Shared posts

25 Feb 04:20

Carbonyl-Functionalized Cyclazines as Colorants and Air-Stable n-Type Semiconductors

by Artem Skabeev, Ute Zschieschang, Yulian Zagranyarski, Hagen Klauk, Klaus Müllen and Chen Li

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Organic Letters
DOI: 10.1021/acs.orglett.8b00183
21 Feb 09:32

Titanocene-Mediated Dinitrile Coupling: A Divergent Route to Nitrogen-Containing Polycyclic Aromatic Hydrocarbons

by Gavin R. Kiel, Adrian E. Samkian, Amélie Nicolay, Ryan J. Witzke and T. Don Tilley

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Journal of the American Chemical Society
DOI: 10.1021/jacs.7b13823
21 Feb 09:28

A Stable Blue Photosensitizer for Color Palette of Dye-Sensitized Solar Cells Reaching 12.6% Efficiency

by Yameng Ren, Danyang Sun, Yiming Cao, Hoi Nok Tsao, Yi Yuan, Shaik M. Zakeeruddin, Peng Wang and Michael Grätzel

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Journal of the American Chemical Society
DOI: 10.1021/jacs.7b12348
21 Feb 09:12

Fluorescent Cyanine Dye J-Aggregates in the Fluorous Phase

by Wei Cao and Ellen M. Sletten

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Journal of the American Chemical Society
DOI: 10.1021/jacs.7b11925
03 Jan 15:08

A Direct C–H Coupling Method for Preparing π-Conjugated Functional Polymers with High Regioregularity

by Qiang Zhang, Meijia Chang, Yan Lu, Yanna Sun, Chenxi Li, Xinlin Yang, Mingtao Zhang and Yongsheng Chen
KunYang

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Macromolecules
DOI: 10.1021/acs.macromol.7b02390
26 Dec 13:50

Synthesis and remarkable mechano- and thermo-hypsochromic luminescence of a new type of DPP-based derivative

J. Mater. Chem. C, 2018, 6,1377-1383
DOI: 10.1039/C7TC04698G, Paper
Zhongwei Liu, Kai Zhang, Qikun Sun, Zhenzhen Zhang, Liangliang Tang, Shanfeng Xue, Dongmei Chen, Haichang Zhang, Wenjun Yang
A new DPP dye emits a yellow color in solution but can aggregate into high contrast NIR, red, and yellow solids.
The content of this RSS Feed (c) The Royal Society of Chemistry
25 Dec 13:43

Aromaticity switching via azulene transformations in azulene-bridged A,D-dithiahexaphyrin

Chem. Commun., 2017, Accepted Manuscript
DOI: 10.1039/C7CC08754C, Communication
Michal Jacek Bialek, Lechoslaw Latos-Grazynski
The incorporation of an azulene bridge into an aromatic hexaphyrin framework allows to manipulate [small pi]-electron delocalization pathways. The palladium(II) complex undergoes the hydroxyl-triggered azulene contraction or isomerization to an oxynaphthalene...
The content of this RSS Feed (c) The Royal Society of Chemistry
25 Dec 13:30

[small pi]-Conjugation expanded isoindigo derivatives and the donor-acceptor conjugated polymers: synthesis and characterization

Chem. Commun., 2017, Accepted Manuscript
DOI: 10.1039/C7CC08603B, Communication
Hao Song, Yunfeng Deng, Yu Jiang, Hongkun Tian, Yanhou Geng
Two [small pi]-conjugation expanded isoindigo derivatives (DIID-PhCO and TIID-PhCO) composed of up to 18 rings and two donor-acceptor conjugated polymers based on DIID-PhCO were synthesized. Both polymers are ambipolar semiconductors with...
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Dec 16:04

Relating Structure to Efficiency in Surfactant-Free Polymer/Fullerene Nanoparticle-Based Organic Solar Cells

by Stefan Gärtner, Andrew J. Clulow, Ian A. Howard, Elliot P. Gilbert, Paul L. Burn, Ian R. Gentle and Alexander Colsmann

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ACS Applied Materials & Interfaces
DOI: 10.1021/acsami.7b15601
17 Dec 02:42

Polythiophene: From Fundamental Perspectives to Applications

by Thaneshwor P. Kaloni, Patrick K. Giesbrecht, Georg Schreckenbach and Michael S. Freund

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Chemistry of Materials
DOI: 10.1021/acs.chemmater.7b03035
16 Dec 13:04

Expanded Helicenes: A General Synthetic Strategy and Remarkable Supramolecular and Solid-State Behavior

by Gavin R. Kiel, Sajan C. Patel, Patrick W. Smith, Daniel S. Levine and T. Don Tilley
KunYang

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Journal of the American Chemical Society
DOI: 10.1021/jacs.7b10902
12 Dec 02:03

Incorporation of 2,6-Connected Azulene Units into the Backbone of Conjugated Polymers: Towards High-Performance Organic Optoelectronic Materials

by Xike Gao, Hanshen Xin, Congwu Ge, Xuechen Jiao, Xiaodi Yang, Kira Rundel, Chris McNeill

Abstract

Azulene is a promising candidate for constructing optoelectronic materials. An effective strategy is presented to obtain high-performance conjugated polymers by incorporating 2,6-connected azulene units into the polymeric backbone, and two conjugated copolymers P(TBAzDI-TPD) and P(TBAzDI-TFB) were designed and synthesized based on this strategy. They are the first two examples for 2,6-connected azulene-based conjugated polymers and exhibit unipolar n-type transistor performance with an electron mobility of up to 0.42 cm2 V−1 s−1, which is among the highest values for n-type polymeric semiconductors in bottom-gate top-contact organic field-effect transistors. Preliminary all-polymer solar cell devices with P(TBAzDI-TPD) as the electron acceptor and PTB7-Th as the electron donor display a power conversion efficiency of 1.82 %.

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An effective strategy for achieving high-performance polymers in optoelectronic materials by incorporation of 2,6-connected azulene units into the polymeric backbone is presented. Two examples of 2,6-connected azulene-based conjugated polymers were designed and synthesized, with an electron mobility of >0.4 cm2 V−1 s−1 for BGTC OFETs and a power conversion efficiency of >1.8 % for all-polymer solar cells.

11 Dec 01:21

B–N Lewis Pair Functionalization of Anthracene: Structural Dynamics, Optoelectronic Properties, and O2 Sensitization

by Kanglei Liu, Roger A. Lalancette and Frieder Jäkle

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Journal of the American Chemical Society
DOI: 10.1021/jacs.7b11062