1
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Jiang Y, Chen H, Men X, Sun Z, Yuan Z, Zhang X, Chiu DT, Wu C, McNeill J. Multimode Time-Resolved Superresolution Microscopy Revealing Chain Packing and Anisotropic Single Carrier Transport in Conjugated Polymer Nanowires. NANO LETTERS 2021; 21:4255-4261. [PMID: 33733782 DOI: 10.1021/acs.nanolett.1c00405] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Here, we developed a novel, multimode superresolution method to perform full-scale structural mapping and measure the energy landscape for single carrier transport along conjugated polymer nanowires. Through quenching of the local emission, the motion of a single photogenerated hole was tracked using blinking-assisted localization microscopy. Then, utilizing binding and unbinding dynamics of quenchers onto the nanowires, local emission spectra were collected sequentially and assembled to create a superresolution map of emission sites throughout the structure. The hole polaron trajectories were overlaid with the superresolution maps to correlate structures with charge transport properties. Using this method, we compared the efficiency of inter- and intrachain hole transport inside the nanowires and for the first time directly measured the depth of carrier traps originated from torsional disorder and chemical defects.
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Affiliation(s)
- Yifei Jiang
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Haobin Chen
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Xiaoju Men
- Faculty of Health Science, University of Macau, Taipa 999078, Macau
| | - Zezhou Sun
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Zhen Yuan
- Faculty of Health Science, University of Macau, Taipa 999078, Macau
| | - Xuanjun Zhang
- Faculty of Health Science, University of Macau, Taipa 999078, Macau
| | - Daniel T Chiu
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Changfeng Wu
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Jason McNeill
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
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2
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Ghosh A, Ghosh S, Ghosh G, Patra A. Implications of relaxation dynamics of collapsed conjugated polymeric nanoparticles for light-harvesting applications. Phys Chem Chem Phys 2021; 23:14549-14563. [DOI: 10.1039/d1cp01618k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The mechanism of the formation of nanoparticles (collapsed state) from the extended state of polymers and their ultrafast excited state relaxation dynamics are illustrated.
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Affiliation(s)
- Arnab Ghosh
- School of Materials Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700032
- India
| | - Srijon Ghosh
- School of Materials Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700032
- India
| | - Goutam Ghosh
- School of Materials Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700032
- India
| | - Amitava Patra
- School of Materials Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700032
- India
- Institute of Nano Science and Technology
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3
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Nelson TR, White AJ, Bjorgaard JA, Sifain AE, Zhang Y, Nebgen B, Fernandez-Alberti S, Mozyrsky D, Roitberg AE, Tretiak S. Non-adiabatic Excited-State Molecular Dynamics: Theory and Applications for Modeling Photophysics in Extended Molecular Materials. Chem Rev 2020; 120:2215-2287. [PMID: 32040312 DOI: 10.1021/acs.chemrev.9b00447] [Citation(s) in RCA: 213] [Impact Index Per Article: 53.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Optically active molecular materials, such as organic conjugated polymers and biological systems, are characterized by strong coupling between electronic and vibrational degrees of freedom. Typically, simulations must go beyond the Born-Oppenheimer approximation to account for non-adiabatic coupling between excited states. Indeed, non-adiabatic dynamics is commonly associated with exciton dynamics and photophysics involving charge and energy transfer, as well as exciton dissociation and charge recombination. Understanding the photoinduced dynamics in such materials is vital to providing an accurate description of exciton formation, evolution, and decay. This interdisciplinary field has matured significantly over the past decades. Formulation of new theoretical frameworks, development of more efficient and accurate computational algorithms, and evolution of high-performance computer hardware has extended these simulations to very large molecular systems with hundreds of atoms, including numerous studies of organic semiconductors and biomolecules. In this Review, we will describe recent theoretical advances including treatment of electronic decoherence in surface-hopping methods, the role of solvent effects, trivial unavoided crossings, analysis of data based on transition densities, and efficient computational implementations of these numerical methods. We also emphasize newly developed semiclassical approaches, based on the Gaussian approximation, which retain phase and width information to account for significant decoherence and interference effects while maintaining the high efficiency of surface-hopping approaches. The above developments have been employed to successfully describe photophysics in a variety of molecular materials.
