Abstract: A metal complex having at least one chelating N-heterocyclic carbene ligand. The metal complex provides a blue emission. This is useful for organic light emitting diode (OLED) components where blue emitters have trailed behind the advances of red and green emitters.

Abstract: A metal carbene complex for organic light emitting diodes (OLEDs) includes a ligand L having Formula (I). The metal carbene complex can be used in organic emitting diodes.

Abstract: This invention relates to an iridium metal complex. The iridium metal complex comprises no more than three 1,3-dihydro-2H-benzo[d]imidazol-2-ylidene based carbene cyclometalate ligands. The iridium metal complex provides a blue emission. This is useful for organic light emitting diode (OLED) components where blue emitters have trailed behind the advances 5 of red and green emitters.

Abstract: Technology is disclosed for transferring money anonymously between a sender and a recipient by use of a one-time use token. The method includes generating a one-time use token account for association with a one-time use token. The method includes generating the token and providing the token to the sender device in a machine-readable and transferable format. The method includes receiving a request to charge the one-time use token account after the token has been provided to the recipient device as a form of payment for a transaction. The method includes determining that an amount of the transaction is less than an amount of funds associated with the token and that the time of the transaction is within a time period for the use of the token. The method includes facilitating a transfer to the recipient account and deducting the amount of the transaction from a sender account.

Abstract: This invention relates to an iridium metal complex. The iridium metal complex comprises no more than three 1,3-dihydro-2H-benzo[d]imidazol-2-ylidene based carbene cyclometalate ligands. The iridium metal complex provides a blue emission. This is useful for organic light emitting diode (OLED) components where blue emitters have trailed behind the advances of red and green emitters.

Abstract: This invention relates to an iridium metal complex. The iridium metal complex comprises no more than three 1,3-dihydro-2H-benzo[d]imidazol-2-ylidene based carbene cyclometalate ligands. The iridium metal complex provides a blue emission. This is useful for organic light emitting diode (OLED) components where blue emitters have trailed behind the advances of red and green emitters.

Abstract: A metal complex having at least one chelating N-heterocyclic carbene ligand. The metal complex provides a blue emission. This is useful for organic light emitting diode (OLED) components where blue emitters have trailed behind the advances of red and green emitters.

Abstract: A metal complex having at least one N-heterocyclic carbene ligand. The metal complex provides a blue emission. This is useful for organic light emitting diode (OLED) components where blue emitters have trailed behind the advances of red and green emitters.

Abstract: Technology is disclosed for transferring money anonymously between a sender and a recipient by use of a one-time use token. The method includes generating a one-time use token account for association with a one-time use token. The method includes generating the token and providing the token to the sender device in a machine-readable and transferable format. The method includes receiving a request to charge the one-time use token account after the token has been provided to the recipient device as a form of payment for a transaction. The method includes determining that an amount of the transaction is less than an amount of funds associated with the token and that the time of the transaction is within a time period for the use of the token. The method includes facilitating a transfer to the recipient account and deducting the amount of the transaction from a sender account.

Abstract: In an embodiment, a method performed by a payment service system (PSS) includes receiving from a first payment application associated with the PSS, a request to generate a token. The method includes identifying account information associated with the recipient. The method includes generating an anonymizing token associated with the recipient. The method includes storing an association between the account information of the recipient and the anonymizing token. The method includes providing for display of the anonymizing token within the first payment application. The anonymizing token anonymously embeds recipient information and the account information of the recipient.

Abstract: Provided is a platinum complex having a structure represented by formula (I): wherein A1 to A3 each independently represent a 5-membered or 6-membered unsaturated ring, A3 is optionally formed between A1 and A2; X1, X2, and X3 each independently represent carbon or nitrogen; R1 represents hydrogen, substituted or unsubstituted C1-C6 alkyl, —CF2H, —CFH2, substituted or unsubstituted C6-C12 aryl or —CmF2m+1, m is an integer of 1 to 5; R2 and R3 each independently represent hydrogen, C1-C12 alkyl, substituted or unsubstituted C1-C6 alkoxyl, substituted or unsubstituted C6-C12 aryl, or —CnF2n+1, n is an integer of 0 to 3; p and q each independently represent an integer of 1 to 2; and when p or q is equal to 2, two R2's or R3's may join to form a C3-C8 aromatic or nitrogen-containing heteroaromatic ring.

Abstract: Provided is a platinum complex having a structure represented by formula (I): wherein A1 to A3 each independently represent a 5-membered or 6-membered unsaturated ring, A3 is optionally formed between A1 and A2; X1, X2, and X3 each independently represent carbon or nitrogen; R1 represents hydrogen, substituted or unsubstituted C1-C6 alkyl, —CF2H, —CFH2, substituted or unsubstituted C6-C12 aryl or —CmF2m+1, m is an integer of 1 to 5; R2 and R3 each independently represent hydrogen, C1-C12 alkyl, substituted or unsubstituted C1-C6 alkoxyl, substituted or unsubstituted C6-C12 aryl, or —CnF2n+1, n is an integer of 0 to 3; p and q each independently represent an integer of 1 to 2; and when p or q is equal to 2, two R2's or R3's may join to form a C3-C8 aromatic or nitrogen-containing heteroaromatic ring.

