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Photochemistry in Asia
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Photochemistry in Asia

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Photochemistry".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 1872

Special Issue Editor

Prof. Dr. Jianzhang Zhao

E-Mail Website
Guest Editor
State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
Interests: charge separation; electron transfer; energy transfer; intersystem crossing; triplet state

Special Issue Information

Dear Colleagues,

Photochemistry is a branch of chemistry with strong connections to a wide range of scientific fields, including physics, organic and inorganic chemistry, material science, biology and medicine. Key areas of photochemical research include the study of photon absorption, energy transfer, electron transfer and the dynamics of excited states. Advanced photocatalysts are a major focus in photochemistry due to their potential applications in solar energy conversion, environmental remediation and synthetic chemistry.

Interdisciplinary collaboration, combining our knowledge from chemistry, physics and material science, is crucial for addressing complex photochemical challenges. Recent advances in spectroscopic techniques and computational modelling are providing deeper insights into the fundamental aspects of photochemistry.

Photochemistry in Asia has been an active field for decades. Therefore, it is our pleasure to announce a new Special Issue entitled as such, i.e., “Photochemistry in Asia”. This Special Issue will present a high-quality collection comprising works from scientists in Asian countries, with both original research articles and comprehensive review papers being welcome.

Prof. Dr. Jianzhang Zhao
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • photochemistry
  • photophysics
  • photocatalysts
  • synthetic photochemistry
  • photoelectrochemistry
  • computational photochemistry
  • luminescent molecular sensors
  • nanomaterials
  • electron transfer
  • energy transfer

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

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Research

18 pages, 2433 KiB  
Article
Development of 2,1,3-Benzothiadiazole-Based Room-Temperature Fluorescent Nematic Liquid Crystals
by Muhammad Suhail bin Uzair, Yoshimichi Shimomura, Takuya Tanaka, Takashi Kajitani and Gen-ichi Konishi
Molecules 2025, 30(11), 2438; https://doi.org/10.3390/molecules30112438 - 2 Jun 2025
Viewed by 398
Abstract
Fluorescent liquid crystals (LCs) have attracted considerable interest owing to their unique combination of fluidity, anisotropy, and intrinsic emission. However, most reported fluorescent LCs exhibit high phase transition temperatures and/or smectic phases, limiting their practical applications. To address this, we designed and synthesized [...] Read more.
Fluorescent liquid crystals (LCs) have attracted considerable interest owing to their unique combination of fluidity, anisotropy, and intrinsic emission. However, most reported fluorescent LCs exhibit high phase transition temperatures and/or smectic phases, limiting their practical applications. To address this, we designed and synthesized a series of 2,1,3-benzothiadiazole (BTD)-based fluorescent nematic liquid crystals incorporating donor (D) or acceptor (A) groups to form D–A–D or D–A–A structures. Most of the synthesized derivatives exhibited supercooled nematic phases at room temperature. They composed various functional groups, such as secondary alkylamine, branched alkyl chain, and trifluoroacetyl groups, which are rarely used in calamitic nematic LCs. Notably, dimethylamine- and carbonyl-substituted derivatives exhibited relatively high fluorescence quantum yields (Φfl) in both solid and mesophase states, demonstrating their potential as efficient fluorescent materials. Our findings underscore the versatility of BTD-based mesogenic skeletons for designing room-temperature fluorescent nematic LCs with various functional groups. These materials offer promising opportunities for next-generation display technologies, optical sensors, and photonic applications. Full article
(This article belongs to the Special Issue Photochemistry in Asia)
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13 pages, 1143 KiB  
Article
Activation of Perovskite Nanocrystals for Volumetric Displays Using Near-Infrared Photon Upconversion by Triplet Fusion
by Yu Hu, Guiwen Luo, Pengfei Niu, Ling Zhang, Tianjun Yu, Jinping Chen, Yi Li and Yi Zeng
Molecules 2025, 30(11), 2273; https://doi.org/10.3390/molecules30112273 - 22 May 2025
Viewed by 205
Abstract
Coupling organic light-harvesting materials with lead halide perovskite quantum dots (LHP QDs) is an attractive approach that could provide great potential in optoelectronic applications owing to the diversity of organic materials available and the intriguing optical and electronic properties of LHP QDs. Here, [...] Read more.
Coupling organic light-harvesting materials with lead halide perovskite quantum dots (LHP QDs) is an attractive approach that could provide great potential in optoelectronic applications owing to the diversity of organic materials available and the intriguing optical and electronic properties of LHP QDs. Here, we demonstrate energy collection by CsPbI3 QDs from a near-infrared (NIR) light-harvesting upconversion system. The upconversion system consists of Pd-tetrakis-5,10,15,20-(p-methoxycarbonylphenyl)-tetraanthraporphyrin (PdTAP) as the sensitizer to harvest NIR photons and rubrene as the annihilator to generate upconverted photons via triplet fusion. Steady-state and time-resolved photoluminescence spectra reveal that CsPbI3 QDs are energized via radiative energy transfer from the singlet excited rubrene with photophysics fidelity of respective components. In addition, a volumetric display demo incorporating CsPbI3 QDs as light emitters employing triplet fusion upconversion was developed, showing bright luminescent images from CsPbI3 QDs. These results present the feasibility of integrating organic light-harvesting systems and perovskite QDs, enabling diverse light harvesting and activation of perovskite materials for optoelectronic applications. Full article
(This article belongs to the Special Issue Photochemistry in Asia)
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11 pages, 3527 KiB  
Article
Tailoring Red-to-Blue Emission in In1−xGaxP/ZnSe/ZnS Quantum Dots Using a Novel [In(btsa)2Cl]2 Precursor and GaI3
by Calem Duah, Ji-Seoung Jeong, Ji Yeon Ryu, Bo Keun Park, Young Kuk Lee and Seon Joo Lee
Molecules 2025, 30(1), 35; https://doi.org/10.3390/molecules30010035 - 26 Dec 2024
Viewed by 784
Abstract
Ternary In1−xGaxP quantum dots (QDs) have emerged as promising materials for efficient blue emission, owing to their tunable bandgap, high stability, and superior optoelectronic properties. However, most reported methods for Ga incorporation into the InP structure have predominantly relied [...] Read more.
Ternary In1−xGaxP quantum dots (QDs) have emerged as promising materials for efficient blue emission, owing to their tunable bandgap, high stability, and superior optoelectronic properties. However, most reported methods for Ga incorporation into the InP structure have predominantly relied on cation exchange in pre-grown InP QDs at elevated temperatures above 280 °C. This is largely due to the fact that, when heating In and P precursors in the presence of Ga, an InP/GaP core–shell structure readily forms. Herein, we introduce a novel synthesis approach using the indium precursor [In(btsa)2Cl]2 and GaI3 to fabricate In1−xGaxP QDs in a single step at relatively low temperatures (200 °C). By adjusting the GaI3 content, we achieved controlled emission tuning from red to blue. Structural and compositional analysis through X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) confirmed successful Ga3+ incorporation into the QD core, with a corresponding blue shift in the emission as GaI3 content increased. The synthesized QDs demonstrated a photoluminescence quantum yield (PLQY) of ~50% and a full width at half maximum (FWHM) of 45~62 nm, highlighting the potential of this synthesis method for advanced optoelectronic applications. Full article
(This article belongs to the Special Issue Photochemistry in Asia)
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