Category: 576-83-0

Xia, Youfu; Du, Yanqing; Xiang, Qian; Humphrey, Mark G. published the artcile< Highly efficient room-temperature phosphorescent materials with a heavy-atom effect of bromine>, Synthetic Route of 576-83-0, the main research area is bromine carbazole phosphorescent material crystal packing.

Room-temperature phosphorescent (RTP) materials with long luminescence lifetimes have stimulated considerable interest. However, pure organic mols. with persistent room-temperature phosphorescence are still rarely reported. In this work, we study two mols., DCzMPh and TCzMPh, in which persistent room-temperature phosphorescence in the amorphous state is achieved via the heavy-atom effect of bromine atoms in their structure. Their final quantum yields are found to be as high as 90 and 93%, resp., at the phosphorescence lifetimes of 0.27 and 0.28 s, resp. Moreover, both mols. are shown to be appropriate for security protection applications.

New Journal of Chemistry published new progress about Crystal packing (particle). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Synthetic Route of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Arikawa, Shinobu; Shimizu, Akihiro; Shiomi, Daisuke; Sato, Kazunobu; Shintani, Ryo published the artcile< Synthesis and Isolation of a Kinetically Stabilized Crystalline Triangulene>, Quality Control of 576-83-0, the main research area is preparation mesityl substituted triangulene crystal structure triplet ground state.

The synthesis and isolation of hydrocarbons with a triplet ground state in crystalline forms have been sought in materials science. Triangulene is one of the most famous triplet-ground-state benzenoid hydrocarbons. Its unique electronic structure and highly sym. structure have prompted many scientists to synthesize and isolate triangulene and its derivatives, but all attempts so far to isolate them as crystals have been unsuccessful. Herein we report the synthesis and isolation of a kinetically stabilized crystalline triangulene for the first time. The key to success is the introduction of bulky substituents onto the reactive zigzag edges. Its highly sym. structure was confirmed by X-ray crystallog., and its fundamental properties, including the triplet ground state, were revealed. The achievement here will open the door for the synthesis and isolation of other hydrocarbons with higher spin multiplicity.

Journal of the American Chemical Society published new progress about Aromaticity. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Quality Control of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Xia, Youfu; Du, Yanqing; Xiang, Qian; Humphrey, Mark G. published the artcile< Highly efficient room-temperature phosphorescent materials with a heavy-atom effect of bromine>, Synthetic Route of 576-83-0, the main research area is bromine carbazole phosphorescent material crystal packing.

Room-temperature phosphorescent (RTP) materials with long luminescence lifetimes have stimulated considerable interest. However, pure organic mols. with persistent room-temperature phosphorescence are still rarely reported. In this work, we study two mols., DCzMPh and TCzMPh, in which persistent room-temperature phosphorescence in the amorphous state is achieved via the heavy-atom effect of bromine atoms in their structure. Their final quantum yields are found to be as high as 90 and 93%, resp., at the phosphorescence lifetimes of 0.27 and 0.28 s, resp. Moreover, both mols. are shown to be appropriate for security protection applications.

New Journal of Chemistry published new progress about Crystal packing (particle). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Synthetic Route of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Arikawa, Shinobu; Shimizu, Akihiro; Shiomi, Daisuke; Sato, Kazunobu; Shintani, Ryo published the artcile< Synthesis and Isolation of a Kinetically Stabilized Crystalline Triangulene>, Quality Control of 576-83-0, the main research area is preparation mesityl substituted triangulene crystal structure triplet ground state.

The synthesis and isolation of hydrocarbons with a triplet ground state in crystalline forms have been sought in materials science. Triangulene is one of the most famous triplet-ground-state benzenoid hydrocarbons. Its unique electronic structure and highly sym. structure have prompted many scientists to synthesize and isolate triangulene and its derivatives, but all attempts so far to isolate them as crystals have been unsuccessful. Herein we report the synthesis and isolation of a kinetically stabilized crystalline triangulene for the first time. The key to success is the introduction of bulky substituents onto the reactive zigzag edges. Its highly sym. structure was confirmed by X-ray crystallog., and its fundamental properties, including the triplet ground state, were revealed. The achievement here will open the door for the synthesis and isolation of other hydrocarbons with higher spin multiplicity.

Journal of the American Chemical Society published new progress about Aromaticity. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Quality Control of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Zhang, Jingjing; Yang, Jin-Dong; Cheng, Jin-Pei published the artcile< Exploiting the radical reactivity of diazaphosphinanes in hydrodehalogenations and cascade cyclizations>, Synthetic Route of 576-83-0, the main research area is arene preparation; aryl bromide hydrodehalogenation bis tertbutyl diazaphosphinane mediated; dihydro indene preparation chemoselective; bromide aryl cascade cyclization bis tertbutyl diazaphosphinane mediated.

