Psychoactive Plant Database - Neuroactive Phytochemical Collection

1. Small. 2024 Sep 2:e2405071. doi: 10.1002/smll.202405071. Online ahead of
print.

Rational Design of A-Site Cation for High Performance Lead-Free Perovskite X-Ray 
Detectors.

Zhang B(1), Zhang Y(2), Su H(3), Huang E(4), Zhao Z(1), Xu Z(1), Liu Y(1), Zhang 
L(1), Zeng Z(2), You J(2), Jen AK(2), Liu SF(3)(5).

Author information:
(1)Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of 
Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi 
Engineering Lab for Advanced Energy Technology, International Joint Research 
Center of Shaanxi Province for Photoelectric Materials Science, Institute for 
Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi 
Normal University, Xi'an, 710119, China.
(2)Department of Materials Science and Engineering, Hong Kong Institute for 
Clean Energy, City University of Hong Kong, Hong Kong SAR, 999077, China.
(3)Key Laboratory of Photoelectric Conversion and Utilization of Solar Energy, 
Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 
Liaoning, 116023, China.
(4)Research Institute of Medical and Biological Engineering, Ningbo University, 
Zhejiang, 315211, China.
(5)Center of Materials Science and Optoelectronics Engineering, University of 
Chinese Academy of Sciences, Beijing, 100049, P. R. China.

Design of hypotoxic lead-free perovskites, e.g. Bismuth(Bi)-based perovskites, 
is much beneficial for commercialization of perovskite X-ray detectors due to 
their strong radiation absorption. Nevertheless, the design principles governing 
the selection of A-site cations for achieving high-performance X-ray detectors 
remain elusive. Here, seven molecules (methylamine MA, amine NH3, 
dimethylbiguanide DGA, phenylethylamine PEA, 4-fluorophenethylamine p-FPEA, 
1,3-propanediamine PDA, and 1,4-butanediamine BDA) and calculated their dipole 
moments and interaction strength with metal halide (BiI3) are selected. The 
first-principles calculations and related spectroscopy measurements confirm that 
organic molecules (DGA) with large dipole moments can have strong interactions 
with perovskite octahedron and improve the carrier transport between the organic 
and inorganic clusters. Consequently, zero-dimensional single crystal (SC) 
(DGA)BiI5∙H2O is synthesized. The (DGA)BiI5∙H2O SCs demonstrate an exceptional 
carrier mobility-lifetime product of 6.55 × 10-3 cm2 V-1, resulting in the high 
sensitivity of 5879.4 µCGyair -1cm-2, featuring a low detection limit 
(4.7 nGyair s-1) and remarkable X-ray irradiation stability even after 100 days 
of aging at a high electric field (100 V mm-1). Furthermore, the (DGA)BiI5∙H2O 
SCs for imaging, achieving a notable spatial resolution of 5.5 lp mm-1 are 
applied. This investigation establishes a pathway for systematically screening 
A-site cations to design low-dimensional SCs for high-performance X-ray 
detection.

© 2024 Wiley‐VCH GmbH.

DOI: 10.1002/smll.202405071
PMID: 39221666


2. Nat Commun. 2024 Aug 26;15(1):7335. doi: 10.1038/s41467-024-51703-0.

Surface chemical polishing and passivation minimize non-radiative recombination 
for all-perovskite tandem solar cells.

Pan Y(#)(1)(2), Wang J(#)(1)(2), Sun Z(1), Zhang J(1), Zhou Z(1), Shi C(1), Liu 
S(1), Ren F(1), Chen R(1), Cai Y(1), Sun H(1), Liu B(3), Zhang Z(3), Zhao Z(4), 
Cai Z(4), Qin X(4), Zhao Z(4), Ji Y(5)(6), Li N(3), Huang W(5)(6), Liu Z(7)(8), 
Chen W(9)(10).

Author information:
(1)Wuhan National Laboratory for Optoelectronics, Huazhong University of Science 
and Technology, Luoyu Road 1037, Wuhan, 430074, China.
(2)Optics Valley Laboratory, Hubei, 430074, China.
(3)State Key Laboratory of Silicate Materials for Architectures, Wuhan 
University of Technology, Wuhan, 430070, China.
(4)Huaneng Clean Energy Research Institute, Beijing, China.
(5)Key State Laboratory of Advanced Technology for Materials Synthesis and 
Processing, School of Materials Science and Engineering, Wuhan University of 
Technology, Wuhan, 430070, China.
(6)Hubei Longzhong Laboratory, Wuhan University of Technology Xiangyang 
Demonstration Zone, 441000, Xiangyang, China.
(7)Wuhan National Laboratory for Optoelectronics, Huazhong University of Science 
and Technology, Luoyu Road 1037, Wuhan, 430074, China. liuzonghao@hust.edu.cn.
(8)Optics Valley Laboratory, Hubei, 430074, China. liuzonghao@hust.edu.cn.
(9)Wuhan National Laboratory for Optoelectronics, Huazhong University of Science 
and Technology, Luoyu Road 1037, Wuhan, 430074, China. wnlochenwei@hust.edu.cn.
(10)Optics Valley Laboratory, Hubei, 430074, China. wnlochenwei@hust.edu.cn.
(#)Contributed equally

