ChemPhotoChemPub Date : 2024-07-31DOI: 10.1002/cptc.202400156
Xinru Hu, Yan Dong, Yuyang Zhang, Xiaohua Chen, Chuanbao Yuan, Danyang Wang, Prof. Xuhong Qian, Prof. Xiao Luo, Prof. Youjun Yang
{"title":"Optimization of the Structural Rigidity of a Deep-NIR Scaffold for Bioimaging","authors":"Xinru Hu, Yan Dong, Yuyang Zhang, Xiaohua Chen, Chuanbao Yuan, Danyang Wang, Prof. Xuhong Qian, Prof. Xiao Luo, Prof. Youjun Yang","doi":"10.1002/cptc.202400156","DOIUrl":"10.1002/cptc.202400156","url":null,"abstract":"<p>Bright deep-NIR dyes are actively sought after for their potential in fluorescence-guided surgery and disease theranostics. The major bottleneck lies with the rigidification of the conjugative backbone to suppress non-radiative deactivation. <b>EC5</b> is a notable deep-NIR absorbing/emitting scaffold, which we first reported in 2017. We recently discovered that its diphenyl ether moiety exhibited structural freedom, which was detrimental to its fluorescence brightness. We proposed to enhance the structural rigidity of <b>EC5</b> via ring-contraction, i. e., changing the diphenyl ether moiety of <b>EC5E</b> into a biphenyl of <b>EC5B</b>, its low-frequency normal modes were largely suppressed as predicted by theoretical calculations, and a 55.0 % increase of fluorescence brightness in CH<sub>2</sub>Cl<sub>2</sub> was rendered experimentally. The bright <b>EC5B</b> was feasible for high-contrast <i>in vivo</i> imaging. <b>EC5B</b> has broad potential in practical biomedical applications.</p>","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 12","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141868705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemPhotoChemPub Date : 2024-07-31DOI: 10.1002/cptc.202400191
Long He, Jing Huang, Xingxing Zhang, Tianbing Ren, Prof. Lin Yuan
{"title":"Asymmetric π-Extension Design of Long Wavelength Rhodamine Derivatives for Imaging and Phototherapy","authors":"Long He, Jing Huang, Xingxing Zhang, Tianbing Ren, Prof. Lin Yuan","doi":"10.1002/cptc.202400191","DOIUrl":"10.1002/cptc.202400191","url":null,"abstract":"<p>Rhodamine dyes have been extensively explored for bioimaging and therapeutic applications over the past few decades. However, it remains a challenge to design long-wavelength and large Stokes shift rhodamine derivatives to meet the requirements of fluorescence imaging and phototherapy in deep living tissues. In this work, a pyridine aromatic unit was inserted into the rhodamine derivatives (AC-Fluor: ACF) skeleton to prepare a series of stable rhodamine derivatives, named ACFPs, to achieve long emission wavelength (>650 nm) and large Stokes shift (~60 nm) by tuning the conjugated systems and electronic symmetry. Moreover, ACFPs are capable of continuously producing superoxide radical (O<sub>2</sub><sup>−</sup>⋅) under long wavelength irradiation. This study presents a novel paradigm for improving the optical properties of rhodamine, which has led to the development of a novel tool for image-guided phototherapy for cancer treatment.</p>","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 12","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141882885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemPhotoChemPub Date : 2024-07-30DOI: 10.1002/cptc.202400179
Sameer Ahmad Malik, Nandita Madhavan
{"title":"H+/X− Co-Transport Driven by Azobenzene Containing Aromatic Amides","authors":"Sameer Ahmad Malik, Nandita Madhavan","doi":"10.1002/cptc.202400179","DOIUrl":"10.1002/cptc.202400179","url":null,"abstract":"<p>Natural ion-transporters in cellular membranes play a critical role in maintaining cell homeostasis. Synthetic ion-transporters are attractive model systems for understanding and addressing dysfunction of natural transporters. Herein, a simple amide derived from azobenzene and <i>m</i>-aminobenzoic acid achieves photoregulated ion transport across lipid membranes. The amide forms pores or channels that selectively co-transport H<sup>+</sup>/X<sup>−</sup> across the lipid membrane. Photoisomerization from the <i>trans</i> to <i>cis</i> form results in a 2-fold increase in ion-transport rates due to the higher proton affinity of the <i>cis</i> isomer.</p>","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 12","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141868865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemPhotoChemPub Date : 2024-07-27DOI: 10.1002/cptc.202400184
Wen Yao, Xiaojuan Song, Dr. Lin Xue, Dr. Shanshan Liu, Linglong Tang, Prof. Yanli Chen, Dr. Heyuan Liu, Prof. Xiyou Li
{"title":"Classification and Summary of Photocatalytic Chemical Reactions Driven by Triplet-Triplet Annihilation Upconversion","authors":"Wen Yao, Xiaojuan Song, Dr. Lin Xue, Dr. Shanshan Liu, Linglong Tang, Prof. Yanli Chen, Dr. Heyuan Liu, Prof. Xiyou Li","doi":"10.1002/cptc.202400184","DOIUrl":"10.1002/cptc.202400184","url":null,"abstract":"<p>Triplet-triplet annihilation upconversion (TTA-UC) technology could convert low-energy light into high-energy light, and it is a very promising one of the upconversion technologies due to its non-coherent excitation light, low required excitation optical power density and sensitizer/annihilator flexible adjustability. The application of TTA-UC into photocatalysis could not only broaden the range of solar energy spectrum utilization, but also bring mild reaction conditions and higher product yields via avoiding the side reaction. However, the detailed catalytic mechanism of TTA-UC is unclear. Therefore, in this review, we summarized and classified TTA-UC photocatalytic chemical reactions in terms of mechanism.</p>","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 12","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemPhotoChemPub Date : 2024-07-26DOI: 10.1002/cptc.202400038