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Affiliation(s)
- Tammie R Nelson
- Theoretical Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Alexander J White
- Theoretical Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Josiah A Bjorgaard
- Theoretical Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Andrew E Sifain
- Theoretical Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States.,U.S. Army Research Laboratory , Aberdeen Proving Ground , Maryland 21005 , United States
| | - Yu Zhang
- Theoretical Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Benjamin Nebgen
- Theoretical Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | | | - Dmitry Mozyrsky
- Theoretical Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Adrian E Roitberg
- Department of Chemistry , University of Florida , Gainesville , Florida 32611 , United States
| | - Sergei Tretiak
- Theoretical Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
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4
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Hedley GJ, Steiner F, Vogelsang J, Lupton JM. Fluctuations in the Emission Polarization and Spectrum in Single Chains of a Common Conjugated Polymer for Organic Photovoltaics. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1804312. [PMID: 30444577 DOI: 10.1002/smll.201804312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Indexed: 06/09/2023]
Abstract
Measuring the nanoscale organization of conjugated polymer chains used in organic photovoltaic (OPV) blends is vital if one wants to understand the materials. This is made very difficult with high efficiency OPV polymers such as PTB7 that form aggregates, as a lack of periodicity and a high degree of disorder make understanding of the nanoscale organization challenging. Here, single molecule spectroscopy is used to observe single chains and aggregates of PTB7. Using four detectors the photoluminescence intensity, wavelength, polarization, and lifetime are simultaneously monitored. Fast (milliseconds) and slow (seconds) fluctuations are observed over a time window of 30 s in all of these observables from single aggregates and chains as individual chromophores activate and deactivate, leading to dynamical changes in the emission spectrum and dipole orientation. This information can be used to help reconstruct the spatial and spectral organization of disordered aggregates of PTB7, thereby adding valuable new information on how the chains are arranged in space.
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Affiliation(s)
- Gordon J Hedley
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
- Institut für Experimentelle und Angewandte Physik, Universität Regensburg, D-93040, Regensburg, Germany
| | - Florian Steiner
- Institut für Experimentelle und Angewandte Physik, Universität Regensburg, D-93040, Regensburg, Germany
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, D-81377, München, Germany
| | - Jan Vogelsang
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, D-81377, München, Germany
| | - John M Lupton
- Institut für Experimentelle und Angewandte Physik, Universität Regensburg, D-93040, Regensburg, Germany
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5
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Coceancigh H, Higgins DA, Ito T. Optical Microscopic Techniques for Synthetic Polymer Characterization. Anal Chem 2018; 91:405-424. [PMID: 30350610 DOI: 10.1021/acs.analchem.8b04694] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Herman Coceancigh
- Department of Chemistry , Kansas State University , 213 CBC Building , Manhattan , Kansas 66506-0401 , United States
| | - Daniel A Higgins
- Department of Chemistry , Kansas State University , 213 CBC Building , Manhattan , Kansas 66506-0401 , United States
| | - Takashi Ito
- Department of Chemistry , Kansas State University , 213 CBC Building , Manhattan , Kansas 66506-0401 , United States
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6
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Hestand NJ, Spano FC. Expanded Theory of H- and J-Molecular Aggregates: The Effects of Vibronic Coupling and Intermolecular Charge Transfer. Chem Rev 2018; 118:7069-7163. [PMID: 29664617 DOI: 10.1021/acs.chemrev.7b00581] [Citation(s) in RCA: 727] [Impact Index Per Article: 121.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The electronic excited states of molecular aggregates and their photophysical signatures have long fascinated spectroscopists and theoreticians alike since the advent of Frenkel exciton theory almost 90 years ago. The influence of molecular packing on basic optical probes like absorption and photoluminescence was originally worked out by Kasha for aggregates dominated by Coulombic intermolecular interactions, eventually leading to the classification of J- and H-aggregates. This review outlines advances made in understanding the relationship between aggregate structure and photophysics when vibronic coupling and intermolecular charge transfer are incorporated. An assortment of packing geometries is considered from the humble molecular dimer to more exotic structures including linear and bent aggregates, two-dimensional herringbone and "HJ" aggregates, and chiral aggregates. The interplay between long-range Coulomb coupling and short-range charge-transfer-mediated coupling strongly depends on the aggregate architecture leading to a wide array of photophysical behaviors.
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Affiliation(s)
- Nicholas J Hestand
- Department of Chemistry , Temple University , Philadelphia , Pennsylvania 19122 , United States
| | - Frank C Spano
- Department of Chemistry , Temple University , Philadelphia , Pennsylvania 19122 , United States
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7
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Hu Z, Shao B, Geberth GT, Vanden Bout DA. Effects of molecular architecture on morphology and photophysics in conjugated polymers: from single molecules to bulk. Chem Sci 2018; 9:1101-1111. [PMID: 29675155 PMCID: PMC5887865 DOI: 10.1039/c7sc03465b] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 12/30/2017] [Indexed: 01/16/2023] Open
Abstract
A definitive comprehension of morphology and photophysics in conjugated polymers at multiple length scales demands both single molecule spectroscopy and well-controlled molecular architectures.
