Angewandte Chemie International Edition
10.1002/anie.202005643
RESEARCH ARTICLE
MSC-399 transformation is faster in dispersion with 0.7 mL OTA
than that with 1.0 mL OTA. The effect of the amine amount on the
absence of CdTe MSC-371 as well as on the transformation rate is
in agreement with Step 5 being favored by relatively large amine
amounts (such as 1.0 mL OTA).[6] The amine amount appears to
play a significant role in the equilibrium between Steps 5 and 6,
namely the stability of CdTe MSC-371 in Tol and OTA mixtures.[6]
Scheme S1-1 focuses on whether CdTe MSC-371 was absent
W. Huang, X. Chen, K. Yu, Angew. Chem. Int. Ed. 2020, DOI:
1
0.1002/anie.202001608.
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[
[
[
5]
6]
7]
(
Figure 2) or present (Figure 3) when the amine amount was
relatively small or large, respectively. Although the OTA amount
seems to influence the rate of the transformation, it does not
greatly influence the final quantity of CdTeSe MSC-399 that
evolves. Theoretical effort would be beneficial for a more basic
understanding of Scheme 1 at the molecular level, as well as how
primary amines assists the PC-371 to MSC-371 transformation
[8]
[
[
[
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(
Step 5), together with the PC-399 formation (Step 1) and
transformation to MSC-399 (Step 3). It is noteworthy that Figure 1
presents the disappearance (in Tol) and recovery (in a Tol and OTA
mixture) of CdTeSe MSC-399, and the latter process involved the
occurrence (Step 5) and vanishing (Step 6) of CdTe MSC-371. Thus,
Figure 1 provides the specific experimental evidence for Steps 3
and 4, which represent the reversible CdTeSe PC-399 CdTeSe
MSC-399 transformation, as well as for Step 2 the backward
direction of Eq 1. It is noteworthy that Scheme 1 is consistent with
the model proposed for the transformations among the four types
of CdTe MSCs, CdTe MSC-371, MSC-417, MSC-448, and dMSC-371,
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[35-50]
among the various types of binary ME MSCs.
The present
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Keywords: Magic-Size Clusters (MSCs)
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Quantum Dots • Cadmium Telluride Selenide (CdTeSe)
Nucleation • Crystal Growth
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