D. S. Ivan Jebakumar, Vallabha Rao Rikka
{"title":"Eco-friendly Visible Wavelength Photodetectors Based on Colloidal Molybdenum Trioxide Nanobelt Arrays","authors":"D. S. Ivan Jebakumar, Vallabha Rao Rikka","doi":"10.1002/cptc.202400038","DOIUrl":"10.1002/cptc.202400038","url":null,"abstract":"<p>In an era marked by a growing emphasis on sustainability and innovation, the quest for eco-friendly solutions to energy conversion devices capable of harnessing visible light has gained paramount importance. In response to this critical demand, we demonstrate visible light-responsive photoswitching from molybdenum trioxide nanobelt arrays in the photoconductive device fabricated using solution-processing technique. We exploit the visible light-driven modulation of conductivity in the reversibly switchable photochromic state of MoO<sub>3</sub> to develop a photochromism-assisted photoconductive photodetector with fast response (<0.1 s), significant photocurrent on/off ratio and excellent responsivity (41 AW<sup>−1</sup> at 459 nm) under the applied bias of 5 V. The light harvesting strategy presented herein holds the potential for efficient energy generation by harnessing visible light, even under low-light conditions.</p>","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 12","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemPhotoChemPub Date : 2024-07-25DOI: 10.1002/cptc.202400199
Marine Labro, Audrey Pollien, Dr. Maëlle Mosser, Delphine Pitrat, Jean-Christophe Mulatier, Mathilde Seinfeld, Prof. Dr. Tangui Le Bahers, Dr. Bruno Baguenard, Prof. Dr. Stéphan Guy, Dr. Cyrille Monnereau, Dr. Laure Guy
{"title":"A Photoinduced Annulation Strategy Towards a Polycyclic Heteroaromatic Chromophore: Scope, Mechanism, Properties and Applications","authors":"Marine Labro, Audrey Pollien, Dr. Maëlle Mosser, Delphine Pitrat, Jean-Christophe Mulatier, Mathilde Seinfeld, Prof. Dr. Tangui Le Bahers, Dr. Bruno Baguenard, Prof. Dr. Stéphan Guy, Dr. Cyrille Monnereau, Dr. Laure Guy","doi":"10.1002/cptc.202400199","DOIUrl":"10.1002/cptc.202400199","url":null,"abstract":"<p>This article reports a detailed mechanistic and kinetic study of an unusual photoreaction leading to the (diazonia)tetrabenzonaphthacene skeleton. The photo-triggered double intramolecular nucleophilic aromatic substitution (S<sub><i>N</i></sub>Ar*) has been investigated by varying the leaving groups. Photoreaction quantum yields have been determined and mechanistic insights have been supported by theoretical calculations using DFT and TD-DFT methods. Additionally, we show that this light-triggered formed diazonia constitutes a potent photosentitizer with a singlet oxygen generation quantum yield of 0.55, both in organic solvents and in water, which is an extremely relevant value in view of PDT applications or use as an oxidation photocatalyst in aqueous media. Once again, the experimental observations were supported by TD-DFT calculations showing a large density of triplet states below the S<sub>1</sub> excited state along with large spin-orbit couplings. The reaction is not restricted to solutions but can also occur in solid PDMS matrices thus allowing for photochemical encoding of information that will progressively vanish upon prolonged UV-exposure.</p>","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 12","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cptc.202400199","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141771196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemPhotoChemPub Date : 2024-07-24DOI: 10.1002/cptc.202400097
Shiyin Wang, Daojie Yang, Haichao Liu, Shi-Tong Zhang, Prof. Bing Yang
{"title":"Excimer-Induced Efficient Luminescence by Discrete Intermolecular π−π Stacking of Naphthalimide-Based Dimer","authors":"Shiyin Wang, Daojie Yang, Haichao Liu, Shi-Tong Zhang, Prof. Bing Yang","doi":"10.1002/cptc.202400097","DOIUrl":"10.1002/cptc.202400097","url":null,"abstract":"<p>π−π stacking interactions are generally thought to reduce the luminescence of materials. Here, a systematic investigation is conducted using a π−π stacking dimer with varying steric hindrance substituents as a model to illustrate how π−π stacking structure affects the luminescence efficiency of materials. Four naphthalimide (NI) derivative molecules were designed and synthesized by incorporating sterically hindered unilateral groups to achieve NIPH, NIP1C, NIP2C, and NIP3C. It was figured out that side group modification did affect their crystal packing structures and luminescent properties. On the one hand, the excimer state formed by strongly interacted π−π NI-based dimer (NIPH and NIP3C) enhances luminescence efficiency compared to the monomer state based on weakly interacted π−π NI-based dimers (NIP1C and NIP2C). On the other hand, the discrete stacking of NI-based dimers (NIP3C) further promotes luminescence efficiency compared to the nondiscrete stacking of NI-based dimers (NIPH). Among these four compounds, NIP3C exhibits discrete stacking of π−π NI-based dimer due to the large steric hindrance generated by propyl benzene, resulting in the highest luminescence efficiency of the NIP3C crystal. This work will provide further insight into the underlying mechanisms behind the high luminescence efficiency induced by π−π dimer stacking.</p>","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 12","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemPhotoChemPub Date : 2024-07-12DOI: 10.1002/cptc.202400171