Radical reactivity of diazaphosphinanes to implement hydrodehalogenations of aryl bromides and their cascade cyclization by hydride transfer was reported to give aromatic hydrocarbons R-H [R = Ph, 2-naphthyl, 4-MeOC6H4, etc.] and dihydro-indene derivatives I [X = NH, O, S]. These reactions featured a broad substrate scope, high efficiency and simplicity of manipulation. The radical reactivity of diazaphosphinanes disclosed here differed from their well-established hydridic reactivity and hence opened a new avenue for diazaphosphinane applications in organic syntheses.

Chemical Science published new progress about Aromatic hydrocarbons Role: SPN (Synthetic Preparation), PREP (Preparation). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Synthetic Route of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Lu, Ru-Qiang; Wu, Shuang; Yang, Lin-Lin; Gao, Wen-Bin; Qu, Hang; Wang, Xiao-Ye; Chen, Jun-Bo; Tang, Chun; Shi, Hai-Yan; Cao, Xiao-Yu published the artcile< Stable Diindeno-Fused Corannulene Regioisomers with Open-Shell Singlet Ground States and Large Diradical Characters>, Related Products of 576-83-0, the main research area is diindeno corannulene regioisomer singlet triplet diradical crystal structure; corannulene; macrocycles; polycycles; radicals; structure elucidation.

The synthesis of open-shell polycyclic hydrocarbons with large diradical characters is challenging because of their high reactivities. Herein, two diindeno-fused corannulene regioisomers DIC-1 and DIC-2, curved fragments of fullerene C104, were synthesized that exhibit open-shell singlet ground states. The incorporation of the curved and non-alternant corannulene moiety within diradical systems leads to significant diradical characters as high as 0.98 for DIC-1 and 0.89 for DIC-2. Such high diradical characters can presumably be ascribed to the re-aromatization of the corannulene π system. Although the DIC compounds have large diradical characters, they display excellent stability under ambient conditions. The half-lives are 37 days for DIC-1 and 6.6 days for DIC-2 in solution This work offers a new design strategy towards diradicaloids with large diradical characters yet maintain high stability.

Angewandte Chemie, International Edition published new progress about Acylation, regioselective. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Related Products of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Irmler, Peter; Gogesch, Franciska S.; Larsen, Christopher B.; Wenger, Oliver S.; Winter, Rainer F. published the artcile< Four different emissions from a Pt(Bodipy)(PEt3)2(S-Pyrene) dyad>, Quality Control of 576-83-0, the main research area is BPtSPyr MesPtSPyr dyad toluene acetone emission.

The Pt(bodipy)-(mercaptopyrene) dyad BPtSPyr shows four different emissions: intense near-IR phosphorescence (Φph up to 15%) from a charge-transfer state pyrS ̇+-Pt-BDP ̇-, addnl. fluorescence and phosphorescence emissions from the 1ππ* and 3ππ* states of the bodipy ligand at r.t., and phosphorescence from the pyrene 3ππ* and the bodipy 3ππ* states in a glassy matrix at 77 K.

Dalton Transactions published new progress about Energy level. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Quality Control of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Avinash, Iruthayaraj; Parveen, Sabeeha; Anantharaman, Ganapathi published the artcile< Backbone Boron-Functionalized Imidazoles/Imidazolium Salts: Synthesis, Structure, Metalation Studies, and Fluoride Sensing Properties>, Application of C9H11Br, the main research area is boryl phosphino functionalized imidazole imidazolium salt preparation crystal structure; metalation fluoride sensing boryl phosphino functionalized imidazole imidazolium salt; copper boryl phosphino imidazole copper preparation photophys crystal structure.

