al. Ultraefficient cap-exchange protocol to compact biofunctional quantum dots for sensitive ratiometric biosensing and cell imaging. ACS Appl. Mater. Interfaces 2017, 9, 15232–15244.
Crossref Google Scholar
[38]

Liu, Z. Y.; Liu, A. A.; Fu, H. H.; Cheng, Q. Y.; Zhang, M. Y.; Pan, M. M.; Liu, L. P.; Luo, M. Y.; Tang, B.; Zhao, W. et al. Breaking through the size control dilemma of silver chalcogenide quantum dots via trialkylphosphine-induced ripening: Leading to Ag2Te emitting from 950 to 2100 nm. J. Am. Chem. Soc. 2021, 143, 12867–12877.
Crossref Google Scholar
[39]

Liu, A. A.; Sun, E. Z.; Wang, Z. G.; Liu, S. L.; Pang, D. W. Artificially regulated synthesis of nanocrystals in live cells. Natl. Sci. Rev. 2022, 9, nwab162.
Crossref Google Scholar
[40]

Gu, Y. P.; Cui, R.; Zhang, Z. L.; Xie, Z. X.; Pang, D. W. Ultrasmall near-infrared Ag2Se quantum dots with tunable fluorescence for in vivo imaging. J. Am. Chem. Soc. 2012, 134, 79–82.
Crossref Google Scholar
[41]

Zhao, J. Y.; Chen, G.; Gu, Y. P.; Cui, R.; Zhang, Z. L.; Yu, Z. L.; Tang, B.; Zhao, Y. F.; Pang, D. W. Ultrasmall magnetically engineered Ag2Se quantum dots for instant efficient labeling and whole-body high-resolution multimodal real-time tracking of cell-derived microvesicles. J. Am. Chem. Soc. 2016, 138, 1893–1903.
Crossref Google Scholar
[42]

Zhao, J. Y.; Wang, Z. G.; Hu, H.; Zhang, Z. L.; Tang, B.; Luo, M. Y.; Yang, L. L.; Wang, B. S.; Pang, D. W. How different are the surfaces of semiconductor Ag2Se quantum dots with various sizes. Sci. Bull. 2022, 67, 619–625.
Crossref Google Scholar
[43]

Kim, H. J.; Heo, C. H.; Kim, H. M. Benzimidazole-based ratiometric two-photon fluorescent probes for acidic pH in live cells and tissues. J. Am. Chem. Soc. 2013, 135, 17969–17977.
Crossref Google Scholar
[44]

Chang, M. J.; Kim, K.; Park, K. S.; Kang, J. S.; Lim, C. S.; Kim, H. M.; Kang, C.; Lee, M. H. High-depth fluorescence imaging using a two-photon FRET system for mitochondrial pH in live cells and tissues. Chem. Commun. 2018, 54, 13531–13534.
Crossref Google Scholar
[45]

Luo, X.; Yang, H. T.; Wang, H. L.; Ye, Z. W.; Zhou, Z. N.; Gu, L. Y.; Chen, J. Q.; Xiao, Y.; Liang, X. W.; Qian, X. H. et al. Highly sensitive hill-type small-molecule pH probe that recognizes the reversed pH gradient of cancer cells. Anal. Chem. 2018, 90, 5803–5809.
Crossref Google Scholar
[46]

Ning, P.; Hou, L. L.; Feng, Y.; Xu, G. Y.; Bai, Y. Y.; Yu, H. Z.; Meng, X. M. Real-time visualization of autophagy by monitoring the fluctuation of lysosomal pH with a ratiometric two-photon fluorescent probe. Chem. Commun. 2019, 55, 1782–1785.
Crossref Google Scholar
[47]

Feng, L. L.; Yu, G. T.; Wu, Y. Y.; Li, G. D.; Li, H.; Sun, Y. H.; Asefa, T.; Chen, W.; Zou, X. X. High-index faceted Ni3S2 nanosheet arrays as highly active and ultrastable electrocatalysts for water splitting. J. Am. Chem. Soc. 2015, 137, 14023–14026.
Crossref Google Scholar
[48]

Jerkiewicz, G. Standard and reversible hydrogen electrodes: Theory, design, operation, and applications. ACS Catal. 2020, 10, 8409–8417.
Crossref Google Scholar
[49]