All-perovskite tandem solar cells have shown great promise in breaking the 
Shockley-Queisser limit of single-junction solar cells. However, the efficiency 
improvement of all-perovskite tandem solar cells is largely hindered by the 
surface defects induced non-radiative recombination loss in Sn-Pb mixed narrow 
bandgap perovskite films. Here, we report a surface reconstruction strategy 
utilizing a surface polishing agent, 1,4-butanediamine, together with a surface 
passivator, ethylenediammonium diiodide, to eliminate Sn-related defects and 
passivate organic cation and halide vacancy defects on the surface of Sn-Pb 
mixed perovskite films. Our strategy not only delivers high-quality Sn-Pb mixed 
perovskite films with a close-to-ideal stoichiometric ratio surface but also 
minimizes the non-radiative energy loss at the perovskite/electron transport 
layer interface. As a result, our Sn-Pb mixed perovskite solar cells with 
bandgaps of 1.32 and 1.25 eV realize power conversion efficiencies of 22.65% and 
23.32%, respectively. Additionally, we further obtain a certified power 
conversion efficiency of 28.49% of two-junction all-perovskite tandem solar 
cells.

© 2024. The Author(s).

DOI: 10.1038/s41467-024-51703-0
PMCID: PMC11347601
PMID: 39187539

Conflict of interest statement: The authors declare no competing interests.


3. Adv Sci (Weinh). 2024 May;11(18):e2309500. doi: 10.1002/advs.202309500. Epub 
2024 Mar 6.

Charge Injection and Auger Recombination Modulation for Efficient and Stable 
Quasi-2D Perovskite Light-Emitting Diodes.

Ngai KH(1)(2), Sun X(2), Zou X(3), Fan K(3), Wei Q(4), Li M(4), Li S(5), Lu 
X(5), Meng W(1), Wu B(1), Zhou G(1), Long M(1), Xu J(2).

Author information:
(1)South China Academy of Advanced Optoelectronics, South China Normal 
University, Guangzhou, 510006, China.
(2)Department of Electronic Engineering, The Chinese University of Hong Kong, 
Shatin, New Territories, 999077, Hong Kong.
(3)Department of Physics and William Mong Institute of Nano Science and 
Technology, The Hong Kong University of Science and Technology, Clear Water Bay, 
Kowloon, 999077, Hong Kong.
(4)Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, 
999077, Hong Kong.
(5)Department of Physics, The Chinese University of Hong Kong, Shatin, New 
Territories, 999077, Hong Kong.

The inefficient charge transport and large exciton binding energy of quasi-2D 
perovskites pose challenges to the emission efficiency and roll-off issues for 
perovskite light-emitting diodes (PeLEDs) despite excellent stability compared 
to 3D counterparts. Herein, alkyldiammonium cations with different molecular 
sizes, namely 1,4-butanediamine (BDA), 1,6-hexanediamine (HDA) and 
1,8-octanediamine (ODA), are employed into quasi-2D perovskites, to 
simultaneously modulate the injection efficiency and recombination dynamics. The 
size increase of the bulky cation leads to increased excitonic recombination and 
also larger Auger recombination rate. Besides, the larger size assists the 
formation of randomly distributed 2D perovskite nanoplates, which results in 
less efficient injection and deteriorates the electroluminescent performance. 
Moderate exciton binding energy, suppressed 2D phases and balanced carrier 
injection of HDA-based PeLEDs contribute to a peak external quantum efficiency 
of 21.9%, among the highest in quasi-2D perovskite based near-infrared devices. 
Besides, the HDA-PeLED shows an ultralong operational half-lifetime T50 up to 
479 h at 20 mA cm‒2, and sustains the initial performance after a record-level 
30 000 cycles of ON-OFF switching, attributed to the suppressed migration of 
iodide anions into adjacent layers and the electrochemical reaction in 
HDA-PeLEDs. This work provides a potential direction of cation design for 
efficient and stable quasi-2D-PeLEDs.

© 2024 The Authors. Advanced Science published by Wiley‐VCH GmbH.

DOI: 10.1002/advs.202309500
PMCID: PMC11095209
PMID: 38447143

Conflict of interest statement: The authors declare no conflict of interest.