Abstract: An iridium complex has the structure: wherein X? and X? independently represent carbon or nitrogen; X1, X2, X3, and X4 independently represent carbon or nitrogen; R1 and R5 independently represent substituted or unsubstituted C1-C12 alkyl; R2, R3, and R4 independently represent hydrogen, C1-C12 alkyl, substituted or unsubstituted C6-C12 aryl, or —CmF2m+1, m is from 1 to 3; each of m and n is from 1 to 3; A1 and A2 independently represent an unsaturated 5-membered or 6-membered ring; B is —O—, —NR— or —CR2—, A2 may join with —NR— or —CR2— to form a C9-C14 N-heteroaromatic or aromatic ring; b is 0 or 1; R6 is hydrogen, fluorine, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C1-C6 alkoxyl, substituted or unsubstituted C6-C12 aryl, substituted or unsubstituted C1-C6 amino, or —CxF2x+1, x is from 1 to 3; and p is from 1 to 3.

Abstract: Technology is disclosed for transferring money anonymously between a sender and a recipient by use of a token. In some embodiments, the disclosed technology involves communication between a mobile payment application (“App”) and a payment service system (PSS). Upon the recipient's request, the App, installed on the recipient's device, generates the token, and provides the token to both the recipient and the PSS. The PSS receives both the token and the recipient's identification information from the App, associates the token with the identification information, and stores such association. The recipient, on the other hand, transfers the token to the sender, who forwards it to the PSS to request a money transfer. The PSS receives the token and identifies the recipient's identification information based on the previously stored association with the token. With the identification information, the PSS determines the recipient's financial account to execute the money transfer.

Abstract: A platinum complex, an OLED and an apparatus for providing visible emission or near-infrared (NIR) emission using the same are described. The platinum complex has a structure represented by formula (I): wherein A1 to A4 each independently represent a 5-membered or 6-membered unsaturated ring, a first chelating ligand including A1 and A4 fragments has a minus one formal charge, and a second chelating ligand including A2 and A3 fragments has a minus one formal charge.

Abstract: An iridium complex and an OLED using the same are provided. The iridium complex is represented by general formula (I). In the general formula (I), A1, A2, A3, A4 and A5 are each independently a 5-membered unsaturated ring or a 6-membered unsaturated ring.

Abstract: A platinum complex having at least one carbene fragment, and an OLED using the same are described. The platinum complex contains a platinum cation, a zero-valent nitrogen-containing heterocyclic bidentate chelate, and a dianionic nitrogen-containing heterocyclic bidentate chelate. The zero-valent nitrogen-containing heterocyclic bidentate chelate has at least one carbene unit coordinating to platinum. The dianionic nitrogen-containing heterocyclic bidentate chelate has at least one electron-withdrawing substituent, and forms two N—Pt bonds, or one N—Pt bond and one C—Pt bond, with the central platinum cation.

Abstract: An iridium complex and an OLED using the same are shown. The iridium complex is represented by formula (I), wherein R1 is substituted or unsubstituted C1-12 alkyl, or substituted or unsubstituted C6-12 aryl; R2 is hydrogen, fluorine or —CmF2m+1 (m=1, 2 or 3), substituted or unsubstituted C1-12 alkyl, or substituted or unsubstituted C6-12 aryl; R3 is hydrogen, fluorine or —CmF2m+1 (m=1, 2 or 3), substituted or unsubstituted C1-6 alkyl or alkoxy, and n is 1, 2, 3 or 4; each of R4 is hydrogen or substituted or unsubstituted C1-12 alkyl, or R4's may join to form a C3-8 aromatic ring, and R4's may be the same or different; X1, X2, X3 and X4 are each independently CH or nitrogen; Y1, Y2 and Y3 are each independently carbon or nitrogen, with a proviso that at least one of Y1, Y2 and Y3 is nitrogen, and the tridentate chelate Y1^Y2^Y3 is dianionic.

Abstract: Techniques and arrangements for managing risk of fraudulent transactions made by a point-of-sale (POS) device operating in an online and an offline mode. In some instances, a payment service may maintain a merchant profile with a list of merchant specific criteria. The payment service may encrypt and send the merchant specific criteria to the POS device associated with the merchant. The encrypted data may include a list of payment instruments used in previous successful transactions, customer transaction histories, and other customer information. The POS device may determine, upon receiving a payment instrument identifier in a transaction, whether the payment instrument has been used in a previous successful transaction. If the POS device determines the payment instrument has been used, it may process the transaction. If not, the POS device may warn the merchant that the transaction is a high-risk transaction.

Abstract: An iridium complex and an OLED using the same are provided. The iridium complex is represented by general formula (I). In the general formula (I), A1, A2, A3, A4 and A5 are each independently a 5-membered unsaturated ring or a 6-membered unsaturated ring.