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1. Corannurylene Pentapetalae

Author:
Meng, Dong; Liu, Guogang; Xiao, Chengyi; Shi, Yanjun; Zhang, Lei; Jiang, Lang; Baldridge, Kim K.; Li, Yan; Siegel, Jay S.; Wang, Zhaohui
Source:
Journal of the American Chemical Society 2019 v.141 no.13 pp. 5402-5408
ISSN:
1520-5126
Subject:
electron transfer,   etc   ; chemical interactions; transistors;     Show all 3 Subjects
Abstract:
... Despite the great advances in the synthesis of diverse nonplanar graphenoids, investigations into the relationship between structural features and intermolecular interactions still present significant challenges. Herein, the novel nonplanar graphenoid structure, corannurylene pentapetalae (CRP), obtained via bottom-up syntheses of hybridization between perylene diimide (PDI) planar fragments and a ...
DOI:
10.1021/jacs.9b00053

2. Rigidification of a macrocyclic tris-catecholate scaffold leads to electronic localisation of its mixed valent redox product

Author:
Greatorex, Sam; Vincent, Kevin B.; Baldansuren, Amgalanbaatar; McInnes, Eric J. L.; Patmore, Nathan J.; Sproules, Stephen; Halcrow, Malcolm A.
Source:
Chemical communications 2019 v.55 no.16 pp. 2281-2284
ISSN:
1364-548X
Subject:
electron transfer,   etc   ; chemical compounds; oxidation;     Show all 3 Subjects
Abstract:
... The catecholate groups in [{Pt(L)}₃(μ₃-tctq)] (H₆tctq = 2,3,6,7,10,11-hexahydroxy-4b,8b,12b,12d-tetramethyltribenzotriquinacene; L = a diphosphine chelate) undergo sequential oxidation to their semiquinonate forms by voltammetry, with ΔE₁/₂ = 160–170 mV. The monoradical [{Pt(dppb)}₃(μ₃-tctq˙)]⁺ is valence-localised, with no evidence for intervalence charge transfer in its near-IR spectrum. This co ...
DOI:
10.1039/c8cc10122a

3. Universal Fermi-Level Pinning in Transition-Metal Dichalcogenides

Author:
Sotthewes, Kai; van Bremen, Rik; Dollekamp, Edwin; Boulogne, Tim; Nowakowski, Krystian; Kas, Daan; Zandvliet, Harold J. W.; Bampoulis, Pantelis
Source:
Journal of physical chemistry 2019 v.123 no.9 pp. 5411-5420
ISSN:
1932-7455
Subject:
electron transfer,   etc   ; physical chemistry; semiconductors;     Show all 3 Subjects
Abstract:
... Understanding the electron transport through transition-metal dichalcogenide (TMDC)-based semiconductor/metal junctions is vital for the realization of future TMDC-based (opto-)electronic devices. Despite the bonding in TMDCs being largely constrained within the layers, strong Fermi-level pinning (FLP) was observed in TMDC-based devices, reducing the tunability of the Schottky barrier height. We p ...
DOI:
10.1021/acs.jpcc.8b10971

4. Multifunctional asymmetrical molecules for high-performance perovskite and organic solar cells

Author:
Gao, Wei; Wu, Fei; Liu, Tao; Zhang, Guangye; Chen, Zhanxiang; Zhong, Cheng; Zhu, Linna; Liu, Feng; Yan, He; Yang, Chuluo
Source:
Journal of materials chemistry A 2019 v.7 no.5 pp. 2412-2420
ISSN:
2050-7496
Subject:
electron transfer,   etc   ; energy; solar cells;     Show all 3 Subjects
Abstract:
... Two asymmetrical molecules, namely IDT6CN-TM and IDT6CN-4F, are developed and used for multiple energy applications. The properties of these molecules, such as a wide absorption range, suitable energy levels, strong π–π stacking in a face-on orientation and high electron mobility, make them promising materials that can play different roles in both perovskite and organic solar cells (PVKSCs and OSC ...
DOI:
10.1039/c8ta10975c

5. Cyclopenta[b]thiopyran and cyclopenta[b]selenopyran based heteroarenes: electronic communication between S- and/or Se-fused aromatics

Author:
Qiao, Yanjun; Lu, Yifan; Chen, Weinan; Chen, Yijing; Baumgarten, Martin; Zhou, Gang
Source:
Chemical communications 2019 v.55 no.35 pp. 5107-5110
ISSN:
1364-548X
Subject:
electron transfer,   etc   ; aromatic compounds; moieties; oxidation;     Show all 4 Subjects
Abstract:
... S- and Se-heteroarenes containing cyclopenta[b]thiopyran and/or cyclopenta[b]selenopyran moieties have been synthesized via PtCl₂-catalyzed ring-expanding cycloaromatizations. Intervalence charge transfer bands can be observed for the three heteroarenes upon chemical oxidation, suggesting the electronic communication between S- and/or Se-fused aromatics. ...
DOI:
10.1039/c9cc01761e