Komal Trivedi, Bhanupriya Yadav, Rohit Shrivastav, Chetan K. Modi
{"title":"Synthesis of Ternary Photoactive Heterojunction B/CN@rGO for Visible Light Driven Selective Photooxidation of Benzyl Alcohol","authors":"Komal Trivedi, Bhanupriya Yadav, Rohit Shrivastav, Chetan K. Modi","doi":"10.1002/cptc.202400171","DOIUrl":"10.1002/cptc.202400171","url":null,"abstract":"<p>This work introduces a novel ternary heterostructure as a photocatalyst to selectively produce benzaldehyde from benzyl alcohol through photooxidation. We have synthesized bismuth vanadate functionalized graphitic carbon nitride decorated reduced graphene oxide B/CN@rGO ternary composite and subsequently subjected it to several characterization methodologies like XRD, FE-SEM, HR-TEM, XPS, FT-IR, TGA, UV-vis DRS, and EIS. The synthesized B/CN@rGO was effectively used in the photooxidation process to produce benzaldehyde from benzyl alcohol, employing a cost-effective white LED light of 200 W. Remarkable selectivity (100 %) towards the benzaldehyde was attained employing green oxidant H<sub>2</sub>O<sub>2</sub>. In addition, the synthesized photocatalyst showed unique thermal stability and could be reused for over five cycles without compromising the selectivity of the resulting product. Based on our comprehensive review of the existing study, the present work introduces a unique approach for the photooxidation of benzyl alcohol, employing B/CN@rGO ternary heterostructure as the photocatalyst.</p>","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 12","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optical Emission Spectra of Molecular Excitonic Polariton Computed at the First-Principles Level QED-TDDFT","authors":"Shanhao Deng, Junjie Yang, Yihan Shao, Qi Ou, Prof. Zhigang Shuai","doi":"10.1002/cptc.202400117","DOIUrl":"10.1002/cptc.202400117","url":null,"abstract":"<p>In microcavity, strong coupling between light and molecules leads to the formation of hybrid excitations, i. e., the polaritons, or exciton-polaritons. Such coupling may alter the energy landscape of the system and the optical properties of the material, making it an effective approach for controlling the light emission from molecular materials. However, due to the complexity of vibrational modes, spectroscopic calculations for organic exciton-polaritons remain to be challenging. In this work, based on the linear-response quantum-electrodynamical time-dependent density functional theory (QED-TDDFT), we employ the thermal vibrational correlation function (TVCF) formalism to calculate the molecular optical spectrum of the lower polaritons (LP) at first-principles level for three molecules, i. e., anthracene, distyrylbenzenes (DSB), and rubrene. The polaron decoupling effect is confirmed from our first-principles computations. The theoretical emission spectra of LP provide new insights for aiding molecular and device design in microcavities that are otherwise hindered due to the lack of vibrational information.</p>","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 12","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ChemPhotoChemPub Date : 2024-07-10DOI: 10.1002/cptc.202480701
Jiawei Liu, Dr. Cheng Chen, Anatolii I. Sokolov, Dr. Mikhail S. Baranov, Prof. Dr. Chong Fang
{"title":"Front Cover: Substituent Effects in the Cationic Green Fluorescent Protein Chromophore: Ultrafast Excited-State Proton Transfer or Twisting? (ChemPhotoChem 7/2024)","authors":"Jiawei Liu, Dr. Cheng Chen, Anatolii I. Sokolov, Dr. Mikhail S. Baranov, Prof. Dr. Chong Fang","doi":"10.1002/cptc.202480701","DOIUrl":"https://doi.org/10.1002/cptc.202480701","url":null,"abstract":"<p><b>The Front Cover</b> illustrates ultrafast spectroscopic insights into photoexcited energy relaxation pathways of the cationic green fluorescent protein (GFP) chromophore derivatives in aqueous solution. The electron-withdrawing and electron-donating groups (EWGs and EDGs) notably affect the ring-twisting rates on femtosecond-to-picosecond timescales, whereas excited-state proton transfer (ESPT) to solvent molecules occurs more rapidly in competition. Cover design by Jiawei Liu, Cheng Chen, and Chong Fang. More information can be found in their Research Article (DOI 10.1002/cptc.202400037).<figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 7","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cptc.202480701","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141583903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}