Conjugated polymers (CPs) possess a wide range of desirable properties, including accessible energetic bandgaps, synthetic versatility, and mechanical flexibility, which make them attractive for flexible and wearable optoelectronic devices. An accurate and comprehensive understanding about the morphology–photophysics relations in CPs lays the groundwork for their development in these applications. However, due to the complex roles of chemical structure, side-chains, backbone, and intramolecular interactions, CPs can exhibit heterogeneity in both their morphology and optoelectronic properties even at the single chain level. This molecular level heterogeneity together with complicated intermolecular interactions found in bulk CP materials severely obscures the deterministic information about the morphology and photophysics at different hierarchy levels. To counter this complexity and offer a clearer picture for the properties of CP materials, we highlight the approach of probing material systems with specific structural features via single molecule/aggregate spectroscopy (SMS). This review article covers recent advances achieved through such an approach regarding the important morphological and photophysical properties of CPs. After a brief review of the typical characteristics of CPs, we present detailed discussions of structurally well-defined model systems of CPs, from manipulated backbones and side-chains, up to nano-aggregates, studied with SMS to offer deterministic relations between morphology and photophysics from single chains building up to bulk states.
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Affiliation(s)
- Zhongjian Hu
- Department of Chemistry , University of Texas at Austin , USA .
| | - Beiyue Shao
- Department of Chemistry , University of Texas at Austin , USA .
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8
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Pham PTT, Young VG, Bader MM. The impact of vinylene bridges and side chain alkyl groups on the solid state structures of tricyanovinyl-substituted thiophenes. CrystEngComm 2018. [DOI: 10.1039/c7ce01574g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The goal of this work is to examine the solid state structures of compounds that have been designed for increased conjugation and solubility, as these factors are important if these compounds are to be used in the solid state.
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Affiliation(s)
| | - Victor G. Young
- Department of Chemistry
- University of Minnesota
- Minneapolis
- USA
| | - Mamoun M. Bader
- Department of Chemistry
- Alfaisal University
- Riyadh 11533
- Saudi Arabia
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9
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Wu EC, Stubbs RE, Peteanu LA, Jemison R, McCullough RD, Wildeman J. Detection of Ultralow Concentrations of Non-emissive Conjugated Polymer Aggregates via Fluorescence Correlation Spectroscopy. J Phys Chem B 2017; 121:5413-5421. [DOI: 10.1021/acs.jpcb.7b01918] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eric C. Wu
- Department
of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Regan E. Stubbs
- Department
of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Linda A. Peteanu
- Department
of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Racquel Jemison
- Department
of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Richard D. McCullough
- Department
of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Jurjen Wildeman
- Zernike Institute of Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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10
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Peteanu LA, Chowdhury S, Wildeman J, Sfeir MY. Exciton–Exciton Annihilation as a Probe of Interchain Interactions in PPV–Oligomer Aggregates. J Phys Chem B 2017; 121:1707-1714. [DOI: 10.1021/acs.jpcb.6b11250] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Linda A. Peteanu
- Department
of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Sanchari Chowdhury
- Department
of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Jurjen Wildeman
- Zernike Institute of Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Matthew Y. Sfeir
- Center
for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
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11
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Panzer F, Bässler H, Köhler A. Temperature Induced Order-Disorder Transition in Solutions of Conjugated Polymers Probed by Optical Spectroscopy. J Phys Chem Lett 2017; 8:114-125. [PMID: 27966973 DOI: 10.1021/acs.jpclett.6b01641] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The aggregation of π-conjugated materials significantly impacts the photophysics and performance of optoelectronic devices. Nevertheless, little is known about the laws governing aggregate formation of π-conjugated materials from solution. In this Perspective, we compare, discuss, and summarize how aggregates form for three different types of compounds, that is, homopolymers, donor-acceptor type polymers, and low molecular weight compounds. To this end, we employ temperature-dependent optical spectroscopy, which is a simple yet powerful tool to investigate aggregate formation. We show how optical spectra can be analyzed to identify distinct conformational states. We find aggregate formation to proceed the same in all these compounds by a coil-to-globule-like first-order phase transition. Notably, the chain expands before it collapses into a highly ordered dense state. The role of side chains and the impact of changes in environmental polarization are addressed.