Zhang, W.; Yu, Z. L.; Wu, M.; Ren, J. G.; Xia, H. F.; Sa, G. L.; Zhu, J. Y.; Pang, D. W.; Zhao, Y. F.; Chen, G. Magnetic and folate functionalization enables rapid isolation and enhanced tumor-targeting of cell-derived microvesicles. ACS Nano 2017, 11, 277–290.
Crossref Google Scholar
[50]

Tian, R.; Shen, Z. Y.; Zhou, Z. J.; Munasinghe, J.; Zhang, X.; Jacobson, O.; Zhang, M. X.; Niu, G.; Pang, D. W.; Cui, R. et al. Ultrasmall quantum dots with broad-spectrum metal doping ability for trimodal molecular imaging. Adv. Funct. Mater. 2019, 29, 1901671.
Crossref Google Scholar
[51]

Lv, C.; Zhang, T. Y.; Lin, Y.; Tang, M.; Zhai, C. H.; Xia, H. F.; Wang, J.; Zhang, Z. L.; Xie, Z. X.; Chen, G. et al. Transformation of viral light particles into near-infrared fluorescence quantum dot-labeled active tumor-targeting nanovectors for drug delivery. Nano Lett. 2019, 19, 7035–7042.
Crossref Google Scholar
[52]

Moreels, I.; Justo, Y.; De Geyter, B.; Haustraete, K.; Martins, J. C.; Hens, Z. Size-tunable, bright, and stable PbS quantum dots: A surface chemistry study. ACS Nano 2011, 5, 2004–2012.
Crossref Google Scholar
[53]

Moreels, I.; Fritzinger, B.; Martins, J. C.; Hens, Z. Surface chemistry of colloidal PbSe nanocrystals. J. Am. Chem. Soc. 2008, 130, 15081–15086.
Crossref Google Scholar
[54]

Wu, Z. K.; Gayathri, C.; Gil, R. R.; Jin, R. C. Probing the structure and charge state of glutathione-capped Au25(SG)18 clusters by NMR and mass spectrometry. J. Am. Chem. Soc. 2009, 131, 6535–6542.
Crossref Google Scholar
[55]

Fritzinger, B.; Capek, R. K.; Lambert, K.; Martins, J. C.; Hens, Z. Utilizing self-exchange to address the binding of carboxylic acid ligands to CdSe quantum dots. J. Am. Chem. Soc. 2010, 132, 10195–10201.
Crossref Google Scholar
[56]

Akira, I. NMR analysis of cellulose dissolved in aqueous NaOH solutions. Cellulose 1997, 4, 99–107.
Crossref Google Scholar
[57]

Hassan, Y.; Park, J. H.; Crawford, M. L.; Sadhanala, A.; Lee, J.; Sadighian, J. C.; Mosconi, E.; Shivanna, R.; Radicchi, E.; Jeong, M. et al. Ligand-engineered bandgap stability in mixed-halide perovskite LEDs. Nature 2021, 591, 72–77.
Crossref Google Scholar
[58]

Mićić, O. I.; Sprague, J.; Lu, Z. H.; Nozik, A. J. Highly efficient band-edge emission from InP quantum dots. Appl. Phys. Lett. 1996, 68, 3150–3152.
Crossref Google Scholar
[59]

Ji, C. Y.; Zhang, Y.; Zhang, T. Q.; Liu, W. Y.; Zhang, X. Y.; Shen, H. Z.; Wang, Y.; Gao, W. Z.; Wang, Y. D.; Zhao, J. et al. Temperature-dependent photoluminescence of Ag2Se quantum dots. J. Phys. Chem. C 2015, 119, 13841–13846.
Crossref Google Scholar
[60]

Tang, R.; Lee, H.; Achilefu, S. Induction of pH sensitivity on the fluorescence lifetime of quantum dots by NIR fluorescent dyes. J. Am. Chem. Soc. 2012, 134, 4545–4548.
Crossref Google Scholar
[61]

Amelia, M.; Lincheneau, C.; Silvi, S.; Credi, A. Electrochemical properties of CdSe and CdTe quantum dots. Chem. Soc. Rev. 2012, 41, 5728–5743.
Crossref Google Scholar
[62]

Haram, S. K.; Quinn, B. M.; Bard, A. J. Electrochemistry of CdS nanoparticles: A correlation between optical and electrochemical band gaps. J. Am. Chem. Soc. 2001, 123, 8860–8861.
Crossref Google Scholar
[63]

