High-Efficiency Fluorescence Quenching of Conjugated Polymers by Proteins

2002 ◽  
Vol 124 (20) ◽  
pp. 5642-5643 ◽  
Author(s):  
Chunhai Fan ◽  
Kevin W. Plaxco ◽  
Alan J. Heeger
Keyword(s):  
Fluorescence Quenching ◽  
Conjugated Polymers ◽  
High Efficiency

Fluorescence Quenching in Conjugated Polymers Blended with Reduced Graphitic Oxide

2010 ◽  
Vol 114 (9) ◽  
pp. 4153-4159 ◽  
Author(s):  
Yaobing Wang ◽  
Dharmalingam Kurunthu ◽  
Gary W. Scott ◽  
Christopher J. Bardeen
Keyword(s):  
Fluorescence Quenching ◽  
Conjugated Polymers

Ladder-like conjugated polymers used as hole-transporting materials for high-efficiency perovskite solar cells

2019 ◽  
Vol 7 (24) ◽  
pp. 14473-14477 ◽  
Author(s):  
Liren Zhang ◽  
Jionghua Wu ◽  
Dongmei Li ◽  
Wenhua Li ◽  
Qingbo Meng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Conjugated Polymers ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Hole Mobility ◽  
Homo Energy ◽  
Hole Transporting ◽  
Hole Transporting Materials ◽  
Homo Energy Level

Intramolecular S–O interactions were adopted for designing HTMs with high hole mobility and a suitable HOMO energy level in PVSK.

Metallated conjugated polymers as a new avenue towards high-efficiency polymer solar cells

2007 ◽  
Vol 6 (7) ◽  
pp. 521-527 ◽  
Author(s):  
Wai-Yeung Wong ◽  
Xing-Zhu Wang ◽  
Ze He ◽  
Aleksandra B. Djurišić ◽  
Cho-Tung Yip ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
High Efficiency ◽  
Polymer Solar Cells

Long-Term Thermal Stability of High-Efficiency Polymer Solar Cells Based on Photocrosslinkable Donor-Acceptor Conjugated Polymers

2011 ◽  
Vol 23 (14) ◽  
pp. 1660-1664 ◽  
Author(s):  
Gianmarco Griffini ◽  
Jessica D. Douglas ◽  
Claudia Piliego ◽  
Thomas W. Holcombe ◽  
Stefano Turri ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solar Cells ◽  
Conjugated Polymers ◽  
High Efficiency ◽  
Polymer Solar Cells ◽  
Donor Acceptor ◽  
Thermal Stability Of

Light-induced hole transfer in a hypervalent phosphorus(V) octaethylporphyrin bearing an axially linked bis(ethylenedithio)tetrathiafulvalene

2010 ◽  
Vol 14 (02) ◽  
pp. 178-187 ◽  
Author(s):  
Prashanth K. Poddutoori ◽  
Ann Dion ◽  
Songjie Yang ◽  
Melanie Pilkington ◽  
John D. Wallis ◽  
...  
Keyword(s):  
Steady State ◽  
Fluorescence Quenching ◽  
Radical Cation ◽  
High Efficiency ◽  
Chemical Oxidation ◽  
Reference Compound ◽  
Epr Spectrum ◽  
Hole Transfer ◽  
Time Resolved ◽  
Epr Measurements

A phosphorus(V) porphyrin bearing an axially linked bis(ethylenedithio)tetrathiafulvalene, dyad 1, and its radical cation phosphorus(V) porphyrin- O-CH2 -(bis(ethylenedithio)tetrathiafulvalene)+•, dyad 2, have been synthesized and studied as an electron hole donor-acceptor system. The absorption spectrum of dyad 1 does not show evidence for electronic coupling between the porphyrin and the bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) moieties. However, the steady-state fluorescence of the porphyrin chromophore is quantitatively quenched and its transient fluorescence lifetime is shortened compared to a reference compound in which the BEDT-TTF moiety is replaced by a methoxy group. Chemical oxidation of the BEDT-TTF moiety in dyad 1 to give dyad 2 results in recovery of the fluorescence intensity. This behavior suggests that the fluorescence quenching in dyad 1 is the result of intramolecular hole transfer from the the excited porphyrin to the BEDT-TTF moiety. The occurence of hole transfer in dyad 1 is confirmed by freeze-trapping and time-resolved electron paramagnetic resonance (EPR) measurements. The freeze-trapping EPR experiments show that steady-state irradiation of the complex leads to accumulation of its radical cation (dyad 2) while the transient EPR measurements at 5 °C show that flash irradiation of dyad 1 results in formation of a radical-ion pair with a lifetime of at least 300 ns. The triplet state of the porphyrin, which is formed by intersystem crossing and gives a strong transient EPR spectrum in the reference compound, is not observed for dyad 1. Together, the fluorescence quenching and the polarization pattern of the radical pair suggest that the hole transfer occurs from the excited singlet state of the porphyrin with high efficiency.

High-efficiency blue light-emitting electrophosphorescent device with conjugated polymers as the host

2006 ◽  
Vol 88 (5) ◽  
pp. 051116 ◽  
Author(s):  
Xiuju Zhang ◽  
Changyun Jiang ◽  
Yueqi Mo ◽  
Yunhua Xu ◽  
Huahong Shi ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Blue Light ◽  
High Efficiency ◽  
Light Emitting

scholarly journals Molecular Engineering in Hole Transport π‐Conjugated Polymers to Enable High Efficiency Colloidal Quantum Dot Solar Cells

2020 ◽  
Vol 10 (8) ◽  
pp. 1902933 ◽  
Author(s):  
Muhibullah Al Mubarok ◽  
Havid Aqoma ◽  
Febrian Tri Adhi Wibowo ◽  
Wooseop Lee ◽  
Hyung Min Kim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Conjugated Polymers ◽  
High Efficiency ◽  
Hole Transport ◽  
Molecular Engineering ◽  
Quantum Dot Solar Cells ◽  
Colloidal Quantum Dot
Sign in / Sign up

Export Citation Format

Share Document