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Affiliation(s)
- Fabian Panzer
- Experimental Physics II, ‡Department of Functional Materials, and §Bayreuth Institute of Macromolecular Research (BIMF), University of Bayreuth , 95540 Bayreuth, Germany
| | - Heinz Bässler
- Experimental Physics II, ‡Department of Functional Materials, and §Bayreuth Institute of Macromolecular Research (BIMF), University of Bayreuth , 95540 Bayreuth, Germany
| | - Anna Köhler
- Experimental Physics II, ‡Department of Functional Materials, and §Bayreuth Institute of Macromolecular Research (BIMF), University of Bayreuth , 95540 Bayreuth, Germany
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12
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Hu Y, Wang CW, Zhu C, Gu F, Lin SH. Franck–Condon simulation for unraveling vibronic origin in solvent enhanced absorption and fluorescence spectra of rubrene. RSC Adv 2017. [DOI: 10.1039/c7ra00417f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The damped FC method shows how and which local modes are responsible to solvent enhance vibronic spectra.
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Affiliation(s)
- Ying Hu
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- School of Chemistry & Environment
- South China Normal University
- Guangzhou 510006
| | - Chen-Wen Wang
- Department of Applied Chemistry
- Institute of Molecular Science and Center for Interdisciplinary Molecular Science
- National Chiao-Tung University
- Hsinchu 30050
- Taiwan
| | - Chaoyuan Zhu
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- School of Chemistry & Environment
- South China Normal University
- Guangzhou 510006
| | - Fenglong Gu
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- School of Chemistry & Environment
- South China Normal University
- Guangzhou 510006
| | - Sheng-Hsien Lin
- Department of Applied Chemistry
- Institute of Molecular Science and Center for Interdisciplinary Molecular Science
- National Chiao-Tung University
- Hsinchu 30050
- Taiwan
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13
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Zhu X, Shao B, Vanden Bout DA, Plunkett KN. Directing the Conformation of Oligo(phenylenevinylene) Polychromophores with Rigid, Nonconjugatable Morphons. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00067] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Xinju Zhu
- Department
of Chemistry and Biochemistry and the Materials Technology Center, Southern Illinois University, Carbondale, Illinois 62901, United States
| | - Beiyue Shao
- Center
for Nano- and Molecular Science and Technology, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - David A. Vanden Bout
- Center
for Nano- and Molecular Science and Technology, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Kyle N. Plunkett
- Department
of Chemistry and Biochemistry and the Materials Technology Center, Southern Illinois University, Carbondale, Illinois 62901, United States
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14
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Roy P, Jha A, Dasgupta J. Photoinduced charge generation rates in soluble P3HT : PCBM nano-aggregates predict the solvent-dependent film morphology. NANOSCALE 2016; 8:2768-2777. [PMID: 26763690 DOI: 10.1039/c5nr06445g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The device efficiency of bulk heterojunction (BHJ) solar cells is critically dependent on the nano-morphology of the solution-processed polymer : fullerene blend. Active control on blend morphology can only emanate from a detailed understanding of solution structures during the film casting process. Here we use photoinduced charge transfer (CT) rates to probe the effective length scale of the pre-formed solution structures and their energy disorder arising from a mixture of poly(3-hexylthiophene-2,5-diyl) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) in three different organic solvents. The observed solvent-dependent ultrafast biphasic rise of the transient polaron state in solution along with changes detected in the C=C stretching frequency of bound PCBM provides direct evidence for film-like P3HT : PCBM interfaces in solution. Using the diffusive component of the charge transfer rate, we deduce ∼3-times larger functional nano-domain size in toluene than in chlorobenzene thereby correctly predicting the relative polymer nanofiber widths observed in annealed films. We thus provide first experimental evidence for the postulated polymer : fullerene : solvent ternary phase that seeds the eventual morphology in spin-cast films. Our work motivates the design of new chemical additives to tune the grain size of the evolving polymer : fullerene domains within the solution phase.
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Affiliation(s)
- Palas Roy
- Department of Chemical Sciences, 1 Homi Bhabha Road, Tata Institute of Fundamental Research, Mumbai 400005, India.
| | - Ajay Jha
- Department of Chemical Sciences, 1 Homi Bhabha Road, Tata Institute of Fundamental Research, Mumbai 400005, India.
| | - Jyotishman Dasgupta
- Department of Chemical Sciences, 1 Homi Bhabha Road, Tata Institute of Fundamental Research, Mumbai 400005, India.
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15
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Abdul Rahim NA, Fujiki M. Aggregation-induced scaffolding: photoscissable helical polysilane generates circularly polarized luminescent polyfluorene. Polym Chem 2016. [DOI: 10.1039/c6py00595k] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An enantiopair of rigid rod-like helical polysilanes as a photoscissible scaffold allowed the production of CPL- and CD-active dioctylpolyfluorene aggregates associated with complete removal by a polysilane-selective photoscissoring reaction at 313 nm.
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Affiliation(s)
- Nor Azura Abdul Rahim
- Graduate School of Materials Science
- Nara Institute of Science and Technology
- Ikoma
- Japan
- School of Materials Engineering
| | - Michiya Fujiki
- Graduate School of Materials Science
- Nara Institute of Science and Technology
- Ikoma
- Japan
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16
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Scharsich C, Fischer FSU, Wilma K, Hildner R, Ludwigs S, Köhler A. Revealing structure formation in PCPDTBT by optical spectroscopy. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/polb.23780] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Christina Scharsich
- Bayreuth Institute of Macromolecular Research (BIMF), University of Bayreuth; Bayreuth 95440 Germany
- Experimental Physics II, University of Bayreuth; Bayreuth 95440 Germany
| | | | - Kevin Wilma
- Bayreuth Institute of Macromolecular Research (BIMF), University of Bayreuth; Bayreuth 95440 Germany
- Experimental Physics IV, University of Bayreuth; Bayreuth 95440 Germany
| | - Richard Hildner
- Bayreuth Institute of Macromolecular Research (BIMF), University of Bayreuth; Bayreuth 95440 Germany
- Experimental Physics IV, University of Bayreuth; Bayreuth 95440 Germany
| | - Sabine Ludwigs
- IPOC-Functional Polymers, University of Stuttgart; Stuttgart 70569 Germany
| | - Anna Köhler
- Bayreuth Institute of Macromolecular Research (BIMF), University of Bayreuth; Bayreuth 95440 Germany
- Experimental Physics II, University of Bayreuth; Bayreuth 95440 Germany
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17
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Wang CW, Yang L, Zhu C, Yu JG, Lin SH. Franck-Condon factors perturbed by damped harmonic oscillators: Solvent enhanced X 1Ag ↔ A1B1u absorption and fluorescence spectra of perylene. J Chem Phys 2014; 141:084106. [DOI: 10.1063/1.4893529] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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18
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Kasiouli S, Di Stasio F, McDonnell SO, Constantinides CP, Anderson HL, Cacialli F, Hayes SC. Resonance Raman Investigation of β-Cyclodextrin-Encapsulated π-Conjugated Polymers. J Phys Chem B 2013; 117:5737-47. [DOI: 10.1021/jp400732h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Soulianna Kasiouli
- Department
of Chemistry, University of Cyprus, P.O.
Box 20537, 1678 Nicosia,
Cyprus
| | - Francesco Di Stasio
- Department of Physics
and Astronomy, University College London, Gower Street, London WC1E
6BT, U.K
| | - Shane O. McDonnell
- Chemistry Research
Laboratory,
Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | | | - Harry L. Anderson
- Chemistry Research
Laboratory,
Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Franco Cacialli
- Department of Physics
and Astronomy, University College London, Gower Street, London WC1E
6BT, U.K
| | - Sophia C. Hayes
- Department
of Chemistry, University of Cyprus, P.O.
Box 20537, 1678 Nicosia,
Cyprus
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19
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Norris BN, Zhang S, Campbell CM, Auletta JT, Calvo-Marzal P, Hutchison GR, Meyer TY. Sequence Matters: Modulating Electronic and Optical Properties of Conjugated Oligomers via Tailored Sequence. Macromolecules 2013. [DOI: 10.1021/ma400123r] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Benjamin N. Norris
- Department
of Chemistry, Frostburg State University, 101 Braddock Road, Frostburg,
Maryland 21532, United States
| | - Shaopeng Zhang
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh,
Pennsylvania 15260, United States
| | - Casey M. Campbell
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive,
Atlanta, Georgia 30332-0400, United States
| | - Jeffrey T. Auletta
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh,
Pennsylvania 15260, United States
| | - Percy Calvo-Marzal
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh,
Pennsylvania 15260, United States
| | - Geoffrey R. Hutchison
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh,
Pennsylvania 15260, United States
| | - Tara Y. Meyer
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh,
Pennsylvania 15260, United States
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