6. Spin dependent resonant electron tunneling through planar graphene barriers

Author:
Liu, Shuanglong; Wang, Yun-Peng; Fry, James N.; Cheng, Hai-Ping
Source:
Carbon 2019 v.144 pp. 362-369
ISSN:
0008-6223
Subject:
electron transfer,   etc   ; boron nitride; electric potential; graphene;     Show all 4 Subjects
Abstract:
... We study spin-dependent electron transport properties of two dimensional graphene double and triple barrier junctions via first-principles calculations. The double barrier junction consists of two graphene leads, a quantum well of zigzag graphene nanoribbon (ZGNR) in the center, and two vacuum barriers separating the ZGNR from the two leads. Resonant electron tunneling occurs when the energy bands ...
DOI:
10.1016/j.carbon.2018.12.035

7. Repeat proteins as versatile scaffolds for arrays of redox-active FeS clusters

Author:
MejiasThese authors contributed equally to the work., Sara H.; Bahrami-Dizicheh, Zahra; Liutkus, Mantas; Sommer, Dayn Joshep; Astashkin, Andrei; Kodis, Gerdenis; Ghirlanda, Giovanna; Cortajarena, Aitziber L.
Source:
Chemical communications 2019 v.55 no.23 pp. 3319-3322
ISSN:
1364-548X
Subject:
electron transfer,   etc   ; chemical compounds; scaffolding proteins;     Show all 3 Subjects
Abstract:
... Arrays of one, two and four electron-transfer active [4Fe–4S] clusters were constructed on modular tetratricopeptide repeat protein scaffolds, with the number of clusters determined solely by the size of the scaffold. The constructs show reversible redox activity and transient charge stabilization necessary to facilitate charge transfer. ...
DOI:
10.1039/c8cc06827e

8. Physicochemical implications of alkoxide “mixing” in polyoxovanadium clusters for nonaqueous energy storage

Author:
VanGelder, Lauren E.; Schreiber, Eric; Matson, Ellen M.
Source:
Journal of materials chemistry A 2019 v.7 no.9 pp. 4893-4902
ISSN:
2050-7496
Subject:
electron transfer,   etc   ; electrochemistry; energy; solubility; solvents;     Show all 5 Subjects
Abstract:
... Identification of suitable charge carriers is essential for the success of nonaqueous energy storage systems. Thus, elucidation of structural parameters which affect the physicochemical properties of a molecule in organic solvent is of critical importance. Here, we continue our work related to the development of polyoxovanadium-alkoxide clusters for nonaqueous energy storage through the synthesis ...
DOI:
10.1039/c8ta12306c

9. Efficient Thick-Film Polymer Solar Cells with Enhanced Fill Factors via Increased Fullerene Loading

Author:
Duan, Chunhui; Peng, Zhengxing; Colberts, Fallon J. M.; Pang, Shuting; Ye, Long; Awartani, Omar M.; Hendriks, Koen H.; Ade, Harald; Wienk, Martijn M.; Janssen, René A. J.
Source:
ACS applied materials & interfaces 2019 v.11 no.11 pp. 10794-10800
ISSN:
1944-8252
Subject:
electron transfer,   etc   ; fullerene; manufacturing; polymers; solar cells;     Show all 5 Subjects
Abstract:
... Developing effective methods to make efficient bulk-heterojunction polymer solar cells at roll-to-roll relevant active layer thickness is of significant importance. We investigate the effect of fullerene content in polymer:fullerene blends on the fill factor (FF) and on the performance of thick-film solar cells for four different donor polymers PTB7-Th, PDPP-TPT, BDT-FBT-2T, and poly[5,5′-bis(2-bu ...
DOI:
10.1021/acsami.9b00337

10. Photophysical Action Spectra of Emission from Semiconductor Nanocrystals Reveal Violations to the Vavilov Rule Behavior from Hot Carrier Effects

Author:
Li, Bo; Brosseau, Patrick J.; Strandell, Dallas P.; Mack, Timothy G.; Kambhampati, Patanjali
Source:
Journal of physical chemistry 2019 v.123 no.8 pp. 5092-5098
ISSN:
1932-7455
Subject:
electron transfer,   etc   ; nanocrystals; physical chemistry; semiconductors; spectroscopy;     Show all 5 Subjects
Abstract:
... Semiconductor nanocrystals are known to have properties of bulk semiconductors as well as molecules. Two rules that govern molecules are that there is no dual emission (Kasha) and there is no spectrum to the emission quantum yield (Vavilov). We show that the latter rule of molecular spectroscopy is generally violated in semiconductor nanocrystals. Through experiments and theory on CdSe and perovsk ...
DOI:
10.1021/acs.jpcc.8b11218