Incorporation of a Lewis acidic BMes2 (Mes = mesityl) moiety at the backbone of the imidazole ring was achieved by metal-halogen exchange procedure. Among them, two isomeric boron-phosphine functionalized imidazoles (3 and 6), monoboron-functionalized imidazoles (4 and 5), and its corresponding imidazolium salts were synthesized and thoroughly characterized. The solid-state structure of 3 reveals a dimeric B-N adduct that possesses six-membered [C-B-N]2 ring, and 5 crystallizes as tetrameric B-N adduct that forms an interesting 16-membered macrocycle, whereas 4 and 6 were obtained as monomeric BMes2-substituted imidazoles. 6 Behaves as a P^N-type ligand upon the coordination with CuI to afford luminescent L2Cu4I4-type metal complexes (10 and 11) whose photophys. properties were also studied. The presence (in 10) and the absence (in 11) of BMes2 made a remarkable impact on fluorescence emission causing shift from the green (10) to orange (11) region. The fluoride sensing properties of BMes2-containing imidazoles (4 to 9) were studied using UV-vis and fluorescence spectroscopy. Various backbone boron-functionalized imidazoles were prepared conveniently from 4,5-diiodo-1-methylimidazole through metal-halogen exchange procedure, and the corresponding imidazolium salts were prepared by quaternization reaction. Fluoride sensing properties of six imidazol(ium)e-based boranes were evaluated. In addition, metalation studies of BMes2-substituted P^N-type imidazole ligand with CuI led to the formation of two luminescent [(P^N)2Cu4I4]-type copper clusters, and their photophys. studies illustrate the impact of the BMes2 group on their electronic/photophys. properties.

Inorganic Chemistry published new progress about Crystal structure. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Application of C9H11Br.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Yao, Shengxin; Gai, Lizhi; Jiang, Liang; Liu, Hui; Mack, John; Zhao, Yue; Chan, Kin Shing; Shen, Zhen published the artcile< Low-symmetry porphyrin analogues with flexible open-form dithienylethene moieties: Intense near IR Q bands>, Recommanded Product: 2,4,6-Trimethylbromobenzene, the main research area is symmetry porphyrin dithienylethene moiety intense near IR Q band.

Two low-symmetry porphyrinoids with a dithienylethene (DTE) moiety incorporated into the core macrocycle, that contain either a CHO or a bridging Me ether group, have been serendipitously synthesized through a Rothemund condensation reaction. X-ray crystal structures demonstrate that CHO and bridging Me ether groups on the DTE moiety changes the conformation of the macrocycle and significantly influences the relative energies of the frontier orbitals of the porphyrinoid π-system and results in a remarkable enhancement and broadening of the Q bands in the 450-800 nm region compared to those of conventional tetrapyrrolic porphyrins. The introduction of a DTE moiety provides an effective strategy for achieving the intense near-IR region absorption that is required for many of the practical applications of porphyrinoids, through a disruption of the macrocyclic π-system that is similar to that of naturally occurring corrins.

Dyes and Pigments published new progress about Bond angle, dihedral. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Recommanded Product: 2,4,6-Trimethylbromobenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

MacKenzie, Ian A.; Wang, Leifeng; Onuska, Nicholas P. R.; Williams, Olivia F.; Begam, Khadiza; Moran, Andrew M.; Dunietz, Barry D.; Nicewicz, David A. published the artcile< Discovery and characterization of an acridine radical photoreductant>, Electric Literature of 576-83-0, the main research area is intramol photoinduced electron transfer dehalogenation acridine detosylation photocatalyst photocatalysis.

Photoinduced electron transfer (PET) is a phenomenon whereby the absorption of light by a chem. species provides an energetic driving force for an electron-transfer reaction1-4. This mechanism is relevant in many areas of chem., including the study of natural and artificial photosynthesis, photovoltaics and photosensitive materials. In recent years, research in the area of photoredox catalysis has enabled the use of PET for the catalytic generation of both neutral and charged organic free-radical species. These technologies have enabled previously inaccessible chem. transformations and have been widely used in both academic and industrial settings. Such reactions are often catalyzed by visible-light-absorbing organic mols. or transition-metal complexes of ruthenium, iridium, chromium or copper5,6. Although various closed-shell organic mols. have been shown to behave as competent electron-transfer catalysts in photoredox reactions, there are only limited reports of PET reactions involving neutral organic radicals as excited-state donors or acceptors. This is unsurprising because the lifetimes of doublet excited states of neutral organic radicals are typically several orders of magnitude shorter than the singlet lifetimes of known transition-metal photoredox catalysts7-11. Here we document the discovery, characterization and reactivity of a neutral acridine radical with a maximum excited-state oxidation potential of -3.36 V vs. a SCE, which is similarly reducing to elemental lithium, making this radical one of the most potent chem. reductants reported12. Spectroscopic, computational and chem. studies indicate that the formation of a twisted intramol. charge-transfer species enables the population of higher-energy doublet excited states, leading to the observed potent photoreducing behavior. We demonstrate that this catalytically generated PET catalyst facilitates several chem. reactions that typically require alkali metal reductants and can be used in other organic transformations that require dissolving metal reductants.

Nature (London, United Kingdom) published new progress about Dehalogenation catalysts, photochem.. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Electric Literature of 576-83-0.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary