Thiophene-based pyridine derivatives: synthesis, crystal structures, two-photon absorption properties and bio-imaging applications in the near-IR region

2016 ◽  
Vol 40 (10) ◽  
pp. 8809-8814 ◽  
Author(s):  
Shasha Xu ◽  
Yingzhong Zhu ◽  
Rui Li ◽  
Jian Su ◽  
Shengli Li ◽  
...  
Keyword(s):  
Cross Sections ◽  
High Stability ◽  
Photon Absorption ◽  
Pyridine Derivatives ◽  
Absorption Properties ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Near Ir ◽  
Bio Imaging ◽  
Low Cytotoxicity

Two novel D–π–A structural chromophores showing large 2PA active cross-sections, low cytotoxicity and high stability in near-IR bio-imaging.

scholarly journals Impact of the Subunit Arrangement on the Nonlinear Absorption Properties of Organometallic Complexes with Ruthenium(II) σ-Acetylide and Benzothiadiazole as Building Units §

Inorganics ◽  
2019 ◽  
Vol 7 (5) ◽  
pp. 67
Author(s):  
Eleonora Garoni ◽  
Alessia Colombo ◽  
Kenji Kamada ◽  
Claudia Dragonetti ◽  
Dominique Roberto
Keyword(s):  
Electron Acceptor ◽  
Cross Sections ◽  
Nonlinear Absorption ◽  
Organometallic Complexes ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Absorption Properties ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Resonance Enhancement

In this paper, the nonlinear absorption properties of two complexes consisting of Ru(C≡CPh)(C≡C)(dppe)2 (dppe = Ph2PCH2CH2PPh2) as electron donor (D) and 4,7-di(2-thienyl)benzo[c][1,2,5]thiadiazole as electron acceptor (A) units in two different arrangement, i.e., A–D–A and D–A–D, are presented. They were measured in solution by the femtosecond open-aperture Z-scan method. The complexes show moderate two-photon absorption cross-sections σ(2) of several hundred to one thousand GM (here 1 GM = 10−50 cm4 s molecule−1 photon−1). Although they are formed by the same building units, it was found that the two-photon absorption values of the D–A–D arrangement are six times higher than that of the A–D–A one. This difference can be explained by the number of metal cores (one or two ruthenium centers), the geometrical configurations of the complexes (more or less planar), and the resonance enhancement by lowering the intermediate state.

SUBSTITUENT EFFECT ON TWO-PHOTON ABSORPTION PROPERTIES OF FLUORENE DERIVATIVES

2004 ◽  
Vol 13 (03n04) ◽  
pp. 475-479 ◽  
Author(s):  
JUN KAWAMATA ◽  
MASAHARU AKIBA ◽  
YOSHIO INAGAKI ◽  
TAKEHARU TANI ◽  
AKINORI HARADA
Keyword(s):  
Cross Sections ◽  
Substituent Effect ◽  
Femtosecond Pulse ◽  
Substituent Effects ◽  
Photon Absorption ◽  
Absorption Properties ◽  
Two Photon Absorption ◽  
Ti:Sapphire Laser ◽  
Two Photon ◽  
The Relationship

Two novel fluorene derivatives having cationic substituents were synthesized. Two-photon absorption (TPA) properties of the derivatives were evaluated using the fluorescence-based technique with a femtosecond pulse emitted from a Ti:sapphire laser. Maximum TPA cross-sections of the compounds were estimated from the TPA spectra. Based on the results, the relationship between the TPA cross-sections and the substituent effects of the derivatives were discussed.

scholarly journals Facile synthesis and exploration of excited state assisted two-photon absorption properties of D–A–D type thiophene–pyridine derivatives

2020 ◽  
Vol 19 (5) ◽  
pp. 726-736
Author(s):  
Viprabha Kakekochi ◽  
Sathish Chatnahalli Gangadharappa ◽  
Nikhil P. P. ◽  
Chandrasekharan Keloth ◽  
Ezequiel Wolcan ◽  
...  
Keyword(s):  
Excited State ◽  
Conjugated Polymer ◽  
Photon Absorption ◽  
Pyridine Derivatives ◽  
Facile Synthesis ◽  
Absorption Properties ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Donor Acceptor ◽  
Limiting Threshold

Diagrammatic representation of excited state assisted two-photon absorption (2PA) behavior of a donor–acceptor type conjugated polymer (P2TPy) exhibiting an extremely low optical limiting threshold.

New zinc(ii) dyes with enhanced two-photon absorption cross sections based on the imidazolyl ligand

RSC Advances ◽  
2016 ◽  
Vol 6 (81) ◽  
pp. 77849-77853 ◽  
Author(s):  
Dan Liu ◽  
Na Zhang ◽  
Xinyu Zhang ◽  
Shuai Kong ◽  
Jianhua Yu ◽  
...  
Keyword(s):  
Cross Sections ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Type Compound ◽  
Bio Imaging

The effective TPA cross sections of Dyes 1–3 revealed that the exceeding TPA behavior may attributed to form the new D–π–A type compound that enhanced the intramolecular ICT progress. Dyes 1–3 were successfully applied in bio-imaging.

Theoretical study of one- and two-photon absorption properties of olefin-linked paracyclophane oligomers

2006 ◽  
Vol 84 (9) ◽  
pp. 1114-1123 ◽  
Author(s):  
Xiang-Biao Zhang ◽  
Ji-Kang Feng ◽  
Ai-Min Ren ◽  
Chia-Chung Sun
Keyword(s):  
Cross Sections ◽  
Molecular Structures ◽  
Photon Absorption ◽  
Absorption Properties ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Repeat Units ◽  
The One ◽  
Good Transparency ◽  
The Relationship

The electronic structures and the one- and two-photon absorption (TPA) properties of two series of the olefin-linked paracyclophane (pCp) oligomers have been studied using AM1 and ZINDO-SOS methods. The relationship between the TPA cross sections and the molecular chain length is obtained. The maximum TPA cross section increases in proportion to Nα (N denotes the number of repeat units) and the values of α depend on different molecular structures. The olefin-linked pCp oligomers, which have good transparency and large TPA cross sections, are promising candidates for TPA materials.Key words: two-photon properties, paracyclophane oligomer, AM1, ZINDO-SOS.

Two-photon absorption properties of BODIPY-like compounds based on BF2–naphthyridine complexes

2019 ◽  
Vol 21 (12) ◽  
pp. 6662-6671 ◽  
Author(s):  
Jessica Dipold ◽  
Eduardo E. Romero ◽  
Julie Donnelly ◽  
Tainara P. Calheiro ◽  
Helio G. Bonacorso ◽  
...  
Keyword(s):  
Cross Sections ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Absorption Properties ◽  
Two Photon Absorption ◽  
Two Photon

High two-photon absorption cross-sections of BODIPY-like compounds were obtained for simple structures.

Influence of the Metal Ion on the Two-Photon Absorption Properties of Lanthanide Complexes Including Near-IR Emitters

ChemPhysChem ◽  
2013 ◽  
Vol 14 (14) ◽  
pp. 3361-3367 ◽  
Author(s):  
Adrien Bourdolle ◽  
Mustapha Allali ◽  
Anthony D'Aléo ◽  
Patrice L. Baldeck ◽  
Kenji Kamada ◽  
...  
Keyword(s):  
Metal Ion ◽  
Lanthanide Complexes ◽  
Photon Absorption ◽  
Absorption Properties ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Near Ir

Theoretical Study of One- and Two-Photon Absorption Properties of Organic Conjugated Materials for Photovoltaic Devices

2008 ◽  
Author(s):  
Wei Wang ◽  
Zhong Hu ◽  
Vedbar Singh Khadka ◽  
Xingzhong Yan ◽  
Michael Ropp ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Cross Sections ◽  
Active Material ◽  
Low Energy ◽  
Photon Absorption ◽  
Absorption Properties ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Energy Incident ◽  
Three State Model

In the process of photovoltaic energy conversion, photons with the energy below the band-gap can not be absorbed and do not contribute to energy conversion. Frequency up-conversion describes the conversion of low energy incident photons towards higher energy photons via active materials. Two-photon absorption induced fluorescence is one of the approaches that convert low energy incident photons towards higher energy photons via active material. In this paper, quantum-chemical techniques were applied to theoretically investigate one- and two-photon absorption properties of some new molecules with “Λ” shape. Two-photon absorption cross sections of these derivatives were obtained using three-state model. Geometrical structure of molecule was optimized using Hartree-Fock Theory (HF) and properties of excited states of molecule were obtained based on Configuration Interaction with single excitations method (CIS).

Aggregation-Induced Emission and Large Two-Photon Absorption Cross-Sections of Diketopyrrolopyrrole (DPP) Derivatives

2012 ◽  
Vol 65 (4) ◽  
pp. 387 ◽  
Author(s):  
Bing Wang ◽  
Nannan He ◽  
Bo Li ◽  
Shuangying Jiang ◽  
Yi Qu ◽  
...  
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Photon Absorption ◽  
Attractive Alternative ◽  
Absorption Properties ◽  
Intramolecular Vibration ◽  
Symmetrical Structure ◽  
Aggregation Induced Emission ◽  
Two Photon Absorption ◽  
Two Photon

In this work, a new series of triphenylamine-based diketo-pyrrolo-pyrrole (DPP) compounds (DPP-I, DPP-II, DPP-III) have been designed and synthesized by a concise route. Their one- and two-photon absorption properties have been investigated. It was found that DPP-based compounds are very weakly fluorescent in THF solution, but their intensities are increased by almost 29, 9, and 24 times in water/THF (v/v 90 %) mixtures, respectively, in which they exhibit a strongly enhanced red fluorescence. The result indicates that the intramolecular vibration and rotation of these dyes is considerably restricted in nano-aggregates formed in water/THF mixtures, which leads to significant increases in fluorescence. The two-photon absorption (2PA) cross-sections measured by the open aperture Z-scan technique were determined to be 188, 275 and 447 GM for DPP-I, DPP-II, and DPP-III, respectively; DPP-III with the symmetrical structure shows the highest value of 2PA cross-section. The excellent properties of aggregation-induced emission (AIE) and 2PA provide an attractive alternative for the biophotonic materials.

THEORETICAL STUDIES OF ONE- AND TWO-PHOTON ABSORPTION PROPERTIES FOR SYMMETRIC MOLECULES BASED ON BIS(STILBENE)DIETHYLENE

2006 ◽  
Vol 05 (03) ◽  
pp. 535-542 ◽  
Author(s):  
SHU-LAN ZHOU ◽  
XIAN ZHAO ◽  
XUE-QIN SUN ◽  
XIU-FENG CHENG
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Dipole Moments ◽  
Photon Absorption ◽  
Absorption Properties ◽  
Final State ◽  
Transition Dipole ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Acceptor Side

In order to investigate the substituting effects on the two-photon absorption (TPA) cross-section and the position of the TPA peak, the one- and two-photon absorption properties of a series of symmetric molecules with bis(stilbene)diethylene π-conjugated bridge have been studied using ZINDO-SOS method. The transition moments from the ground state to the lowest excited state (M0k) and from the lowest excited state to the TPA final state (Mkn), together with the detuning energy ΔE = E0k - Ekn/2, were calculated using the INDO1 method included in the ZINDO program. The results indicate that bis-donor and bis-acceptor substitutions mainly affect the transition dipole moments M0k and Mkn, and that donor or acceptor side groups have a strong influence on the detuning energy. Meanwhile, it was found that the molecules with the bis-donor structure possess enhanced TPA cross sections, and the molecules with cyano or methoxy side groups have a large red-shift with respect to molecules without side groups.

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