11. Supramolecular aggregation of a redox-active copper-naphthalenediimide network with intrinsic electron conduction

Author:
Kuang, Xiaofei; Chen, Shanci; Meng, Lingyi; Chen, Jing; Wu, Xiaoyuan; Zhang, Guanhua; Zhong, Guiming; Hu, Ting; Li, Yuhang; Lu, Can-Zhong
Source:
Chemical communications 2019 v.55 no.11 pp. 1643-1646
ISSN:
1364-548X
Subject:
electron transfer,   etc   ; chemical communication; coordination polymers; energy;     Show all 4 Subjects
Abstract:
... A sextuple ordered interpenetrated copper-naphthalenediimide network has been constructed by combining the features of porous metal–organic frameworks and π-conjugated supramolecular aggregation. The material exhibits intrinsic semiconductive features with narrow bandgap energy (1.2 eV) and outstanding electron transport. Theoretical calculations combined with experiments indicate that the high el ...
DOI:
10.1039/c8cc10269d

12. Correction: Long-lived charge separation in dye–semiconductor assemblies: a pathway to multi-electron transfer reactions

Author:
Sundin, Elin; Abrahamsson, Maria
Source:
Chemical communications 2019 v.55 no.8 pp. 1176
ISSN:
1364-548X
Subject:
electron transfer,   etc   ; chemical compounds; dyes; semiconductors;     Show all 4 Subjects
Abstract:
... Correction for ‘Long-lived charge separation in dye–semiconductor assemblies: a pathway to multi-electron transfer reactions’ by Elin Sundin et al., Chem. Commun., 2018, 54, 5289–5298. ...
DOI:
10.1039/c8cc90557f

13. Fluoro- and Amino-Functionalized Conjugated Polymers as Electron Transport Materials for Perovskite Solar Cells with Improved Efficiency and Stability

Author:
Tian, Li; Hu, Zhicheng; Liu, Xiaocheng; Liu, Zixian; Guo, Peipei; Xu, Baomin; Xue, Qifan; Yip, Hin-Lap; Huang, Fei; Cao, Yong
Source:
ACS applied materials & interfaces 2019 v.11 no.5 pp. 5289-5297
ISSN:
1944-8252
Subject:
electron transfer,   etc   ; hydrophobicity; polymers; solar cells;     Show all 4 Subjects
Abstract:
... We report here novel bifunctionalized electron transport materials (ETMs) that can improve the efficiency and stability of perovskite solar cells (PVSCs) simultaneously. By functionalizing n-type conjugated polymers with fluoro and amino side chains, PN, PN-F25%, and PN-F50% with varied contents of fluoro and amino side chains are prepared. It is found that the amino side chains in ETMs efficientl ...
DOI:
10.1021/acsami.8b19036

14. Coexistence of MLCT Excited States of Different Symmetry upon Photoexcitation of a Single Molecular Species

Author:
Oviedo, Paola S.; Pieslinger, German E.; Baraldo, Luis M.; Cadranel, Alejandro; Guldi, Dirk M.
Source:
Journal of physical chemistry 2019 v.123 no.6 pp. 3285-3291
ISSN:
1932-7455
Subject:
electron transfer,   etc   ; energy; photochemical reactions; physical chemistry;     Show all 4 Subjects
Abstract:
... Photoexcitation of [Ru(tpy)(bpy)(μ-CN)Ru(py)₄Cl]²⁺ ([RuRu]²⁺) at 387 nm results in the population of two ³MLCT excited states of different symmetry that coexist on the nanosecond scale. Common to both states is an excited electron in a tpy-based orbital. Their configuration differs in the position of the hole. In one excited state, ³MLCTz, the hole sits in an orbital parallel to the intermetallic ...
DOI:
10.1021/acs.jpcc.8b09499

15. Electron polarons in the subsurface layer of Mo/W-doped BiVO₄ surfaces

Author:
Cen, Jianhang; Li, Shunning; Zheng, Jiaxin; Pan, Feng
Source:
RSC advances 2019 v.9 no.2 pp. 819-823
ISSN:
2046-2069
Subject:
electron transfer,   etc   ; energy; metal ions; molybdenum; photocatalysts;     Show all 5 Subjects
Abstract:
... Monoclinic BiVO₄ has been regarded as a promising photocatalyst for water splitting in recent years. In this research, the effects of Mo/W dopants near the surfaces of BiVO₄ on electron transport are investigated using first-principles calculations. We demonstrate that the additional electron introduced by Mo/W either in the bulk or near the surfaces forms a self-trapped small polaron. The polaron ...
DOI:
10.1039/c8ra09009b