Inamdar, S. N.; Ingole, P. P.; Haram, S. K. Determination of band structure parameters and the quasi-particle gap of CdSe quantum dots by cyclic voltammetry. ChemPhysChem 2008, 9, 2574–2579.
Crossref Google Scholar
[64]

Querner, C.; Reiss, P.; Sadki, S.; Zagorska, M.; Pron, A. Size and ligand effects on the electrochemical and spectroelectrochemical responses of CdSe nanocrystals. Phys. Chem. Chem. Phys. 2005, 7, 3204–3209.
Crossref Google Scholar
[65]

Haram, S. K.; Kshirsagar, A.; Gujarathi, Y. D.; Ingole, P. P.; Nene, O. A.; Markad, G. B.; Nanavati, S. P. Quantum confinement in CdTe quantum dots: Investigation through cyclic voltammetry supported by density functional theory (DFT). J. Phys. Chem. C 2011, 115, 6243–6249.
Crossref Google Scholar
[66]

Kucur, E.; Riegler, J.; Urban, G. A.; Nann, T. Determination of quantum confinement in CdSe nanocrystals by cyclic voltammetry. J. Chem. Phys. 2003, 119, 2333–2337.
Crossref Google Scholar
[67]

Cui, R.; Gu, Y. P.; Bao, L.; Zhao, J. Y.; Qi, B. P.; Zhang, Z. L.; Xie, Z. X.; Pang, D. W. Near-infrared electrogenerated chemiluminescence of ultrasmall Ag2Se quantum dots for the detection of dopamine. Anal. Chem. 2012, 84, 8932–8935.
Crossref Google Scholar
[68]

Poznyak, S. K.; Talapin, D. V.; Shevchenko, E. V.; Weller, H. Quantum dot chemiluminescence. Nano Lett. 2004, 4, 693–698.
Crossref Google Scholar
[69]

Sun, Q. J.; Wang, H. Q.; Yang, C. H.; Li, Y. F. Synthesis and electroluminescence of novel copolymers containing crown ether spacers. J. Mater. Chem. 2003, 13, 800–806.
Crossref Google Scholar
[70]

Beaupré, S.; Leclerc, M. Fluorene-based copolymers for red-light-emitting diodes. 3.0.CO;2-U">Adv. Funct. Mater. 2002, 12, 192–196.
Crossref Google Scholar
[71]

Brus, L. E. Electron–electron and electron–hole interactions in small semiconductor crystallites: The size dependence of the lowest excited electronic state. J. Chem. Phys. 1984, 80, 4403–4409.
Crossref Google Scholar
[72]

Praharaj, S.; Nath, S.; Panigrahi, S.; Basu, S.; Ghosh, S. K.; Pande, S.; Jana, S.; Pal, T. Room temperature synthesis of coinage metal (Ag, Cu) chalcogenides. Chem. Commun. 2006, 36, 3836–3838.
Crossref Google Scholar
[73]

Sahu, A.; Khare, A.; Deng, D. D.; Norris, D. J. Quantum confinement in silver selenide semiconductor nanocrystals. Chem. Commun. 2012, 48, 5458–5460.
Crossref Google Scholar
[74]

He, C.; Weinberg, D. J.; Nepomnyashchii, A. B.; Lian, S. C.; Weiss, E. A. Control of the redox activity of PbS quantum dots by tuning electrostatic interactions at the quantum dot/solvent interface. J. Am. Chem. Soc. 2016, 138, 8847–8854.
Crossref Google Scholar
Nano Research
Volume 16 Issue 11,
November 2023
Pages 12608-12617
DOI: 10.1007/s12274-023-5688-9
Cite this article:
Luo M-Y, Tang B, Liu A-A, et al. A robust and unique approach for tuning the energy level of Ag2Se quantum dots via “on-surface” manipulation of nitrogen-containing groups of surface-coordinated ligands. Nano Research, 2023, 16(11): 12608-12617. https://doi.org/10.1007/s12274-023-5688-9
Topics:
Semiconductor quantum dots

950

Views

6

Crossref

6

Web of Science

6

Scopus

1

CSCD

Altmetrics
Received: 05 January 2023
Revised: 23 March 2023
Accepted: 25 March 2023
Published: 19 April 2023
© Tsinghua University Press 2023
Return