4. Materials (Basel). 2023 Nov 24;16(23):7319. doi: 10.3390/ma16237319.

Poly(glycerol itaconate) Crosslinking via the aza-Michael Reaction-A Preliminary 
Research.

Miętus M(1), Kolankowski K(1), Gołofit T(1), Ruśkowski P(1), Mąkosa-Szczygieł 
M(2), Gadomska-Gajadhur A(1).

Author information:
(1)Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3 Street, 
00-664 Warsaw, Poland.
(2)Faculty of Natural Sciences, Department of Chemistry, Norwegian University of 
Science and Technology, 7034 Trondheim, Norway.

In unsaturated glycerol polyesters, the C=C bond is present. It makes it 
possible to carry out post-polymerisation modification (PPM) reactions, such as 
aza-Michael addition. This reaction can conduct crosslinking under in-situ 
conditions for tissue engineering regeneration. Until now, no description of 
such use of aza-Michael addition has been described. This work aims to crosslink 
the synthesised poly(glycerol itaconate) (PGItc; P3), polyester from itaconic 
acid (AcItc), and glycerol (G). The PGItc syntheses were performed in three 
ways: without a catalyst, in the presence of p-toluenesulfonic acid (PTSA), and 
in the presence of zinc acetate (Zn(OAc)2). PGItc obtained with Zn(OAc)2 (150 
°C, 4 h, G:AcItc = 2:1) was used to carry out the aza-Michael additions. 
Crosslinking reactions were conducted with each of the five aliphatic diamines: 
1,2-ethylenediamine (1,2-EDA; A1), 1,4-butanediamine (1,4-BDA; A2), 
1,6-hexanediamine (1,6-HDA; A3), 1,8-octanediamine (1,8-ODA; A4), and 
1,10-decanediamine (1,10-DDA; A5). Four ratios of the proton amine group: C=C 
bond were investigated. The maximum temperature and crosslinking time were 
measured to select the best amine for the addition product's application. FTIR, 
1H NMR, DSC, and TG analysis of the crosslinked products were also investigated.

DOI: 10.3390/ma16237319
PMCID: PMC10707276
PMID: 38068063

Conflict of interest statement: The authors declare no conflict of interest.


5. Molecules. 2023 Nov 3;28(21):7407. doi: 10.3390/molecules28217407.

The Phase Inversion Mechanism of the pH-Sensitive Reversible Invert Emulsion.

Liu F(1), Li Y(2), Li X(3), Wang X(1).

Author information:
(1)College of Petroleum Engineering, Shandong Institute of Petroleum and 
Chemical Technology, Dongying 257061, China.
(2)Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an 710065, 
China.
(3)Petroleum Engineering Technology Research Institute of Shengli Oilfield 
Company, China Petrochemical Corporation, Dongying 257061, China.

Reversible emulsification drilling fluids can achieve conversion between 
oil-based drilling fluids and water-based drilling fluids at different stages of 
drilling and completion, combining the advantages of both to achieve the desired 
drilling and completion effects. The foundation of reversible emulsion drilling 
fluids lies in reversible emulsions, and the core of a reversible emulsion is 
the reversible emulsifier. In this study, we prepared a reversible emulsifier, 
DMOB(N,N-dimethyl-N'-oleic acid-1,4-butanediamine), and investigated the 
reversible phase inversion process of reversible emulsions, including the 
changes in the reversible emulsifier (HLB) and its distribution at the oil-water 
interface (zeta potential). From the perspective of the acid-alkali response 
mechanism of reversible emulsifiers, we explored the reversible phase inversion 
mechanism of reversible emulsions and reversible emulsification drilling fluids. 
It was revealed that the reversible phase inversion of emulsions could be 
achieved by adjusting the pH of the emulsion system. Then the proportion of 
ionic surfactants changed in the oil-water interface and subsequently 
raised/lowered the HLB value of the composite emulsifier at the oil-water 
interface, leading to reversible phase inversion of the emulsion. The 
introduction of organic clays into reversible emulsification drilling fluid can 
affect the reversible conversion performance of the drilling fluids at the 
oil-water interface. Thus, we also investigated the influence of organic clays 
on reversible emulsions. It was demonstrated that a dosage of organic clay of 
≤2.50 g/100 mL could maintain the reversible phase inversion performance of 
reversible emulsions. By analyzing the microstructure of the emulsion and the 
complex oil-water interface, we revealed the mechanism of the influence of 
organic clay on the reversible emulsion. Organic clay distributed at the 
oil-water interface not only formed a complex emulsifier with surfactants, but 
also affected the microstructure of the emulsion, resulting in a difficult 
acid-induced phase transition, an easy alkali-induced phase transition, and 
improved overall stability.

DOI: 10.3390/molecules28217407
PMCID: PMC10650449
PMID: 37959826

Conflict of interest statement: The authors declare no conflict of interest.