16. Mixed valency in ligand-bridged diruthenium frameworks: divergences and perspectives

Author:
Hazari, Arijit Singha; Indra, Arindam; Lahiri, Goutam Kumar
Source:
RSC advances 2018 v.8 no.51 pp. 28895-28908
ISSN:
2046-2069
Subject:
electron transfer,   etc   ; electrochemistry; ligands;     Show all 3 Subjects
Abstract:
... The present review article illustrates the mixed valence aspects of ligand-bridged symmetric and unsymmetric diruthenium complexes beyond the textbook example of the Creutz–Taube ion as well as the Robin and Day classification by citing representative examples based on our recent observations. The consideration of varied coordination situations involving bridging and ancillary ligands of diverse e ...
DOI:
10.1039/c8ra03206h

17. Formation of a long-lived radical pair in a Sn(iv) porphyrin–di(l-tyrosinato) conjugate driven by proton-coupled electron-transfer

Author:
Natali, Mirco; Amati, Agnese; Demitri, Nicola; Iengo, Elisabetta
Source:
Chemical communications 2018 v.54 no.48 pp. 6148-6152
ISSN:
1364-548X
Subject:
electron transfer,   etc   ; photochemistry; tin;     Show all 3 Subjects
Abstract:
... The novel conjugate 1, featuring two l-tyrosinato residues axially coordinated to the tin centre of a Sn(iv)-tetraphenylporphyrin, is reported as the first example of a supramolecular dyad for photochemical PCET. It is noteworthy that the excitation of 1 in the presence of a suitable base is followed by photoinduced PCET leading to a radical pair state with a surprisingly long lifetime. ...
DOI:
10.1039/c8cc03441a

18. Impact of bulky phenylalkyl substituents on the air-stable n-channel transistors of birhodanine analogues

Author:
Iijima, Kodai; Le Gal, Yann; Lorcy, Dominique; Mori, Takehiko
Source:
RSC advances 2018 v.8 no.33 pp. 18400-18405
ISSN:
2046-2069
Subject:
electron transfer,   etc   ; moieties; transistors;     Show all 3 Subjects
Abstract:
... By introducing bulky 2-phenylethyl groups into sulfur-rich electron acceptors, 5,5′-bithiazolidinylidene-2,2′-dione-4,4′-dithione and 5,5′-bithiazolidinylidene-2,4,2′,4′-tetrathione, electron transport with the mobility of 0.27 cm² V⁻¹ s⁻¹ with ambient and long-term stability is achieved in thin-film transistors. Bulky groups destroy the intermolecular S–S network, but the long-term transistor sta ...
DOI:
10.1039/c8ra03362e

19. Stable Metallic State of a Neutral-Radical Single-Component Conductor at Ambient Pressure

Author:
Le Gal, Yann; Roisnel, Thierry; Auban-Senzier, Pascale; Bellec, Nathalie; Íñiguez, Jorge; Canadell, Enric; Lorcy, Dominique
Source:
Journal of the American Chemical Society 2018 v.140 no.22 pp. 6998-7004
ISSN:
1520-5126
Subject:
electron transfer,   etc   ; gold; prototypes;     Show all 3 Subjects
Abstract:
... Molecular metals have been essentially obtained with tetrathiafulvalene (TTF)-based precursors, either with multicomponent ionic materials or, in a few instances, with single-component systems. In that respect, gold bis(dithiolene) complexes, in their neutral radical state, provide a prototype platform toward such single-component conductors. Herein we report the first single-component molecular m ...
DOI:
10.1021/jacs.8b03714

20. Polymer-Assisted Single Crystal Engineering of Organic Semiconductors To Alter Electron Transport

Author:
Xu, Haixiao; Zhou, Yecheng; Zhang, Jing; Jin, Jianqun; Liu, Guangfeng; Li, Yongxin; Ganguly, Rakesh; Huang, Li; Xu, Wei; Zhu, Daoben; Huang, Wei; Zhang, Qichun
Source:
ACS applied materials & interfaces 2018 v.10 no.14 pp. 11837-11842
ISSN:
1944-8252
Subject:
electron transfer,   etc   ; polymers; semiconductors;     Show all 3 Subjects
Abstract:
... A new crystal phase of a naphthalenediimide derivative (α-DPNDI) has been prepared via a facial polymer-assisted method. The stacking pattern of DPNDI can be tailored from the known one-dimensional (1D) ribbon (β phase) to a novel two-dimensional (2D) plate (α phase) through the assistance from polymers. We believe that the presence of polymers during crystal growth is likely to weaken the direct ...
DOI:
10.1021/acsami.8b01731